ALYCAEUS $. 6—8. HYBOCYSTIS. OPISTHOSTOMA. 391 
subtiliter costata. Spira depresso-conoidea, apice perobtuso, 
sutura bene impressa. Anfr. 4, rotundati, ultimus modice in- 
flatus, ad basin tubuli suturalis constrictus, crista conspicua 
subverticali immediate pone aperturam munitus.  Constrictio 
laevigata; tubulus suturalis elongatus, crassiuseulus. Apertura 
obliqua; peristoma rotundatum, margine supero et externo 
(nee eolumellari) profunde undulatum, limbo externo parvulo, 
leviter expanso. Operculum multispirale, antice concavum, 
tubere parvulo prominente postice instructum. — Diam. maj. 
0,18, min. 0,16, alt 0,11; diam. apert. 0,08; tubulus suturalis 
0,15 poll.* (A. angl.) 
Alycaeus crenatus Godwin Austen in Journ. As. Soc. Beng. XL. 1871. p. 
90, t. 9. f. 5. 
— — . Hanl. & Theob. Conch. Ind. t. 103. f. 2. 3. 
Habitat ., Burrail Range, North-Cachar* in 5000" alt., 
Indiae. 
UT. 
45. amphora Bens. — Conch. Ind. t. 91. f. 2. 3. 
46. urnula Bens. — Austen 1871. t. 5. f. 4. — Conch. Ind. t. 91. f. 8. 9. 
51. Feddenianus Theob. — Conch. Ind. t. 91. f. 1. 4. 
8. 8. 
53. vestitus Blanf. — Conch. Ind. t. 103. f. 4. 
54. crenulatus Bens. — Conch. Ind. t. 97. f. 1. 4. 
XVII. Hybocystis Benson. 
(p. 67.) 
l. gravida Bens. — JMegalomastoma gravidum Hanl. & Theob. Conch. 
Indore] 
XVIII. Opisthostoma. Blanford, 
(p. 68.) 
l. Nilgirica Blanf. — Zanl. & Theob. Conch. Ind. VI. t. 117. f. 10. 
2. Fairbanki Blanf. — Conch. Ind. t. 117. f. 8. 
4. macrostoma Bedd. — Conch. Ind. t. 117. f. 9. 
