112 



result being that their muscles are neai-ly parallel with the nierlian line. The caudal 

 stylets are situated far from each other, but close belund the posterior margin of the genital 

 area. The whole area and its surroundings are naked. 



MALE. Unknown. 



OVISACS. Tlu'ee oblong sacs have been found, their average length being like 

 that of the female. 



LARVA. Unknown. 



POST-LARVAL DEVELOPMENT. A pupa densely covered with hairs all over 

 is '22 mm. in length and 16 mm. in breadth. 



HABITAT. In the marsupium of a specimen of Gammarox)sis melanops G. 0. Sars, 

 taken by the author in the harbour of Messina in May 181)3, were found: one female, three 

 ovisacs and one pupa. (The Rev. Th. R. R. Stebbing has kindly determined the host; he 

 writes: »The specimen is imperfect, but appears to be Gammaropsis melanops G. 0. Sars«). 



REMARKS. It must be supposed that the ovisacs were laid by the small female 

 which was found together with them, and to which a spermatophore was attached, for the 

 host is so small that the parasite must of necessity be small too. So it appears that in this 

 respect this species is like S. vestifa, but there is this difference, among others, that the 

 trunk and the genital area are perfectly naked. 



7. Sphaeronella chinensis n. sp. 



(PI. II, flg. 6a— 6f; pi. Ill, fig. 1 a-1 c.) 



FEMALE. The only specimen found (fig. 6 a) was I'Ol mm. long and -88 mm. 

 broad; the head a little above medium size, the trunk globular. The base of the maxillae 

 and the part in fi'ont of the maxillipeds covered with hairs, as in the preceding species. 

 The trunk rather scantily furnished with most peculiar membranous hairs, the base of which 

 forms a very broad and flattened oval, and from this broad base the flattened hair increases 

 somewhat in breadth, whereupon it is lounded off rather abruptly, which gives the whole 

 hair almost the outline of an egg, the tapering end of which is cut oif. The genital area 

 has about the same shape as in S. vestifa, so it is longer compared with the breadth than in 

 the other species, and forms a short oval, but the larger part of it is solidly chitinised ; the 

 distance between the genital apertures is a little shorter than in S. vesHta, but their form 

 and direction are as in this species; the distance between the caudal stylets is of medium 

 length and about equal to their distance fiom the area. The area is provided "with mem- 

 branous hairs, which in several places form a covering as close as the »scales« in S. vestifa; 

 finally, the suiface extending fi-om the area to somewhat beyond the caudal stylets is furnished 

 with similar hairs; the greater part of these hairs are much narrower than those of the 

 trunk and also difi'erent in shape, the hair in its proximal part being of equal width and 

 then gTadually tapeiiug ends in a point. 



