■with Descriptions of New Species, o 



of a ja\y would deterniine the question. Recently Mr. Tryon 

 kindly forwarded to me three specimens containing, to my sur- 

 prise, the living animal?. Having perused the pa- ^^^ ^ 

 per of Crosse and Fischer on Eucalodium^ and my 

 attention having been directed to the different char- 

 acters of the land shell faunas of Lower California 

 and Mexico east of the Gulf, I examined the ani- 

 mal of Gabh's, C. Newcoiiibiana^ with much inter- 

 est. I obtained the jaws and lingual ribbons from 

 two of the specimens, and have little hesitation in 

 placing the species in the genus Eucalodium. The 

 following is a copy of Gabb's description, and the an- 

 nexed figure (fig. 2) was drawn by Morse from one 

 of the living specimens: 



Cylindrella {Urocoi^tis) NewcomViana Gabb. 



" Shell raoderately large, not decollate, slender, tapering more 

 rapidly below than near the apex, the first three whorls being of 

 the same size; whorls 11^^, flattened on the side, body whorl sub- 

 angnlar below, detached from the penultimate whorl for a shoi't 

 distance, and acutely angular above; suture impressed; aperture 

 slightly advanced and surrounded by broadly expanded lips, pro- 

 ducing a trumpet-shaped appearance ; inner margin straight, and 

 ending in an angle above and below^ ; outer margin curved, wider 

 in advance than behind, lips continuous, broadly expanded, and 

 somewhat thickened ; surface light horn color, marked by fine, 

 irregular, undulating and occasionally broken ribs, radiately and 

 obliquely disposed, and with the interspaces crossed by microscopic 

 revolving lines. 



"Animal light gray, equalling in length the aperture and penul- 

 timate whorl ; foot short, and regularly rounded posteriorly. 



'•'•Dimensions. — Length 1.9 in., length of aperture .45 in., width 

 of aperture .4 in., width of body-whorl .35 in. 



" Locality. — Hidden under loose volcanic rocks in the high table 

 lands of the interior of Lower California, especially about Moleje. 

 This and its congener ( C. irregularis Gabo) are essentially mountain 

 species, being only found in the highest regions. 



" Observations. — Tl^is shell resembles JJ. costata Gould, as fig- 

 ured by n. and A. Adams in Gen. Recent. Moll., pi. 76, fig. V. It 



