MUSEUM OF COMPARATIVE ZOOLOGY. 249 



Triforis (bigemma var.?) hircus Dall. 



Plate XX. Fig. 11. 

 Triforis hircus Dall, Bull. M. C. Z., IX. p. 83, 1881. 



Habitat. Yucatan Strait, 640 fms. 



Triforis (Sychar) abrupta Dall. 



Plate XX. Fig. 9. 



Triforis (bigemma Watson var.?) abruptus Dall, Bull. M. C. Z , IX. p. 84, 1881. 

 Habitat. Cape San Antonio, 640 fms. ; Yucatan Strait, 640 fms. 



Triforis (Sychar) torticula Dall. 



Plate XX. Fig. lib. 

 Triforis torticulus Dall, Bull. M. C. Z., IX. p. 82, 1881. 

 Habitat. Yucatan Strait, 640 fms. 



Triforis (Sychar) inflata Watson. 



Cerithium (Triforis) infatum Watson, Journ. Lin. Soc, XV. p. 101, 1880; Dall, Bull. 

 M. C. Z., IX. p. 81, 1881 ; Watson, Chall. Gastropods, p. 564, pi. xl. fig. 1, 

 1885. 



Habitat. Yucatan Strait, 640 fms. Off Culebra Island, in 390 fms., Chal- 

 lenger Expedition. Off Georgia, in 440 fms., sand, bottom temperature 45°. 6 F., 

 at Station 2414; and at Station 2662, in 434 fms., sand, off St. Augustine, 

 Florida, bottom temperature 43°.7 F., U. S. Fisb Commission. 



Triforis (Sychar) inflata var. ibex Dall. 



Plate XX. Fig. 12 b. 

 Triforis ibex Dall, Bull. M. C. Z., IX. p. 86, 1881. 



Habitat. Yucatan Strait, off Cape San Antonio, in 640 fms. Off Havana, in 

 450 fms., Sigsbee. 



Triforis (Sychar) inflata var. filata Dall. 



Habitat. Station 136, near Santa Cruz, in 508 fms., soft ooze, bottom tem- 

 perature 42°. 5 F. 



