ON MOLLUSCA OP THE WEST COAST OF NORTH AMERICA. 251 



No. 



Name. 



Freq. 



Other Localities. 





Subclass PULMONATA. 









Order Geophila. 









Testacellida. 







230 

 231 



Glandina Albersi, Pfr 



e. r. 

 2 





——— turris 



Helicidae. 



232 



233 

 234 



Orthakcus zebra, Mull. 



c. 



e. r. 

 1 



Brazils, Peru, Columbia, West 

 Indies, Conchagua. 



=Bulirnus undatus, Lam. 

 -\-B. melanocheilus, Val. 

 4- Orthalicus livens, Beck. 

 -\-B. zigzag, Lam. 

 -\-B. princeps, Brod. 



? Mexicanus, Lam.,..» 



Order Limnophila. 





AuriculidcB. 







235 



Melampus olivaceus, n. s \ 



Lirnnidce. 



n. u. 



San Diego. 



236 



237 



238 



Physa aurantia, n. s 



= P. Peruviana, Mke. (non Gray). 

 elata, Gld. 



n. c. 



v. c. 

 n. u. 





Planorbis tumens, n. s. 



= P. tenagophilus, Mke., non D'Orb. 





Order Thalassophila. 









Siphonariadce. 







239 

 2396 

 240 

 241 



Siphonaria Lecanium, Phil. 



c. 



n. c. 

 1 

 1 



St. Elena, Guayaquil. 



, var. palmata 



aequilirata, n. s 



, sp. ind 



Subclass Prosobranchiata. 





Order Heteropoda. 









lanthinidce. 







242 



2426 



243 



Ianthina striulata, n. s 



, var. contorta 



V. c. 

 e. r. 

 e. r. 



Sandwich Islands, Nuttall. 



decollata, nom. prov 



Comp. /. globosa, Swains., and /. prolon- 

 gata, D'Orb. 





Order LateribrancMata. 









DentaliadcB. 







244 

 245 

 246 



347 



Dentalium liratum, n. s 



v. r. 

 1 



1 





hyalinum, Phil. 



corrugatum, n. s. 4 



pretiosum, Nutt 





Order Scutibranchiata. 









Chitonidce. 







248 



Lophyrus articulatus, Sow ♦ , 



c. 



San Bias. 





