Cirsotrema togatum
(Hertlein & Strong, 1951)
Description:
Dimensions range from 15 mm - 37.5 mm high and 6 mm - 13.8 mm wide.
Width to height ratio: 0.4:1 ~ 0.37:1
Shell: slender, turrited; small to moderately small. About 13.5 whorls; protoconch with ~1.5 whorls early sculpture, somewhat glassy; teleoconch with 11-12 whorls upper whorls with the sculpture much worn. Suture very deep. Imperforate: lacking. Approximately 20 costae on the body whorl. Costae are the reflected faces of the varices with close, waved, axial striae, expansion of the ribs to join the expansions of the neighboring ribs, leaving small openings through which the regular shell surface may be seen; lamination of the ribs extends above and below to give a third dimensional quality to the intricate sculpture; every fourth, fifth or sixth costae is swollen to form a strong varix. Costae aligned; coronated shoulder with 3 or more sharp, waved, axial laminae, the points of which correspond to the spiral cords, and in some cases span the interspaces between the axial ribs; strongly reflected; continuous from suture to suture. Intercostal spaces with cords; the reflected faces of the varices with close, waved, axial striae. Interstices with approximately 7 spiral striae per whorl. Base with a strong spiral cord forming a narrow basal disk. Aperture circular, lip lip slightly patulous, crenulated, thickened by the last rib. Operculum dark and paucispiral.
Distribution:
Guaymas, Sonora, Mexico, to Costa Rica and the Galápagos (DuShane 1974: 48)
Habitat:
32-113 m [DuShane, 1974:48], sand [Hertlein & Strong, 1951:89]
Etymology:
Unable to determine
Type Material:
Holotype: CAS[GTC] 9620 for Cirsotrema togatum (Hertlein & Strong, 1951) - Type Locality: Station 150-D-19, Gorda Banks, Gulf of California, 23o 01' 00''N, 109o 27' 30''W, dredged in 50 fms (91 m), sand.. [Brown, L. & Neville, B.D., 2015]
Holotype: for Cirsotrema togatum (Hertlein & Strong, 1951) - Type Locality: Station 150-D-19, Lat. 23° 0' 00, N., Long. 109° 27 30 W., Gorda Banks, Gulf of California, dredged in 50 fathoms (91 meters). Length, 37.5 mm.; maximum diameter (including the varices), 13.8 mm. P. 89.. [Hertlein L.G. & Strong A.M., 1951]
Hertlein L.G. & Strong A.M. (1951). Plate III. Fig. 1.
Epitonium
(Cursotrema) togatum
Hertlein & Strong, sp. nov. Holotype, from Station 150-D-19, Lat. 23° 01' 00" N., Long. 109° 27' 30" W., Gorda Banks, Gulf of California, dredged in 50 fathoms (91 meters).
Length, 37.5 mm.; maximum diameter (including the varices), 13.8 mm.
Distribution
as listed in source literature
Hertlein L.G. & Strong A.M. (1951).
Plate III. Fig. 1.
Epitonium
(Cursotrema) togatum
Hertlein & Strong, sp. nov. Holotype, from Station 150-D-19, Lat. 23° 01' 00" N., Long. 109° 27' 30" W., Gorda Banks, Gulf of California, dredged in 50 fathoms (91 meters).
Length, 37.5 mm.; maximum diameter (including the varices), 13.8 mm.
Plate III. Fig. 5.
Epitonium
( Cirsotrema) togatum
Hertlein & Strong, sp. nov. Paratype, from Station 214-D-1-4, Lat. 9° 19' 32" to 9° 17' 40" N., Long: 84° 29' 30" to 84° 27' 30" W., 14 miles S. X E. of Judas Point, Costa Rica, dredged in 42-61 fathoms (76.5-112 meters).
Length, 33.4 mm.; diameter (including varices), 11.2 mm. P. 89.
DuShane, H. (1974).
pp: 34. Fig. 54.
Figure 54: Epitonium (Cirsotrema) togalum, Hertlein & Strong, 1 95 1. Live-taken specimen, Manzanilla, Colima, Mexico; length 16 mm; width 6mm; Shy Collection X 5.6
DuShane, H. (1988g).
