406 
ALCADIA. 
Helicina hirsuta Adams in Ann. Lyc. N. -York V. p. 49; et Contrib. 
to Conch. N. 8. p. 133. *) 
Habitat in insula Jamaica. 
714 3. A. consanguinea Adams, f 
T. subglobosa, crassiuscula, striis incrementi distinctis 
notata, epiclermide subbirsuta induta, saturate rufa; spira cur- 
vilinearis, apice obtusa; anfr. 5 modice convexi; apertura 
semiorbicularis ; labrum superne sinuosum, modice incrassatum, 
acutum, praeter extremitates bene reflexum; incisura lata et 
brevis. — - Diverg. media 110°; lat. max. 0,6; lat. min. 0,5; 
alt. 0,45 poll. (Ad.) 
Helicina consanguinea Adams in Ann. Lyc. N. -Y. V. N. 2. p. 50; 
Contr. to Conch. N. 8. p. 134. **) 
Habitat Westmoreland insulae Jamaicae. 
715 4. A. micfl'ostomsfc Adams. -j* 
T. globoso- conica, crassiuscula, striis incrementi levibus 
seriebusque paucis spiralibus punctorum notata, fusca, juxta 
suturam et ad peripheriam pallida ; apex obtusus ; spira magis 
minusve, haud uniformiter, curvilinearis ; anfr. vix 5 modice 
convexi, ultimus subtus subplanulatus ; apertura semielliptica, 
superne et inferne compressa, lateraliter dilatata; labrum sinu- 
atum, bene expansum et praeter extremitates reflexum ; incisura 
*) Shell depressed globose, rather thin: brownish red, with an hirsute 
brown epidermis, having long hairs in six spiral lines, of which one is next 
below the suture and the others are on the middle and lower parts of the 
last whorl : with the striae of growth lightly impressed : apex rather obtuse, 
slightly mucronate : spire with the outlines much curved : whorls nearly five, 
slightly planulate, with a well impressed suture : aperture rather large, semi- 
elliptical ; lip rather thin and sharp , but well reflected so as to form a 
canal behind ; with the slit not very deep, but wide. — The slit has about 
the same proportions as in II. Hollandi , having less depth and a greater 
width than in II. pallida and H. Brownii. Except in its greater size , it 
very closely resembles the former species , which however wants the spiral 
lines of long hairs in the epidermis. The operculum of this species is much 
smoother. (Adams 1. c.) 
**) Shell subglobose, moderately thick: dark brownish red, with the lip 
white; with a somewhat hirsute epidermis, having the projecting points spi- 
rally arranged : with the striae of growth quite distinct : apex obtuse : spire 
with the outlines much curved : whorls five, moderately convex, with a well 
impressed suture: aperture semiorbicular ; lip sinuous above, moderately 
thickened and sharp , but well reflected except at the extremities ; with the 
slit broad and shallow. In most characters the species is intermediate be- 
tween H. hirsuta and albolabris. (Adams 1. c.) 
