84 CATALOGUE OF PHANEROPNEUMONA. 
VII. ALYCAWUS. 
Operculum orbicular, rather shelly, obsoletely many-whorled. 
Shell conical or depressed; spire regular; last whorl dis- 
torted, compressed, much contracted behind the aperture; 
mouth circular, peristome regularly reflected. 
Alyceeus, Gray, Catal. Brit. Mus. Cycloph. p. 27; Pfr. in Z. f. I. 
p. 1851, p. 147 ; Consp. p. 19; Pnewm. Mon. p. 119. 
Cyclophori, sp. Pfr. olim. 
Cylostomatis, sp. Awett. 
1. Atycmus GIBBUS. B. M. 
Shell irregularly conical, inflated, rather thin, sculptured with 
longitudinal rib-like striz, flesh-coloured-grayish ; spire regu- 
larly elongate conical, with the apex rather blunt, orange- 
coloured or blackish; suture deep, simple; whorls 6, very 
convex, the last one protuberantly inflated laterally, contracted 
near the aperture, narrower anteriorly ; umbilicus excentrical, 
very narrow, scarcely pervious; aperture oblique, nearly cir- 
cular; peristome double; inner edge shortly produced ; outer 
edge shortly expanded, emarginated near the perforation. 
Height 8, greatest breadth 11, least br. 8 mill. 
Cyclostoma gibbum, /érussac, Mus.; Hydouxr in Guérin. Mag. 
1838, t. 117, f.1; Sow. Thes. n. 135, p. 139, t. 30, f. 247, 248 ; 
Pfr. Ic. n. 102, p. 104, t. 17, f. 4-6. 
Cyclophorus? gibbus, Pfr. in Z. f. Mf, 1847, p. 108; n. 21. 
Alyceus gibbus, Gray, Cat. Cycl. p. 28, n.1; Pfr. Consp. n. 175 ; 
Pnewm. Mon. p. 119. 
Hab. Cochin-China, Touranne (Eydoux). 
2. ALYCHEUS STRANGULATUS. B. M. 
Shell depressed, rather discoidal, thin, sculptured with very mi- 
nute rib-like strie, horn-coloured-whitish ; spire scarcely raised, 
blunt ; whorls 4, convex, the last one inflated laterally, narrower 
anteriorly, contracted near the aperture and furnished with a 
small reversed tube, which is incumbent on the suture; um- 
bilicus wide, open; aperture oblique, circular ; peristome simple, 
white, rather thickened and expanded, with the margins ap- 
proximate, joined by callus. Height 2}, greatest breadth 4, 
least br. 4 mill. 
Cyclostoma strangulatum, Hutton, MSS.; Pfr. in Z. f. Mf. 1846, 
p- 86; Jc. n. 103, p. 104, t. 17, f. 7, 8, t. 38, f. 35. 
Cyclophorus strangulatus, Pfr. in Z. f. M. 1847, p. 108, n. 30. 
Alyczeus strangulatus, Gray, Cat. Cycl. p. 28, n. 2; Pfr. Consp. 
n. 176; Pneum. Mon. p. 120. 
Hab. India, Landour. 
