136 Carcinological Fauna of India. 
ii. Fourth (last) pair of legs at least as long as 
either of the first two pair eS .. Psrupopromia. / 4 
Sphxrodromia and Conchoecetes, and doubtfully also Pseudodromia, are to be 
looked upon as distinct genera. But there are undoubtedly forms that are trans- 
itional between Dromia and Dromidia, Dromia and Cryptodromia, and Cryptodromia 
and Petalomera, and even between Dromia and Pseudodromia, so that these ought 
not, in a natural system, to be separated, though for convenience they may stand 
as subgenera. 
Dromia, Fabr. 
Dromia, Fabricius, Ent. Syst. Suppl. p. 8359: Latreille, Hist. Nat. Crust. &c., V. 
p. 883, and Norv. Dict. Hist. Nat. IX. p. 583: Leach, Malac. Pod. Britt. Text of 
pl. xxiv A: Risso, Hist. Nat. Crust. Nice, p. 15, and Hist. Nat, Europ. Mérid. V. p. 32: 
Desmarest, Consid. Gen. Crust. p. 186: Milne Edwards, Hist. Nat. Crust. II. p. 170: 
Lamarck, Hist. Nat. Anim. sans Verteb. (2nd ed. 1838) V. p. 480: De Haan, Faun. 
Japon. Crust. p. 104: Dana, U. S. Expl. Expd. Crust. pt. I. p. 402: Stimpson, Proc. 
Acad. Nat. Sci. Philad. 1858, p. 226: Henderson, Challenger Anomura, p. 3: 
Ortmann in Bronn’s Thier-Reich, V. ii. Arthropoda, p. 1155. 
All parts except the tips of the fingers and of the dactyli are, gener- 
ally, tomentose. 
Carapace not elongate in the adult, strongly convex or subglobose. 
Front cut into three teeth, of which the middle one is on a lower 
plane than the others and is often so much smaller than them and so 
much deflexed as to be hardly visible from a dorsal view. 
Palate well delimited from the epistome : efferent branchial channels 
well defined, but not always bounded by distinct and unbroken ridges. 
The chelipeds may have some of the joints nodose, but the legs are 
smooth. 
None of the legs have the merus dilated. The last two pair of legs 
are distinctly subcheliform, the spine at the end of the propodite 
against which the dactylus closes being well developed. 
The sternal grooves of the female do not meet, and they end on the 
2nd segment of the sternum, between the 2nd pereiopods. 
The branchial formula is as follows :— 
Somites and Poo: Arthrobranchiz, 
F : ini Pleuro- 
ees EOE. Ant erior. peer, Dene 
Willig S06 ep. 0) O 0) = O ep. 
VAL eee 1l+ep. 0 0 0) = l+ep. 
TEX et O ep. 1 1 0 = 2+ep. 
2 ae O ep. 1 1 0 = 2+ep. 
Gee ee 0 1 1 (small) 1 = 3 
DIME 590 0 1 1 (small) 1 = 3 
DANN. aos 0 1 0 1 = 2 
XonVE 0 0 0 il et 
Total ... 1+4 ep. 5 4 4. 1444 ep. 
586 
