TRIBE SOLENIDZ. 17 
S. Acutrpens. Sow. § Brod. Z. J. 4.—Reeve t. 26. f. 2.— 
Beechey. Zool. t. 43. f. 2.—S. Micuaunr. Cail. in Mag. de Z. 
1839. Mol. C.2. Linear, ventral and dorsal margins sub-parallel, 
the former sub-incurved in the middle, sides rounded ; thin, white 
under a green epidermis : hinge at one third the distance from the 
posterior end, the teeth narrow, in one valve two small ones, a long 
and a very small one in the other. ?..3.—Sumatra, India. 
S. Acuminatus. Nobis. in Z. P. 1842. Elongated, breadth 
rather more than thrice the length, posteriorly rounded, anteriorly 
attenuated but rounded at the tip, dorsal and ventral edges both 
curved, the latter with a sub-medial incurvation ; white under 
a greenish-grey epidermis: two narrow teeth in each valve, one 
much the smaller. #..23.—India.* 

* The genus GLAUCONOME is considered as belonging to the Sole- 
nacee by Mr. Reeve in his system of Conchology, an opinion I 
am the more inclined to assent to, from knowing that Linneus has 
already described one of its species under the name of Solen Virens. 
(1115.—D. p. 70.) 
GLAUCONOME. Gray. 
Oblong-oval, thin, equivalve, inequilateral, margins closed, 
covered with a horny cuticle: three cardinal teeth in each valve, 
the anterior the larger, the middle of the right and the anterior 
of the left bifid, no lateral teeth ; a posterior marginal oblong, 
and an anterior sub-quadrate muscular impression, the palleal 
with a large broad and deep oblong sinus: ligament external, 
oblong. 
G. Cuinensis. Gray. Spic. Z.—Sow. G.—Reeve. ti 31. 
Nearly smooth, anteriorly attenuated, posteriorly rounded, cuticle 
thin and green. 3..13.— China. 
Mr. Reeve places the genus SoLeNeLLA of Sowerby with the 
Solenaceze, a position which at first, from the peculiar structure of 
its teeth, I felt disposed to cavil at, but whose correctness sub- 
sequent observation has confirmed. 
SOLENELLA. Sowerby. 
Transyersely-oval, sub-equilateral, equivalve, compressed, shining, 
with a thin olive cuticle: in each valve three or four continuous 
posterior lateral teeth, and an anterior sub-direct row of small sharp 
pointed ones ; muscular scars rather distant, the palleal with a 
large sinus: ligament external and elongated.—S. Norrisu. Sow. 
Z. P. 1832.—Sow. G.— Reeve. t. 30. Bluish-white under an 
olive-green cuticle with darker zones, smooth. 2..13.— Valparaiso. 
The genus Pholadomya of Sowerby is adopted by peshayes. 
Its characters are as follows : 
c 
