Mr. R. J. L. Guppy on Diplommatina Huttoni in Trinidad. 95 
piceous or piceo-ferruginous ; the base of the elytra sometimes — 
ferruginous, and the rest black; the legs testaceous, piceo- 
testaceous, or piceo-ferruginous. Head finely granulose; the 
epistome separated from the rest by a very marked line of sepa- 
ration, and more depressed than the posterior part. Thorax 
broadest behind the middle; the truncature rounded, extending 
pretty far back ; a series of larger teeth and tubercles extending 
along the sides, others, not so large, across the back part ; the 
front merely granulose; the anterior margin nearly straight ; 
the posterior half of the thorax granulose or finely tuberculate 
in the middle, smooth, shining, and impunctate on the sides ; 
the basal margin with a transverse depression reaching to the 
posterior angles, marked with four longitudinal aciculations. 
Scutellum small. Elytra shining, sparsely and finely punctured, 
the punctures of different sizes and often indistinct, most deeply 
marked towards the sides and apex; the apical truncature 
nearly vertical, with the margin sloped with a gentle curve on 
the upperside, and with a sharp raised edge on the sides; 
the sutural line is also raised, and projects in the middle into 
two teeth ; there are also two smaller teeth within the truncature 
near the upper margin, corresponding in position to the termi- 
nation of the usual cost, which are not here present, but within 
the truncated space; near the apical margin the truncature is 
slightly hollowed. The underside is covered with a pale chestnut 
pubescence. 
Four or five specimens of this have been received. 
[To be continued. | 
XII.—On the Occurrence of Diplommatina Huttoni in Trinidad, 
By R. J. Lecumere Gurry, F.G.S., F.L.S. 
By the kindness of my friend Mr. Thomas Bland, F.G.S., of 
New York, I was made aware of the discovery, by Mr. Theodore 
Gill, in Trinidad, of a minute land-shell, which was believed by 
Dr. Pfeiffer to be identical with the East-Indian Diplommatina 
Huttoni. On the receipt of this information I took the earliest 
opportunity of making an expedition with the view of discover- 
ing this little shell, which had previously escaped my search. 
I was fortunate beyond my anticipation in finding the Diplom- 
matina; but upon the first search I only found two perfect ex- 
amples. Subsequently, however, I had the good fortune, on 
revisiting the same locality, to obtain more than twenty living 
examples. I could not, however, induce the mollusks to show 
themselves out of their shells; and I was obliged to destroy 
several in order to obtain a sight of the operculum and the 
