CLASS GASTROPODA 
83 
Antiplanes kamchaticus Dali, 1919 
Proceedings of the United States National Museum, 56:33; PI. 10, fig. 1. 
Shell sinistral, large, coarse, with a shining brown periostracum over a 
yellowish substratum, the suture distinct, the spire acute, the whorls 
moderately rounded; axial sculpture only of sigmoid lines of growth, with 
six whorls exclusive of the nucleus and about a whorl and a half of the 
apex, which are missing; spiral sculpture of fine, close, subequal striations 
with slightly wider interspaces, covering the whole surface; aperture 
wide, the outer lip sinuous, simple, the anal sulcus shallow, the canal wide 
and short. Height of shell, 51; or last whorl, 32; diameter, 27 mm. (Dali.) 
Type in United States National Museum, No. 225255. Type locality, 
western Bering Sea. 
Range. Southwestern Bering Sea, in 48-100 fathoms. 
Antiplanes catalinae Raymond, 1904 
Nautilus, 18:2. 
Shell sinistral, thin, elongated, slender, whorls ten to eleven; color 
light pinkish-brown, without bands, interior of aperture a little lighter; 
upper whorls more or less chalky; nucleus smooth, inflated; later whorls 
convex, suture deeply impressed; sculptured by fine incremental lines and 
on the last whorls a few obscure spiral striations, mostly below the 
periphery; anal fasciole traceable on the spire as a flattened or obscurely 
grooved band; aperture narrow; canal wide and short; pillar nearly 
straight, with a well-defined callus, obliquely truncate below; outer lip 
produced, deeply emarginate near the sutural margin of the whorl. Long, 
of shell, 27; of aperture and canal, 10.5 ; max. diam., 7.6 mm. (Raymond.) 
Type in University of California Collection. Type locality, off Catalina 
Island, in 125 fathoms. 
Range. Esteros Bay to San Diego, California. 
This was described as Pleurotoma catalinae by Raymond but placed in 
Section Antiplanes. 
Antiplanes rotula Dali, 1919 
Paleontology of California, 216; PI. 6, fig. 13, 1903. 
New name for A. smithi Arnold, 1903. 
Shell elongate, turreted, slender; spire elevated ; apex obtuse, mammilli¬ 
form ; whorls ten, convex, with a slight tendency toward angulation on 
the lower third of the whorl, and abruptly terminated at the posterior 
margin; suture very deeply impressed, distinct; sculpture consists simply 
[83] 
