PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 327 
Muricidea n. s.? 
Young specimens of a Muricidea were obtained by Mr. Hemphill! at 
Cedar Keys, which do not agree with any species reported. It resem- 
bles the young of Urosalping cinereus, but is thinner, broader, and with 
a proportionally larger aperture within which are two brown revolving 
bands. The operculum is muricoid. If new, it may be called Jf. 
Hemphillit. 
Leucozonia cingulifera Lam. 
Key West, on rocks at low water, rare. 
Not to be confounded with ZL. cingulata, a very distinct West Ameri- 
ean species. This is probably what is reported by several authors as 
LI. Knorrii Deshayes. The animal is stated by Melvi'l to be of the color 
of raw beef. He obtained it from Key West on the coral reefs. 
Tritonidea tincta Conrad: 
Cedar Keys, rocks between tides. Florida Keys (Calkins). 
This has been confounded with the quite distinct 7. ringens, from the 
western coastof America. Itis probably the ‘*Cantharus coromandelianus 
Lam.” of Melvill’s list. He obtained it at Key West, abundantly, on the 
reefs. It recalls the 7. insignis of Reeve much more than the ringens, 
but is quite different from either. 
Tritonidea cancellaria Conrad. 
Cedar Keys, Calkins and Hemphill. Ship Island, Gulf of Mexico, 
Conrad. Itis likely that Tritonidea floridana Petit is a mere variety of 
this shell. 
Mitra albicostata C. B. Adams. : 
Key West; reefs at low water, rare. Jamaica (C. B. Ad.) Adams 
described this species under the above name. 'Mérch apparently re- 
fers to it under the name albocincta “C. B. Ad.,” but I have not been 
able to find that the name was altered by Adams. 
Mitra sulcata Gmelin. 
Key West; rare, with the last and next species. Not uncommon in 
the Antilles. 
Mitra (Mitromorpha?) floridana n.s. (Plate X, Fig. 12.) 
Shell stout, with four normal and two embryonic¢ whorls, the latter 
smooth, the tip so obliquely twisted in as to appear reversed, the transi- 
tion from smooth to sculptured surface abrupt; shell fusiform, slender, 
the last whorl about two-thirds of the whole length; the whole deep red- 
brownish-black; surface cancellated by transverse and spiral stout 
threads pretty equally distributed, nodulous at their intersections and 
with deep interspaces; principal spiral threads increasing from three on 
the early whorls to ten or more on the last one; suture distinct, not 
channeled; aperture narrow, outer lip thick, not reflected lirate pos- 
teriorly; inner lip witha thin varnish of callus; four spiral plaits nearly 
