56 MISS MAT E. BAINBKIDGE ON 



of the ovisacs ? The muscular system will be described in another paper on the 

 attachment of this parasite. 



The Male. — Males are found attached to different parts of the female, sometimes 

 on the cephalothorax or on the postabdomem and in one case on the dorsal 

 surface. They are minute and easily detached, holding on by means of the claws 

 of the second maxillae. In life they are semi-transparent and show no distinct 

 segmentation. A wide coiled tube, the testis (PI. 10. fig. 29, T), fills up most 

 of the body ; there is also a broad intestine (fig. 28, I.) with sacculated walls 

 which narrows posteriorly and opens where the carapace curves inwards («). 

 The intestine contains numbers of brownish-green cells ; these are probably the 

 excretory cells of Claus and are mentioned also hy Wierzejski * in his description 

 of the males of Penella varians (?). Clear oil or fat-globules are present in 

 numbers in the digestive tube. Beneath the dorsal surface in the median line 

 is a patch of red pigment (figs. 28, 29, Pg.), and there is a less conspicuous 

 patch near the base of the first maxiilipeds. At the base of these appendages 

 on each side is a small coiled slightly raised structure, which looks like the 

 opening of a gland (P.). Kurz f, in his description of the male of Anchorella 

 emarginata, a species closely allied to A. rugosa, mentions two protrusible papillae, 

 at the extremities of which are the genital openings (fig. 11, gp.) and which are 

 situated behind the "second maxiilipeds" (first maxiilipeds). It seems doubtful, 

 however, from the position of these openings in A. rugosa whether they can be 

 genital. 



The description given by Kurz of the appendages of the male of A. emarginata 

 (p. 401, figs. 11, 27, 2S) seems to correspond closely with those of this species. 



The Second Antenna? (fig. 31) are much like his figure (fig. 28, a 2 ), but he does 

 not mention two delicate setae on the paddle-shaped branch. 



The Mandibles (PI. 10. fig. 30). — The same as in the female, but much smaller 

 and more slender; the teeth do not appear to be quite so sharply pointed as in 

 Kurz's figure (fig. 31) of the mandible of A. emarginata. 



The First Maxilla} (fig. 32).— See Kurz (figs. 27, 28, mx.). 



The First Maxiilipeds (PL 11. fig. 36). — Very stout and bearing strong claws. 



There is a small tooth on the claw, which is doubled in and seems to work on 



a pad covered with bristles. On the stout basal part of the appendage is a 



seta. 



mm. 



Length of male of A. rugosa "86 



„ „ A. emarginata - 43 



Mr. Bassett-Smith (op. cit. 1S99) considers A. emarginata to be synonymous 

 with A. rugosa, but the two species although closely allied seem to be quite 

 distinct. 



* " Ueber Schmarotzerkrebse von Cephalopoden," Zeit. wissen. Zool. Ed. xxix. 1877, 4 Heft, p. 5G7, pi. xxxii. 

 fig. 1, K\ 



t "Studien ubcr die Lcrnacopodideu," Zcit. wissen. Zool. Bd. xxix. 1S77, p. -J02, fig. 11, g.p. 



