OF CONCHOLOGY. 185 



mens collected by Gill were submitted by me to Pfeiffer, who de- 

 termined them to be B. tenuissimus. 



24. Spikaxis simplex, Guppy. Ann. and Mag., June, 1868. 

 I have not seen this species. 



25. Orthalicus undatus, Brug. 



Widely distributed in Trinidad. Gill, Guppy. Also in Ja- 

 maica, Florida, &c. 



Guppy (Ann. and Mag., 1. c.) calls this shell B. zebra, MiilL, 

 considering that species and 0. undatus to be the same, the for- 

 mer name having priority. Shuttleworth (Notit. Malac. i, 1856) 

 separates them, and his views have been adopted by Pfeiffer, 

 (Mon. iv, 1859.) The apicial whorl in the Trinidad shells (and 

 also in the Florida specimens) is of a dark purplish brown color. 

 Shuttleworth describes the apex of 0. zebra as immaculate. 



26. STENoaYRA OCTONA, Chemnitz. 



Commonly found in the cultivated ground, and among decay- 

 ing wood and leaves. Gill, Guppy. 



Widely distributed in the West Indies and South America. 



27. Stenogyra plicatella, Guppy. Ann, and Mag., June, 



1868. 



In the same situations as S. octona, but not so common. Gup- 

 py. Also in Grenada. Guppy. 



Under this name Guppy describes three forms, which in his 

 previous publications he referred to S. octonoides, C. B. Ad. 

 There appear to me to be two species — S. subula, Pfr., and S. 

 octonoides^ ? C. B. Ad. 



28. Stenogyra caraccasensis, Reeve. 



Found with the two preceding species. Gill, Guppy. 

 Occurs also in Barbados, Grenada, Guadeloupe and Haiti, and 

 in Mexico and South America. 



29. Stenogyra coronata, Guppy. Ann. and Mag., June, 1868. 



" Allied to Melaniella gracillimas Pfr." I have not seen this 

 species. 



30. Lbptinaria (Tornatellina) blandiana, Pfr., Mai. Blatt., 



1867. 



Viviparous. Found chiefly among decaying wood and veg- 

 etable matter, particularly in some gardens at Port-of-Spain ; 

 also on the tops of trees in the forests over a great part of the 

 island. Gill, Guppy. 



