172 A. Alcock —Carcinological Fauna of India. [No. 2, 
with a wide hiatus at base when closed, both with a strong tooth on 
their opposed margins near the base, and with the outer margins 
carinate. In the female the chelipeds differ only in being much less 
robust, and in having the fingers much more closely apposable and 
toothless. Ambulatory legs long and slender : the dactylus of the last 
pair strongly falcate. 
[The basal antennal joint has one or two spines at its distal end, 
and the free portion of the antenna is much shorter than the carapace.] 
Length of adult, 6 to 7 millim. 
In the Museum collection, from the Persian Gulf. Ex coll. W. T. 
Blanford. 
Achseus lacertosus , Stimpson. 
Achseus lacertosus , Stimpson, Proc. Acad. Nat. Sci. Philad., 1857, p. 218. 
Achseus breviceps, Haswell, Proc. Linn. Soc., N. S. Wales, VoL IV. 1879, p. 483 
(sec. Haswell). 
Achseus lacertosus and breviceps , Haswell, Cat. Anstr. Stalk and Sess. eyed 
Crust., p. 3. 
Achsens lacertosus Miers, Zool. “ Alert,” pp. 181 and 188; and “ Challenger ” 
Brachyura, p. 8. 
Achseus lacertosus, J. R. Henderson, Trans Linn. Soc., Zool., 1893, p. 341. 
Carapace triangular, with the regions fairly well delimited and the 
surface quite smooth beneath a slight pubescence : hepatic region with 
a horizontal laminar tooth. Rostrum as long as wide, bilobed. An¬ 
tennae filiform, the free portion longer than the carapace. Eye-stalks 
long, slender, smooth. Chelipeds much stouter than the other le°-s, 
the meropodite being the stoutest joint, and the hand being incurved 
and the fingers compressed. The ambulatory legs are long and slender, 
the first pair being more than three times the length of the carapace : 
the dactyli of the last two pairs are strongly falcate. 
Length of adult about 6 millim. 
In the Museum collection are numerous specimens from the Anda¬ 
mans, from Palk Straits, and from the Orissa Coast. 
Acliseus ajjinis , Miers. 
Achseus affinis, Miers, Zoology of the ‘ Alert,’ pp. 181 and 188, and “ Challenger ” 
Brachyura, p. 8. 
Achseus ajjinis, de Man, Archiv. f. Naturges., LIII. 1887, p. 218. 
Achseus ajjinis, Henderson, Trans. Linn. Soc., Zool. (2) V. 1893, p. 341. 
Achseus ajjinis, Ortmann, Zool. Forsch. in Austr. and Malay Arch., Jena, 1894, 
p. 37. 
“ Carapace subtriangular and moderately convex, with the surface 
uneven, but the regions not very distinctly defined j the post-orbital 
