Carcinological Fauna of India. 129 
pair to be a little longer than the third pair, and occasionally the fourth 
pair are as long as either of the first two pair. 
The abdomen in both sexes consists of 7 segments, and there is a 
pair of lateral platelets intercalated between the last two segments. 
The gills are phyllobranchie and are 14 in number on either side.f 
An epipodite of small size is present on the chelipeds but not on 
any of the legs.f 
The sternal grooves of the female are variable: they may end at 
the level of the genital openings, or at the bases of the first pair of legs, 
or at the bases of the chelipeds. 
To this Family the following genera belong :— 
1. *Dromia, Fabr.: seq. ] b 
2. *Dromidia, Stimpsoa, Proc, Ac. Nat. Sci. Philad. 1858, p. 225 (subgenus of 
Dromia). 
3. *Cryptodromia, Stimpson: seq. (subgenus of Dromia). 
4. *Petalomera, Stimpson: seq. (subgenus of Dromia). 
5. *Pseudodromia, Stimpson: seq. (? subgenus of Dromia). 
6. Eudromia, Henderson, Challenger Anomura, p. 13. 
7. ?2?Ascidiophilus, Richters, in Mobius, Meeresf. Maurit. p. 158 (it is very 
doubtful whether this form really belongs to the Dromiacea). 
8. *Conchoecetes, Stimpson: seq. 
9. Hypochoncha, Guérin, Rev. et Magasin de Zool. (2) VI. 1854, p. 333. 
10. *Sphzerodromia, Alcock, seq. 
Tribe II. HOMOLIDEA. 
The Homolidea may be divided into two families Homolide and 
Latreillide. 
To the Homolidz belong (1) Homola (with subgenera Homolaz and 
Paromola), (2) Paromolopsis and (3) Hypsophrys, all of which are 
represented in Indian Seas. 
To the Latreillide belong (1) Latreillia and (2) Latreillopsis, both 
of which are found in Indian Seas. 
Tam uncertain of the position of Homologenus A. Milne Edwards, which, but 
for its singular branchial formula, would be placed with the Homolide. It may 
perhaps have to be separated as a distinct subfamily of the Homolide. The refer- 
ences to the literature of this genus are: Bull. Mus. Comp. Zool. VIII., 1880, p. 34, 
(Homolopsis name pre-occupied): Challenger Anomura, p. 20: Bull. Soc. Philom., 
Paris, (8) VIII., 1896, p. 63: Bronn’s Thier Reich Y, ii., Arthropoda, p. 1156. 
+ Huxley (P. Z. S. 1878, p. 785) gave, as the sum of the branchial formula of 
Dromia, gills 16+1 epipodite. Milne Edwards (Hist. Nat. Crust. II. 172) stated 
that the gills are 14 in number on either side. I have examined Dromia Rumphii 
and D. ciliata, Cryptodromia lateralis, Petalomera granulata and Conchoecetes arti- 
ficiosus, in all of which I find 14 branchie and 4 epipodites on either side: of the 
epipodites, 3 belong to the maxillipeds, and one—a small one—to the chelipeds. 
579 
