PLATE II. 



Fig. T,h. Gennadas clavicarpus de Man, left-half of the petasma of the third male, on which one observes, 

 instead of the large, rounded lobe of the distal border, a triangular, pointed process, the 

 acuminate tip of which is curved foreward : posterior surface, < 25 ; 37 thelycum of the type 

 specimen, the adult female from Stat. 128, X 17; 3/' thelycum of one of the four young females 

 from Stat. 230, long iS mm., ■ 25. 



Fig. \a — c. Hemipenaeus crassipes (W.-Mas.), legs of the first pair (4a), of the second pair (4b) and of the 

 third pair (4c) of the female from Stat. 85, X 1 '/r 



Fig. 5. Hemipenaeus Sibogae de Man, adult female, type, from Stat. 52, X 1 V3 J 5 a l e S °f tri e first pair, 

 5 b leg of the second pair, %c leg of the third pair of this female; X I Va- 

 Re mar ks: The measurements of the legs of the first and of the second pair of the females both 



of Hemip. crassipes (W.-Mas.) and Hemip. Sibogae de Man are indicated in the following table, because 



in the description of Hemip. Sibogae (p. 25) not only the carpi but also the chelae of these legs are said 



to be shorter and less slender than those of Hemip. crassipes, which, as regards the chelae, is not the 



case in these legs: 



Hemip. crassipes Hemip. Sibogae 



Length of the merus 



Width of the merus in the middle .... 



Length of the carpus 



Width of the carpus at the distal extremity 

 Length of the chela 



Width of the palm in the middle 



of the legs of the first pair | 



Length 



Width 



Length 



Width 



Length 



Width 



of the merus 



of the merus in the middle . 



of the carpus 



of the carpus at the distal extremity 



of the chela 



of the palm in the middle . . . . 



of the legs of the second pair 



Fig. 6. Aristeus virilis (Sp. Bate), carapace with the legs etc. of a young male, long 118 mm., from 

 Stat. 38, x 2; 6a leg of the third pair of the female from Stat. 262, X i l j 2 - 



Fig. 7. Aristeus semidentatus (Sp. Bate), leg of the third pair of the female from Stat. 262, X i'/s- 



Haliporus aeqiialis Sp. Bate, thelycum of the larger female from Stat. 262, X 6; 8a mandibular 

 palpus of the same female, X 5. 



Fig. 8 



