UROCOPTIS OF JAMAICA. 115 



(1851). C. rosea Pfr., JOHNSON & Fox, Nautilus, v, p. 34 

 (July, 1891). C. bacquieana Chitty (?), HENDERSON, Nau- 

 tilus, viii, p. 19, no. 91. 



Adams' original description is given above. The typical 

 form of the species may be known by its rather obese form, 

 somewhat suddenly contracting above, the very superficial 

 sutures, the unusually strong, pinched-up, basal carina, and 

 the peculiar internal pillar, shown in pi. 30, figs. 45, 49, 50. 

 Within the last 4 whorls it is a stout column having a rather 

 weak spiral trend ; this becoming a strong twist in the fourth 

 whorl from below. Above this the pillar abruptly becomes 

 very slender, with but a slight twist. Other characters of 

 note are the great solidity of the shell, its small and rather 

 long neck and the irregular shape of half-grown shells (fig. 

 47). 



Shells sent by Mr. Jarvis from Rodney Hall (pi. 30, figs. 

 42-45) and Moore Town (pi. 30, fig. 46), Portland, agree well 

 with Adams' description. Specimens from the former 

 locality measure 22.5 x 8.5 mm., whorls 8y 2 ; 20 x 7.8 mm., 

 whorls 8*4 ;16.8 x 6 mm., whorls 7, etc. The brown sutural 

 band is often wanting. In Moore Town lata the apical whorls 

 are smooth, similar to pi. 32, f . 82. 



A slender variety (pi. 30, figs. 48, 49) from Rural Hill 

 (Jarvis) has 8y 2 to 10 whorls, a nearly circular mouth, and 

 the slender neck of the typical form. It is cylindrical and 

 narrow, and the brown internal axis is more slender, but the 

 thickened part extends a whorl farther up. Length 22, diam. 

 6.6 mm., with 10 whorls; length 19, diam. 6 mm., with 8y 2 

 whorls. 



With some specimens of lata in the A. D. Brown collection 

 there was a young shell, pi. 30, fig. 47, and pi. 32, fig. 80, in 

 which the apex is costellate. I am now inclined to think that 

 it belongs to some other species. 



Var. antonionis nov. (pi. 30, figs. 51, 52). At Port An- 

 tonio the shells collected by Henderson and by Fox are decid- 

 edly narrower and more cylindrical, 22 x 7 mm., with 8y 2 

 whorls. The color is dingy reddish-yellow, darker at the 

 suture, and the neck is not so long. The internal characters 



