REPORT ON THE CIRRIPEDIA. 91 



Cruise of H.M.S. "Triton."— Station 8, August 22, 18S2; lat, G0 C 18' K, lung. G 1 :/ W.j 

 depth, G40 fathoms; bottom, mud; temperature,— 1 0, 1 C. Station 9, August 2:3, 1882; 

 lat. G0° 5' K, long. G° 21' W., depth, GOS fathoms ; bottom, mud ; temperature,— 1"-1 <'. 



Observations. — In both cases the specimens were found attached to the legs of 

 Nym/phon robustum, Bell. However, we must not consider them as parasites of this 

 species ; the slowly moving legs of the Pycnogonid arc for the Cirriped what branches of 

 Bryozoa, Corals, &c, are for other species of Scalpellum. 



This species comes very near to Scalpellum angustum, G. 0. Sars. However, it is 

 different in the shortness of the rostrum, which is covered on both sides by the rostral 

 latera, and also in the form of the scales of the peduncle, which are placed at considerable 

 distances from one another, and do not cover each other as roof-tiles do (" squamis sat 

 magnis, niveis, vix imbricatis tectus," G. 0. Sars; see also the figure of Heller, loc. <//.. 

 Taf. iv. figs. 13, 14). The shape of the valves of the lower whorl is also different from 

 those as figured by Heller. From Scalpellum striolatum, G. 0. Sars, and Scalpellum 

 carnation, G. 0. Sars, it is easily distinguished by the elongate form of the capitulum 

 and the peduncle, and also by the shape of the infra-median latus. 



Scalpellum rubrum, n. sp. (PI. IV. fig. IS). 



Valves fourteen, smooth, beautifully white and red coloured. Carina simply and 

 stronglv bowed, with a slightly convex roof and with the umbo at the apex. Rostrum 

 triangular, distinct. Upper latus quadrangular, large. Valves of the lower whorl small. 

 Infra-median latus triangular. Peduncle with very prominent ridges. 



This very small species is represented by a single specimen. 



The capitulum is flat, rather broad, and consists of fourteen valves. These are not 

 covered by distinct membrane ; those of the lower whorl are small, those of the upper 

 part comparatively large. 



The scutum has much the ordinary shape. Its occludent margin is arched, and forms 

 with the tergal margin a triangular portion which projects over the tergum. 



The tergum surpasses the scutum in area. Its carinal margin is much arched, it> 

 occludent margin almost straight. 



The carina is well-developed, simply and rather strongly bowed ; the roof is not quite 

 Hat, but laterally slightly convex. The sides are only slightly developed in the uppermosl 

 part. 



The upper latus is quadrangular; the angle at the apex between the scutal and 

 tergal margins distinctly projects over the scutum. 



The rostrum is small, yet distinct. It has a triangular shape, its base bi 

 directed towards the peduncle. 



