Binney on Terrestrial MoUuaks. 151 



Affinis qiiidcm et prjecedenti (C Pilnceri Pfr.) et sequcnti (C Gold- 

 ftissi Mke.), tamen carina basalo anfractun ultimi et ejus torsione tam ain- 

 gulari, ut testaui primo aspectu sinistrorsem putes, ab omnibus distinctis- 

 simo. 



CYLINDRELLA COLDFUSSI Pfeiffek. 



Plate LXXIX. Figuue 33. 



C. testa elllptlco-oblonga, subcylindracea, apice conica, integra, acuta ; 

 umbilicata, luteo-cornea, tenui, pellucida ; anfractibus undecim, convex- 

 iusculis, dense et tenuissime arcuatim costulatis: infiiuo parum protracto, 

 basi rotundato, compiessiusculo ; apertura patente orbiculato-subcordata ; 

 canaliculo brcvissimo, obtuso. (Pfi'-) 



SYNONYMS AND EEFEKENCES. 



Cylindrdla Goldfussi Menke, in Zeitsch. f. Mai. 1847, p. 2. 



Pfeiffek, Mon. Hel. Viv. ii. 383; iii. 579. 

 PiiiLii'Pi, Icon. iii. 17, p. 6, tab. iii. fig. 9. 



DESCRIPTION. 



Animal not observed. 



Shell umbilicated, elongated, more ventricose at the 

 middle, apex conic, not truncated, thin, diaphanous, light 

 horn-color, marked with numerous light subarcuate striae ; 

 whorls 12, scarcely convex, narrow, the last slightly ex- 

 tended beyond the body of the shell, carinated, its right 

 side somewhat furrowed, rounded at base ; aperture sub- 

 vertical, obliquely and subtri angularly pear-shaped ; perist. 

 slightly expanded at its entii-e circumference, its right ter- 

 mination flexuose. 



Length, 11 ; diameter, 4? mill. 



Geographical Distribution. Texas, (Pfeiffer.) 



Remarks. The figure (somewhat magnified) is drawn 

 from a specimen from Mr. Bland's collection. 



In general form, it is more nearly allied to Macroceramus 

 pontijicus than any other figured in the " Mollusks." 



Spurious Species. 



Cylindrella pontijica Gould (p. 306) is Macroceramus pontijicus, 

 vid. p. 137. 



