On Marine Polyzoa. 69 



secondaries suffused with greyish fuliginous, with reddish- 

 brown veins, fringe between the veins cream-coloured ; a few 

 indistinct, confused, subraarginal whitish spots, similar to 

 those on the external area of the primaries : thorax whitish at 

 the sides, in front, and along the centre, with black tufts 

 behind the tegulse ; abdomen with blackish sides (except 

 upon the last two segments) and a dorsal longitudinal blackish 

 stripe ; pectus black ; tarsi sandy whitish ; venter sandy 

 yellowish. Wings below pale sandy brown ; the markings less 

 distinct than above. Expanse of wings, <$ 4 inches 2 lines, 

 ? 4 inches 6 lines. 

 Darjiling (Lidderdale) . Type B. M. 



Hepialidae. 

 15. Hepialus marcidus, sp. n. 



Primaries above either pale buff or testaceous, mottled all 

 over with greyish brown ; a broad interrupted central belt, 

 spotted with little transverse dashes of the ground-colour, 

 and with blackish spots across its centre, grey or greyish 

 brown, sometimes becoming gravel-yellow upon the inner 

 margin (where it is broken up into three or four unequal 

 spots) ; a discal band, either grey or gravel-yellow, spotted in 

 the centre with black; margin grey, sinuated internally : secon- 

 daries semitransparent greyish brown : body dark greyish 

 brown, with testaceous anus; thorax sometimes reddish. Under 

 surface greyish, the markings obsolete. Expanse of wings, 

 $ 1 inch 9 lines, ? 2 inches. 



Darjiling (Lidderdale). Type B. M. 



In the examples before me the more brightly coloured form 

 is the male, the greyer form the female ; it is possible, how- 

 ever, that much variation of tint may occur in individuals of 

 both sexes. 



[To be continued. 



X. — Contributions towards a General History of the Marine 

 Polyzoa. By the Rev. Thomas Hincks, B.A., F.R.S. 



[Plates IX., X., XI.] 



In the present and following papers I propose to describe and 

 figure a large number of marine Polyzoa from various parts 

 of the world which have hitherto, I believe, escaped notice, 

 and thus to offer a contribution towards that general history of 

 the class which still remains to be written. Et is by no 



