78 DE. J. a. DE MAN OlS" THE PODOPHTHAI/MOTJS 



this crest and the upper margin the outer surface of the iiands 

 is covered with, some acute granules and spinules. ! 



The posterior margin of the penultimate joint o£ the natatory 

 legs is provided with some short teeth, as in T. frymna. Koss- 

 mann is doubtless w^rong in uniting into a single species all 

 TTialamitcB with eiglit frontal lobes ; but some species, however, 

 may prove to be mere varieties of others. 



As regards the figure of Thai, spinimana, published by Prof. 

 A. Milne-Edwards, I may observe that the strange form of the 

 front of this specimen is, without doubt, abnormal, similar abnor- 

 malities having been found by me also in other species of this 

 genus. 



Thalainita spinimana has been recorded from the Fiji Islands 

 and from New Caledonia, the closely allied and probably identical 

 Thai, cceruleipes having been found by the ' ISTovara ' Expedition 

 at the Nicobar Islands. 



54. Thalamita DANiE, Stimps. (PI. IV. figs. 8 & 9.) 

 Thalaraita crenata, Dana, Unit. States Expl. Exp. i. p, 282, pi. xvii. 



%• /". 



Thalamita Danse, Stimpson, I. c. p. 37 (1858) ; Alph. Milne-Edwards, 

 Archives du Museum Hist. Wat. 1861, t. x. p. 366, pi. xxx. fig. 1. 



Thalamita Stimpsoni, Alph. Milne-Edwards, I. c. p. 362, pi. xxxv. fig. 4. 



Six specimens (2 J , 4 $ ) were collected — three at Owen Island, 

 two at Elphinstone Island, and one at King Island. 



Thalamita Dance is, without doubt, a distinct species, distin- 

 guished by many constant and important characters. The internal 

 lobes of the upper orbital margin are very depressed and nearly 

 straight, differing much, therefore, from those of T. prymna and 

 T. spinimana. The ridge on the basal joint of the outer antennae 

 is armed with a row of granules, which are never spinulose. The 

 foregoing specimens wholly agree with the description and the 

 figure published by Prof. A. Milne-Edwards. The upper surface 

 of the carapace and of the legs is densely covered with short hairs. 

 In most of the specimens the antero-lateral teeth are nearly equal, 

 the fourth and the fifth being, however, a little smaller than the 

 anterior. The fourth tooth in this species, however, appears to 

 have a somewhat variable length, as has already been mentioned 

 by Mr. Miers (Ann. & Mag. Nat. Hist. 5th ser. vol. v. 1880, 

 p. 238), so I conclude that Thai. Stimpsoni, A. M.-Edw., is a 

 variety of Thai. Dance, differing only from it in the rudimentary 



