194 LAND AND FRESHWATER 
‘Size: maj. diam. 6:0, min, 5-0, alt. 33, aper. diam. 1? mm. 
% 0-24, ¥,," 0-20,55° 0°13, ¥ 0-07 inch. 
“ Habitat prope Tongoop, Arakan. 
“The present belongs to the typical group of Alycceus, according 
to Mr. Benson, and is most nearly allied to A. wmbonalis, B., from 
Pegu. It is distinguished from that species by its more raised spire, 
smaller size, shorter sutural tube, and shallower suture, by its less 
oblique mouth and non-descending last whorl, and by its duplex 
slightly expanded peristome, which contrasts strongly with the 
broadly reversed tip of A. wmbonalis. That species also has the 
upper whorls much more closely, but less sinuously, costulated than 
are those of A. ingramt. In the subangulation of the last whorl at 
the periphery there is some resemblance to the little Thayetmyo 
A. sculptilis, B., which, however, is easily distinguished by the 
characters of its crenulated peristome, besides other peculiarities. 
* * * * 
“T have much pleasure in naming this form after Captain Ingram, 
to whom I am indebted for a very large collection of shells, chiefly 
from Arakan and the Arakan hills, and embracing altogether about 
50 species, several of which had escaped my own search, A. ingrami 
was found in only one spot, viz. in earth, at the sides of a large mass 
of limestone about 3 miles 8. W. of Tongoop. There it was abundant.” 
ALYczZus umponaLis, Benson. (Plate XLIV. figs. 2, 2a, 2b, 2c.) 
Alyceus umbonalis, Benson, A. M. N. H. 1856, vol. xvii. p. 225; 
Pfr. Mon. Pneum. vol, ii. p. 36; Pfr. Novit. Conch. vol. i. pl. xxxv. 
figs. 18, 19, 20; Hanley, Conch. Ind. p. 38, pl. xcii. figs. 8, 9; Reeve, 
Conch. Icon. vol. xx. pl. iv. fig. 36; Theob. Supp. Cat. p. 40; 
Nevill, Hand-list, p. 293 (from Bassein, Thyetmyo, Arakan, and 
typical locality). 
Locality. Akouktoung or Kyouktoung, on bank of Irawady River. 
In the Blanford collection there are seven species from the typical 
locality, one of which I have figured ; there is one from Thyetmyo, 
smaller and more globose with higher spire, costulation coarser, and 
on the swollen part each rib is duplicate, and the peristome is 
thicker. Size, major diam. only 9°8, as compared with the largest 
from Akouktoung, which is 11°8. There are also two from the 
Arakan hills, east side, on the Tongoop road, 10-3 in major diam., 
quite like the type except that the peristome is rather better deve- 
loped. From Mai-i, Arakan, I have a single specimen sent me by 
Stoliczka, similar to this species, but with a very short bent sutural 
tube, entire, not broken off; costulate throughout, but very distantly 
so near the apex. As I have only one specimen I can only consider 
it a variety, and perhaps an accidental one. 
Original description :—‘* Testa late umbilicata, depressa, subdisco- 
idea, confertim acute arcuatim costulata, cinereo-albida, apicem versus 
obtusulum, rubellum vel nigrum, rubescente ; spira brevi, sutura pro- 
funda; anfractibus 43% convewis, ultimo ad latus, spiraliter rUugoso- 
‘cancellatum, inflato, tum constricto, deinde tumidiusculo, tubulum 
retroversum, elongatum suturalem pone constrictionem gerente ; aper- 
