23 
234 Ethalia supravaliata Cpr 
San Diego. Not rare. 
235 Fissurella (Glyphis) aspera Esch. 
Not common. San Diego. Sitka, Alaska. 
236 Fissurella (Glyphis) murina Cpr. 
Not common. San Diego. 
[This is the Glyphis densiclathrata of Californian concholo- 
gists, and for a time of Carpenter, but not of Reeve. D.] 
237 Fissurellidza bimaculata Dall 
San Diego. Rare. 
238 Clypidella (?) callomarginata Cpr 
Not common, 
[It is not certain that this is a Clypidella. D.] 
239 Acmeza mitra Esch 
Deep water; dead shells frequent. 
240 Acmea insessa Hinds 
On alge, San Diego, Cal., and Todos Santos bay, Baja Cal. 
Santa Rosa Island, Cal. (Yates). 
241 Acmea persona Esch. 
Abundant and very variable in form and color. Alaska, to 
Socorro Island. 
242 Acmea pelta Esch. var. 
A small elevated form is found beneath small stones imbedded 
in sand near high-water mark on the shores of San Diego bay. 
It is found in company with Chiton dentiens, Gld. and is not rare. 
243 Acmoea asmi Midd 
This very elevated little shell is found abundant on the shells 
of Chlorostoma funebrale, which it closely resembles in color. 
244 Acmea patina var. cumingii Rve. 
Less abundant than the other species. 
[This is nearly the southern limit of this form. D.] 
245 Acmea scabra Nutt. 
See 2396. 
246 Acmeza paleacea Gld 
Common on sea-grass outside the harbor at San Diego, and 
also found at Todos Santos bay. 
247 Acmza depicta Hds. 
On sea-grass; not rare. 
248 Chiton (Leptochiton) nexus Cpr 
San Diego. 
249 Chiton (Trachydermon) dentiens Gld 
With Acmea pelta, var. 
San Diego. [T. peudodentiens Cpr. D.] 
250 Chiton (Callochiton) fimbriatus Cpr. 
San Diego, Catalina Island. 
