140 Carcinological Fauna of India. 
The abdomen of the male, when denuded, has a broad convex ridge 
down the middle line; but when not denuded, the terminal segments 
of the male abdomen form with the basal joints of the chelipeds and 
first two pair of legs a remarkably flat surface, owing to the abrupt 
angular bending up of the last three abdominal segments. 
The sternal grooves of the female approach one another closely, but 
do not actually meet, on the second segment of the sternum, near the 
anterior end of which they terminate, but without tubercles. 
In the Indian Museum are 4 males and an egg-laden female, from 
Mergui, Port Blair, and the Persian Gulf. 
The carapace of the largest specimen is 24 millim. long. 
In one of the male specimens, in which the vasa deferentia are, as 
usual, wonderfully prominent, there are also openings in the basal joints 
of the 2nd pair of legs (3rd pereiopods) corresponding with the genital 
openings of the female. 
Distribution: Red Sea and Hast coast of Africa, Persian Gulf, 
Ceylon, Coromandel coast, Andaman Sea, Malay Archipelago. 
Subgenus Dromipia, Stimpson. 
Dromidia, Stimpson, Proc. Ac. Nat. Sci. Philad., 1858, p. 225: Henderson, 
Challenger Anomura, p 12: Ortmann in Bronn’s Thier Reich, V. ii. Arthropoda, 
p. 1155. 
Dromidia is stated to differ from Dromia in having (1) the efferent 
branchial channels defined each by a distinct ridge, and (2) the sternal 
grooves of the female produced to, and approximated together on, the 
segment bearing the chelipeds. 
Neither of these characters is sufficiently definite to be of generic 
value, and I do not think that they are enough to justify even sub- 
generic recognition. 
Henderson (Trans. Linn. Soc., Zool. (2) V. 1893, p. 406) includes 
Dromia (Dromidia) australiensis Haswell in the Indian Fauna, basing 
his identification on de Man’s figure (Archiv. fiir Naturges. LIII. 1887, 
i. pl. xvii. fig. 6.) But as that figure does not seem to me to correspond 
unequivocally with Haswell’s description (Proc. Linn. Soc., N. S. Wales, 
VI. 1882, p. 755, and Cat. Austral. Crust. p. 139), it is sufficient for 
present proposes to quote these references. 
Subgenus Crypropromia, Stimpson. 
Cryptodromia, Stimpson, Proc. Ac. Nat. Sci. Philad., 1858, p. 225: Miers, Cat. 
Crust. New Zealand, p. 57: Haswell, Cat. Austral. Crust., p. 138: Henderson, 
Challenger Anomura, p. 5: Ortmann in Bronn’s Thier Reich, VY, ii. Arthropoda, 
p. 1155. 
Epidromia, Kossmann, Reise roth-Meer., Crust., p. 69. 
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