MOLLUSCA OF INDTA. 195 
tura valde obliqua, circulari, undata, peristomate duplici, interiori 
continuo, expanso, nitidissimo, prope umbilicum sinuato, exteriorr 
expanso, incrassato, ad anfractum penultimum breviter interrupto ; 
umbilico perspectivo. Operculo corneo-fusco, multispirato, anfractuum 
marginibus scabre elevatis, extus profunde concavo, intus convexiusculo, 
nitidissimo, sulco marginato, wnbone centrali papillart munito. 
« Diam. major 10, minor 8, axis 5 mill. 
“« Hab, ad Akaouktoung, prope ripas fluvii Irawadi, nec raro. 
Sa eeaer. The scabrous cancellation of the inflated part only of 
the last whorl is an unusual feature, no trace of the spiral rugze 
appearing elsewhere on the whorls. 
“The origin of the sutural tube is about 4 millimetres from the 
aperture. ‘This shell has much affinity with the Bornean Alyceus 
spiracellum, A. & R., which has a somewhat similar operculum. 
Dr. Pfeiffer informs me that it is an Alycceus, and not a Pterocyclos, 
as conjectured by him before he had an opportunity of inspecting 
the shell.” 
Atyomus naGAENsIs, Godwin-Austen. (Plate XLIV. figs. 3, 3a, 
3b, 3c.) 
Alyceus ingrami, var. nagaensis, Godwin-Austen, Journ. A. 8. B. 
1871, p. 92, pl. v. fig. 2; Theob. Supp. Cat. p. 40; Nevill, Hand- 
list, p. 292. 
Original description :—‘ Shell depressedly globose, openly um- 
bilicated, thick, shghtly translucent, white, generally covered with 
a thin muddy coating, finely and sharply costulated throughout. 
Spire depressedly conoid, apex blunt, suture impressed; whorls 4, 
rounded, the last much swollen, constriction close to the base of 
sutural tube, slightly swelling again towards the mouth, quite 
smooth, sutural tube very long and thin. Aperture oblique, circular, 
peristome double, both lips close and slightly expanded. Operculum 
black, smooth, and concave in front, convex at back, with a central 
boss. 
Maj. diam. 8-0, min. 6:8; alt. 5-0, diam. ap. 3°5, sut. tube 3°5 mm. 
bi O73 2. Ge oO 20) Ob uote Ort Se Ge Oa mich: 
“‘ Hab. Neighbourhood of As:l, rather local in its distribution, 
but there abundant. 
“Its well costulated surface distinguishes it from the preceding 
variety of A. ingramt.” 
ALYCEUS BRAHMA, n. sp. (Plate XLVIII. fig. 3.) 
Locality. Brahmakund (AZ. Ogle). 
Shell turbinate, umbilicated ; sculpture very fine, longitudinal or 
spiral hair-like striz, crossed by distant costulation, the ribs alter- 
nately very fine ; colour whitish grey; spire high-conic, apex fine; 
suture impressed, the tube long; whorls four, well rounded, the 
swollen portion regularly ribbed for the length of the sutural tube, 
then blending gradually into finer costulation, the last suddenly 
flattened just within the umbilical region, constricted sharply just 
beyond the base of the sutural tube, then straight and cylindrical up 
