115 



1600 Cockerell, Theodore D. A.: 



Notes on the North American species of Succinea. Nautilus 

 6:21-23. 29-31. 7:43-46. 



A valuable study, including some western forms. 



1601 Cypraea Bayerquei 



Cretaceous, of California, as also the next. 



1602 Cypraea Matthewsonii 



1603 Cypraea Squayerii Campbell, Nautilus 7:52, t 2 f 1-2. 

 Cretaceous, on the upper Missouri, Montana (Nautilus 6:50, 



nomen). 



o 



1604 Stearns, Robert Edwards Carter: 



Preliminary descriptions of new molluscan forms from West 

 American regions, etc. Nautilus 6:85-89. 

 Describes numbers 1605-1611. 



1605 U vanilla regina 



Type locality: — Guadalupe Island, Baja Cal. (George D. Por- 

 ter). — Also from San Clemente Island, Cal. (Chas. H. Lawrence). 

 — Gulf of Cal. 



Dall, Nautilus 24:111 as Tegula. 



"Shell conical, imperforate, black or purplish-black; whorls 6 

 -7, concave, longitudinally somewhat obliquely plicated, the plicse 

 more or less projecting at the suture, and on the edge of the basal 

 whorl, producing an undulating or crenulated effect. Otherwise 

 sculptured by incremental striae which traverse the surface and 

 cross the plica? at right angles. Base concave, radiately, closely 

 and prominently striated, more conspicuous, flattened, coalescing, 

 and sinuously curving at the edge. Commencing at the point 

 where the outer lip joins the body whorl, a shallow groove follows 

 parallel to the periphery and extends toward the aperture, with- 

 out interrupting the basal sculpture. Aperture obliquely sub- 

 angulate, black-rimmed and crenulated on the thin edge of the 

 outer lip; nacreous, silvery white toward the edge, bright lus- 

 trous golden yellow within and around the umbilical region, which 

 latter though deeply pitted is not open. Columella white, cal- 

 loused, arcuated with a moderately developed rib bounding the 

 umbilical depression, and terminating in a single tubercle. This 

 rib is paralleled by a shallow furrow terminating in a notch just 

 below the tubercle, and by an exterior or outer ridge, part of the 

 way double, of a brilliant orange color; this orange-colored rib 

 is also exteriorly bounded by a shallow furrow which becomes 

 obsolete toward the aperture. The base of the shell otherwise 

 exhibits faint revolving sculpture. Dimensions: Altitude, 36 mm., 

 diameter maximum, 34 mm. The above combines the sculptural 

 features of the Japanese Chlorostomas and West Mexican Uva- 

 nillas, more particularly U. olivacea. It is a much handsomer 

 shell than the latter and the most northerly form of the group 

 yet detected on the west coast." — Stearns, Nautilus 6:85-86. 



1606 Chlorostoma gallina multifilera 



Type locality: — Guadalupe Island, Baja Cal. (Geo. D. Porter). 



1607 Bulimulus (Pleuropyrgus) Habeli 

 Chatham Island. 



1608 Orchidium Lesliei 

 Chatham and Albemarle Islands. 



1609 Litorina (Tectarius) Galapagiensis 

 James Island. 



