67 



and delicate. Branchise fusiform, almost linear, stoutish, moderately 

 long ; central gland not quite so wide as the sheath, irregularly fol- 

 liculated and granulated, green below and dark blue above ; outer 

 surface of the papillse above pale blue, below pale green ; a few 

 yellow freckles in front ; tips strongly capped with rich orange-red, 

 banded below with a rim of bright yellow : the extreme points are 

 colourless and pellucid ; they are arranged in ten transverse, rather 

 distant rows of five or six papillse in each row ; the four anterior 

 rows are rather closer together than the rest, and are divided from 

 them by a widish space ; the front row contains only two papillse, 

 placed as far forward as the dorsal tentacles. Foot tinged with 

 green, narrow, slightly lobated in front, with the lateral angles con- 

 siderably produced and rather obtuse." 



This interesting individual was dredged by me in Weymouth Bay, 

 on a rough bottom in six fathoms water, and sent to Mr. Albany 

 Hancock in the latter part of September 1858. In the note accom- 

 panying this description, Messrs. Alder and Hancock remark, that 

 " as Montagu's description of this very beautiful species is exceed- 

 ingly short and incomplete, and as no one appears to have captured 

 it since his time, it has been thought desirable to redescribe it. How- 

 ever, there can be no doubt that this is Montagu's species, and its 

 rediscovery, which is due to Mr. Thompson, of Weymouth, is of 

 great interest." 



LoMANOTUs PORTLANDicus, mihi, n. sp. 



" Body upwards of an inch and three-quarters long, depressed, 

 quadrilateral, tapering a little backwards, pellucid white, tinged 

 with browriish yellow on the back, in front pale orange-red. Head 

 rounded in front, covered with a distinct veil, bearing on each side 

 two rather long tentacular processes, the outer ones the longer. 

 Tentacles set well forward and placed apart, elliptical, tapering to a 

 pretty fine produced and truncated apex ; closely laminated on the 

 upper portion, which is of a pale yellowish colour, with numerous 

 fine laminae much inclined backwards and tlownwards, and divided 

 in front by a narrow line ; the lower portion, colourless and smooth, 

 is contained within a tall, narrow sheath, of an orange-red colour 

 above, with the margins divided into six finely-pointed filaments, 

 those in front shortest. The sides of the back are produced into 

 wide pallial margins, which, commencing in front of the bases of the 

 tentacular sheaths, are continuous behind the termination of the tail ; 

 these margins are deeply and symmetrically undulated, forming on 

 each side four loops, which meet along the medio-dorsal line, and are 

 fringed with numerous short, pointed, orange-red papillee tipped with 

 white ; the papillse die out towards the tail, and are reduced in 

 size on the part of the loop next the foot. Foot while, with the 

 margins nearly parallel, obtusely pointed behind, in front bilobed 

 and deeply grooved, with the anterior lamina notched in the centre ; 

 the lateral angles much produced and recurved." 



I obtained this species on two occasions. The first specimen was 

 obtained by me whilst dredging in Weymouth Bay, on the 15th of 



