10 DE. J. G. DE MAN OK THE PODOPHTHALMOUS 



The posterior tubercle of the five of the gastric region, that 

 stands on the middle of the urogastric lobe, is situated exactly 

 in the centre of the circular cephalothorax ; its distance from the 

 next median gastric tubercle is greater than the distance of the 

 latter from the third, while the distances between the three 

 anterior tubercles are still somewhat smaller. Immediately 

 before the foremost median gastric tubercle, two still more 

 depressed rounded tubercles are found, situated close to one 

 another in a transverse line and occupying the epigastric lobes. 

 The protogastric lobes present a very small tubercle, placed on 

 the side of and immediately behind the second gastric tubercle, 

 and two or three other scarcely perceptible prominences more 

 laterally. Each of the hypogastric lobes is also provided at its 

 anterior angle with a very small tubercle equal in size to that 

 of the protogastric lobes, and therefore also smaller than the 

 median gastric prominences. Finally, some more or less acute 

 tubercles are found on the hepatic, epi- and mesobranchial lobes. 

 As regards the under surface of the carapace, I may remark 

 that it is wholly covered with the down which occurs in so many 

 species of this genus, except the postabdomen, which is nearly 

 smooth. The antero-lateral angles of the buccal cavity are armed 

 with two nearly equal small spines, which are even a little shorter 

 than the first antero-lateral spine of the carapace, being about 

 the same size as the second. The postabdomen is composed of 

 seven segments, of which the fourth, fifth, and sixth are coalescent ; 

 their outer surface is minutely punctate, but the rest are smooth. 

 The chelipedes are equal and a little shorter than the 

 cephalothorax, being about 32 millim. long ; the convex outer 

 and inner surfaces of the hands are smooth, though minutely 

 punctate, and the fingers nearly meet along their whole inner 

 margins, presenting some small tufts of very short hairs on their 

 outer and inner surfaces. In the male of this species the che- 

 lipedes are considerably larger. The legs of the second pair, 

 measuring about 66 millim., are somewhat shorter than twice the 

 length of the cephalothorax ; in the adult male they are, how- 

 ever, a little longer than twice the length of the cephalothorax, 

 according to Fabricius's type. The other legs successively decrease 

 in length. The legs are everywhere covered with a close down, 

 except the terminal ends of the dactylopodites. 



This specimen agrees perfectly with the typical specimen 

 of InacJius hyhridus, Fabr., except as regards the fourth (or last) 



