80 DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
Goniosoma cruciferum, Alph. Milne-Edwards, Archives du Muséum 
Mist. Nat. 1861, t. x. p. 371. 
One male specimen was collected in the Mergui Archipelago. 
The distance between the points of the last antero-lateral teeth 
measures 71 millim., and the cephalothorax is 45 millim. long. 
The last avila tooth is directed transversely outward. I 
may also add that the posterior margin of the penultimate joint of 
the natatory legs bears two minute teeth. 
Goniosoma cruciferum is found in the Indian Ocean, the 
Malayan Archipelago, and in the Chinese and Japanese seas, 
having been collected at Bombay, Pondicherry, Singapore, 
Sumatra, Java, Amboina, Port Jackson, the Philippines, Hong-. 
kong, and Japan. 
57. GONIOSOMA AFFINE, Dana. (Pl. V. fig. 2.) 
Charybdis affinis, Dana, United States Expl. Exped., Crust. part i. p. 286, 
pl. xvu. fig. 12. 
Goniosowa affine, Alph. Milne-Edwards, Archives du Muséum Hist. 
Nat. 1861, t. x. p. 384. 
Two fine adult specimens were collected in the Mergui Archi- 
pelago, a male and a somewhat larger ova-bearing female. 
This species is still little known and very rare. As no ex- 
amples are to be found in the large collections of the Leyden 
Museum, the following remarks may be desirable. 
As Dana observes, this species is very similar to Goniosoma 
cruciferum, Fabr.; I will therefore compare it with the specimen 
of the latter anton is in the collection. 
The cephalothorax of the male is 233 millim. long and 37 . 
millim. broad, that of the female is 263 millim. long and 43 millim. 
broad ; the proportion of the breadth and the length of the cara- 
pace is therefore in this species quite equal to the same proportion 
in G. cruciferum. As regards the structure of the upper surface 
of the cephalothorax, both species agree very well with one 
another ; but the antero-lateral regions are more depressed and 
even a little concave in G. affine. The whole upper surface is 
covered with a close down of very short hairs, and marked with 
the same minutely granulated transverse lines which are found 
in G. cruciferum. 
The frontal teeth also closely resemble those of the latter 
species, but still more so those of G. guadrimaculatum (A. Milne- 
Edwards, op. cit. pl. xxxiv. fig. 8); they are scarcely acute, much 
