71 



in color, Pupa ovata, P. milium, &c.) and its broadly ovate form elegant- 

 ly rounded below and acute above, with the same beautiful outline re- 

 peated in the aperture, as in some Phasianellae. The last two species 

 have a striking coincidence in the general plan of sculpture, re- 

 flection of the left side of the lip, &c-, and evidently belong to a re- 

 stricted natui'al group, which perhaps should be separated from Cingu- 

 la. We have been unable to obtain more than one specimen of 

 each of these species. 



LiTiOPA EFFCSA. Shell elonj^atcd, ovatc : of a uniform brown wax 

 color, subtransparent : apex obtuse : spire with the outlines very con- 

 vex above, nearly rectilinear in the rest : whorls six, quite convex, 

 with a well impressed suture : aperture ovate, anteriorly produced so 

 as to resemble a very broad short canal : labrum thin, not very sharp, 

 somewhat reflected : columella slightly twisted. 



'Mean divergence about 35°; length of spire .OG inch ; total length 

 .11 inch ; breadth .OG inch. 



LiTiOPA OBESA. Shell ovate : of a uniform brown wax color, 

 subtransparent : smooth : apex obtuse : spire with the outlines mod- 

 erately convex: whorls five, rather convex, with a distinct suture ; 

 last whorl large : aperture large, obliquely subrhomboidal, effuse, but 

 scarcely produced anteriorly : labrum very thin, retreating above, 

 scarcely reflected : columella slightly arcuate. 



Mean divergence about oo"^; length of spire .08 inch; total length 

 .185 inch ; breadth .11 inch. 



LiTToRiNA Jamaicensis. Shell oblong conic : with transverse 

 somewhat oblique flames of rusty brown or slate color or black, on a 

 white ground, which are interrupted on the middle of the whorls by 

 a spiral slate-colored or black band, winch is of unequal width in 

 different shells and in different parts of the same shell, but is itself 

 sometimes interrupted by the continuity of the transverse flames of 

 white and slate color ; brown on the columella ; brownish black within, 

 with a spiral band of white near the anterior extremity :, solid, with 

 very deep rather distant spiral strife, of which there are about eight 

 on the penult whorl, and which are more crowded anteriorly : apex 

 very acute: spire with the outlines nearly rectilinear: whorls seven, 

 convex, with a lightly impressed suture ; last whorl with an angular 

 and subcarinated periphery : aperture rather broadly ovate : colu- 

 mella arcuate and flattened. The sculpture of this shell is like that of 

 L. carinata Orb. and the form is like that of L. lineata Orb. (L. 

 ziciac Desk, et al) but is rather more robust, and the shell is more 



