CYNTHIA CLAtlDICANS. 81 



the laminae are arranged transversely, and their edges 

 appear at the surface like branched tubes which are 

 beset with a few large papillae. 



The reproductive organs (PI. XXXI, fig. 4) are 

 large, irregularly-rounded masses ; that on the left 

 side is composed of a congeries of rounded ovigerous 

 lobules having in the interstices clusters of male caeca. 

 On the right side there is a similar mass of ovigerous 

 lobules and sperm -vesicles lying above the looped 

 portion of the intestine ; and between this mass and 

 the endostyle, overlying the dorsal limb of the loop, is 

 a dense mass of male caeca, which are large, short, 

 obtuse, and united in pairs. The oviduct and vas 

 deferens are short and united so as to appear as a 

 single stoutish tube, but open through separate nipple- 

 like orifices ; that of the oviduct has the orifice four- 

 cleft, and is somewhat larger than the male outlet. 

 These ducts extend from the ventral margin of the 

 genitalia, and stretch towards the excurrent orifice at 

 some little distance on each side of the anus. 



Cynthia daudicans appears to be a southern form 

 and has not yet been found on the North and East 

 coasts of Great Britain. There may be some doubt 

 whether the locality " North of Ireland ' given by 

 Mr. Thompson is correct, as the species is not in his 

 collection. Specimens of the allied form C. squamulosa 

 Aid. were found in it, and without name but labelled 

 " Strangford and Belfast Loughs." This latter species 

 (which was undescribed at the time) is not noticed in 

 his Catalogue, and it is probable that he mistook it for 

 C. daudicans. 



3. Cynthia squamulosa Alder. 



(PI. XXX, fig. 3 ; PL XXXI, figs. 6-8 ; PL XXXII, 



figs. 1 and 2 ; PL XL, fig. 7 ; PL XLVIII, fig. 5 ; 



and figs. 52 and 53 in text.) 



Cynthia squamulosa ALDER [MS. sp. in Ansted's Channel 

 Isl. (1862), p. 219 ;] in Ann. Nat. Hist. (3) XI [1863], p. 

 161; [and in Rep. Brit. Assoc. for 1866 (1867), p. 208]. 



ii. 6 



