102 
THE VOYAGE OF H.M.S. CHALLENGER. 
produced, tlie interior margin notched below the antero-internal angle. The chelipedes 
are nearly as in Lambrus ; the merus-joint has a wing-like lobe on the posterior margin 
near to the distal extremity ; the palms of the chelipedes are elongated, tricarinated, and 
dentated (as in Lambrus ) ; fingers short and more or less distinctly clentated on the inner 
margins. The ambulatory legs are slender and decrease successively but slightly in 
length, with the fourth, fifth and sixth joints more or less distinctly carinated ; dactyli 
nearly straight. 
The species, which have been enumerated by A. Milne Edwards, occur for the most 
part in the Oriental region, in water of moderate depth, but a species also occurs in the 
Gulf of Mexico and another on the coast of California . 1 
To the species mentioned by A. Milne Edwards is to be added : Cryptopodia 
spatulifrons, Miers (with var. Isevimana, Miers), which occurs on the coasts of North-east 
and West Australia and Borneo. 
Cryptopodia fornicata (Fabricius). 
Cancer fornicatus, Fabr., Spec. Insect., vol. ii. Append., p. 502, 1781. 
Cryptopodia fornicata , Milne Edwards, Hist. Nat. Crust., vol. i. p. 362, 1834, et synonyma. 
„ ,, Miers, Crust, in Rep. Zool. Coll. H.M.S. “Alert,” p. 203, 1884. 
Parthenope ( Cryptopodia ) fornicata, He Haan, Crust, in v. Siebold, Fauna Japonica, p. 90, pL 
xx. fig. 2 $ , 1839. 
South of New Guinea, in 28 fathoms, lat. 9° 59' 0" S., long. 139° 42' 0" E. (Station 
188), a female of rather small size. 
Adult f . 
Lines. 
Millims. 
Length of carapace and rostrum, 
9 
19 
Breadth of carapace, nearly 
14 
29-5 
Length of a chelipede, .... 
12 
25-5 
Length of first ambulatory leg, 
6J 
14 
Heterocry pta, Stimpson. 
Heterocrypta, Stimpson, Ann. Lyc. Nat. Hist. New York, vol. x. p. 102, 1871. 
„ Miers, Journ. Linn. Soc. Lond. (Zool.) vol. xiv. p. 669, 1871. 
This genus is very nearly allied to the preceding ( Cryptopodia ), and it may suffice 
here to indicate the principal characters by which it is distinguished. 
The clypeiform expansions of the carapace are less produced than in the Oriental 
species of that genus and cover only the bases of the ambulatory legs, and the carapace is 
scarcely, if at all, posteriorly produced beyond the base of the post-abdomen ; its dorsal 
lobes and carinse are more developed. The pterygostomian and subhepatic regions are 
traversed by a granulated ridge running parallel to the antero-lateral margins of the 
carapace, which terminates just above the antero-lateral angles of the buccal cavity. 
1 Crust, in Miss. Sci. au Mexique, pt. 5, p. 168, 1878. 
