710 T. R. R. STEBBING. 



As the present collection includes only two of the small males, this identification may 

 remain open to some question. The head has the incurved, broadly rounded front described 

 by the above-named authors, but the eyes which they speak of as ' evanidi,' are rather large 

 and though dull fairly conspicuous. The first antennae are well separated at the base, eight- 

 jointed, equal in length to the much more slender, nine-jointed second pair. The anterior 

 margin of the first peraeon segment is not so markedly trisinuate as figured in the Tidsskrift, 

 and the telsonic segment there spoken of as sulcate in the middle shows in our specimens 

 a slight transverse depression near the base but no longitudinal furrow. It is, as Schiodte and 

 Meinert say, a little wider than the fifth segment of the pleon, but this is in contradiction 

 to the character which they give of their sub-family Cymothoinae (op. cit. p. 222), in which 

 they say that the pleon has the fifth segment broader than the terminal one. Their statement 

 that the uropods are much shorter than the telsonic segment is quite opposed to their figure, 

 which shows them not at all shorter. In our specimens the difference in length is very small. 

 The rami of the uropods agree with the description by the joint authors, both being obtuse-ended, 

 the outer a little the longer, slightly curving inward, the inner a little the broader. 



The male appendage of the second pleopods is stiliform, reaching a little beyond the very 

 broad rami. 



Colour, pale, with dark dots minute and distant, little affecting the general appearance. 



Length of one specimen 10 mm., breadth 3-75 mm., of the other 8 by 4 mm. Schiodte and 

 Meinert give the length 11 '5 — 14 mm. The breadth, 'duplo longior quam latior,' does not 

 correspond exactly with the figure, which is more than twice as long as the greatest breadth, 

 so that the relation of length to breadth may be taken as to some extent variable. 



Locality, Hulule, fi-om ' Gills of large Parrot-fish.' 



Fam. Sphaeromidae. 



References to the literature of this family, with some remarks on the still rather obscure 

 boundaries of the included genera, are given in the Proc. Zool. Soc. London, p. 552, 1900 ; in 

 Willey's Zoological Results, Part 5, p. 643, 1900 ; and in South African Crustacea, Part 2, 

 p. 64, 1902. From the Malay Peninsula Mr W. F. Lanchester has recently described a new 

 species under the name Sphaeroma felix, in Proc. Zool. Soc. London, p. 879, pi. 35, fig. 10, 

 1902. The character of the raaxillipeds is not specified. 



Gen. Exosphaeromu , Stebbing. 



Exosphaeroma, 1900, Stebbing, Proc. Zool. Soc. London, p. 553 ; 1902, South Afncan 

 Crustacea, Part 2, p. 64. 



Sphaeroma serratum (Fabricius), for which the genus Spliaeronia was instituted by Bosc, 

 has the maxillipeds differently constructed from those of almost all the later species, in 

 regard to which these appendages have been described, for, while in those species the fourth, 

 fifth and sixth joints are all produced into conspicuous lobes on the inner side, in the 

 original species there are no such lobes. The species now to be noticed has the fourth and 

 fifth joints very slightly lobed, but the sixth not at all. It therefore occupies an intermediate 

 position between Exosphaeroma and Sphaeroma, yet so much nearer to the former than to 

 the latter that it cannot well be left in the genus to which Dana assigned it. 



