32 
ZOOLOGY OF THE VOYAGE OF H.M.S. SAMARANG. 
minute incisions, instead of creuatures, on the posterior edge of the carapace. Their species, 
the locality of which is unknown to Messrs. Edwards and Lucas, is probably a native of the 
Eastern Archipelago, and with our new C. dorsalis forms a very interesting addition to a 
genus which has been hitherto limited to but one species. 
2. CRYPTOPODIA FORNICATA, Junr. Herbst. t. 6. f. 4. 
In juniore thorax multo triangularior, ad angulos rotundior, postice directior, et superficies dorsalis 
pluribus pustulis obsita est, quam in animalibus adultis ; chelse etiam breviores et crassiores sunt, frons 
latior, rotundatior et distinctius erenulata, oculi majores, juga dorsalia eminentiora. 
Hae. Mare Sine use ; vadis sub mersis conch arum mortuarum et lapidum. 
Our figure represents, most probably, the young of this species ; the carapace is more 
decidedly triangular, more rounded at the angles, straighter behind, and the dorsal surface 
more covered with pustules than in the adult individuals ; the chelae, moreover, are shorter 
and comparatively thicker, and the front is wider, more rounded and distinctly crenulated, 
the eyes are of comparatively greater size and the dorsal ridges more prominent. 
Hab. China Sea; submerged banks of dead shells and stones. 
3. GONATONOTUS, Adams 8f While. 
Thorax pentagonalis, depressus ; anguli laterales acutissimi. 
'Frons latissima, lamelliformis, dilatata, rotundata, ad fines subnictata; oculi magni, eminentes, 
peduneuli breves in nictu profundiore ad latus iuserti ; antennae exteriores, appendice terminali 
elongata. 
Chela suberassse ; carpus rotundatus et interne spinosus ; ungues in margine serrati. 
Pedes tertii et quarti paullo longiores secundus et quintis ; articuh tarsales secundi, tertii, quarti 
et quinti pariiun, sequali magnitudine et crassitudine ; quinto pedum pari supra quartum inserto. 
Abdomen feminse septein articuhs, tribus vel quatuor articulorum basaliuni supra conspiciendis. Mas 
ignotus. 
Carapace pentagonal, depressed ; lateral angles very sharp. 
Front very wide, lamelliform, dilated, rounded, slightly notched at the end ; eyes large, 
prominent, peduncles short, inserted in a rather deep notch on the side. Outer antennae 
with the terminal appendage elongated. 
Fore-legs rather thick ; fourth joint or wrist, rounded and spined on the inside, claws 
serrated on the edge. 
Third and fourth pairs of legs rather longer than the second and fifth, tarsal joints of 
second, third, fourth and fifth pairs of equal size and thickness ; fifth pair of legs inserted 
above the fourth pair. 
Abdomen of female, seven-jointed, three or four of the basal joints seen from above. 
Male unknown. 
This genus is allied to Eumedonus. 
