MUSEUM OF COMPARATIVE ZOOLOGY. 43 



The animal extends itself into a long cylindrical worm-like body, with ob- 

 tuse ends. Length wTien fully extended, 60 mm. 

 The synonymy of this species is as foUows : — 



Arion Andersoni, J. G. Coop., formerly Prophysaon Bemphilli, var., W. G. B., 



T. M. V. 

 Prophysaon Andersoni, J. G. C, in letters. 



Ariolimax Columbianus, Gould. 

 Ariolimax Californicus, J. G. Coop. 

 Ariolimax niger, J. G. Coop. 

 Ariolimax Hemphilli, W. G. B. 



Ariolimax Andersoni, W. G. B. 



Formerlj'- I supposed this species to be Arion Andersoni, of Dr. Cooper. 

 Learning that Dr. Cooper's sjjecies is a Prophysaon, I still retain for this the 

 specific name Andersoni, W. G. B. 



Arion foliolatus, Gld. 



Still a doubtful species, known only by the original figure and description. 



Binneya notabilis, J. G. Coop. 



Also found by Mr. Orcutt fifty miles from St. Quentin Bay, Lower 

 California. 



Hemphillia glandulosa, Bl. & Binn. 



Patula striatella, Anth. 

 Mariposa, California. 



Patula pauper, Mor. 



Patula asteriscus, Morse. 

 Tacoma, W. Territory. 



Patula solitaria, Sat. 



Plate I. Fig. 10. 



This can hardly be considered a species of the Pacific Province, though colo- 

 nies have been found west of the Cascades. (See pp. 27, 28.) 



The specimen figured was found by Mr. Hemphill at Wliite Bird Creek, 

 Salmon River, Idaho. 



Microphysa Lansingi, Bland. 



Microphysa pygmsea, Drap. 

 See p. 35. 



