SUBALPINE MOLLUSCA. 6^ 



spread nearctic species occurring on several ranges of 

 mountains between 7,500 and 9,700 feet, as well as in 

 the lower country, where moist enough, down to the sea 

 level, in Ventura Count}', Cal., as far south as 34'' 30' 

 near the coast. 



3. CoNULUs FULVUS Draparnaud. Six specimens 

 closely resembling European types were found at Reed's 

 River. East of Mono Pass, at 8,000 feet, 30 were col- 

 lected, which are more depressed, lower and wider, with 

 narrow umbilicus, thus resembling Dall's C. chersineUus, 

 a form found at the Calaveras Big Trees, 4,750 feet alti- 

 tude. According to Binney (Amer. Land Shells, p. 69), 

 a similar depressed form is found in Europe (C mortoui 

 Jeff.), and another very similar was called C. egena 

 Say. The only character distinguishing Dall's shell 

 seems to be one less whorl, and still greater depression. 

 The dimensions given by Dall are not as large as those 

 of some varieties of C. fuhnis, but the scale given with 

 his figure is a third larger and liable to mislead. This 

 species is also said by Ingersoll to go to 10,000 feet high 

 on the Rocky Mountains, and being circumpolar, de- 

 scends to the sea-level north of latitude 42°. 



4. Patula striatella Anthony. A form approach- 

 ing var. cronkhitei Newcomb, occurs at Lake Eleanor and 

 also at Bloody Canon, having also about the same dis- 

 tribution across the continent as Hyalina arborea, but 

 reaching 1,000 feet higher in the Rocky Mountains and 

 not descending to sea-level in CaHfornia. It is, however, 

 reported from Vancouver's Island. 



5. MicROPHYSA PYGM^A Draparnaud. Also a cir- 

 cumpolar species found with the last, but not yet detect- 

 ed so commonly in the central mountain ranges, perhaps 

 on account of its minute size, as it occurs near sea-level 

 and is said to be found in many distant parts of the w^orld. 



