LIST OF LEECHES COLLECTED BY HAYDEN'S EXPEDITION, 1873. 



By a. E, Vebrhx. 



NepJielis lateralis Verrill (Say;, sp.) 



A plain, dark brown variety, Clear Lake, Col. (Lieutenant Carpenter). 

 Clepsine ornata Verrill, var. 6. 



In this large variety, the back is covered with numerous prominent 

 papillie, arranged in transverse rows. The two ocelli are united into 

 one. Clear Lake, Col. (Lieutenant Carpenter). 



Aulastomum lacustre Leidy, var. fuliginosiim Verrill. 



In this variety, the color is nearly uniform dark brown. From a lake, 

 elevated 9,000 feet, near Long's Peak (Lieutenant Carpenter). It occurs 

 also in pools near New Haven, Connecticut. 



Neplielopsis obscura Verrill, dark variety. 



The preserved specimens from this locality are dark olive, with black- 

 ish mottlings. Found with the Aulastomum, from a lake, at 9,000 feet 

 elevation, near Long's Peak, (Carpenter.) 



Nephelis quadristriata Verrill. 



One specimen is nearly uniform obscure dark brown ; another has 

 two broad, blackish, dorsal bands, with a narrow, light, median stripe. 

 Little and Big Thompson, Estes Park, Col. (Lieutenant Carpenter). 



Clepsine pallida Verrill, var. h. 



The back is smooth, with narrow, dark stripes; six distinct ocelli. 

 Occurred with the two preceding. 



Clepsine pallida Verrill. 



The preserved specimens are brownish, with six small ocelli. Colorado 

 (Lieutenant Carpenter). 



LIST OP TERRESTRIAL MOLLUSKS COLLECTED BY LIEUT. 

 W. L. CARPENTER, U. S. A., FOR THE UNITED STATES 

 GEOLOGICAL SURVEY OF COLORADO, 1873. 



By William G. Bustney. 



HELICID^. 



Helix pulchella, Miill., Este's Park. 

 Vitrina Pfeifl'eri, Newc, head of Gunnison River. 

 Patula striatella, Anth., Este's Park. 

 Succinea lineata, W. G. B., Este's Park. 

 Patula Cooperi, W. G. B., Grand River. 

 Patula strigosa, Lea., Grand River. 



