REPORT ON THE CIRRIPEDIA. 1^1 



Scalpellum indicum, n. sp. (PI. VII. fig. 1). 



Valves thirteen ; covered by a chitinous and villous membrane. Carina simply and 

 very strongly bowed, with the umbo al the apex, and with a flat roof not bordered by 

 rul^es. Upper latus quadrangular. Umbo of the carina] latus at the upper extremity of 

 the carinal margin. Peduncle rather short. 



e> 



is an niliali; 



Of this interesting little species only a single specimen was taken, it is 

 tant of shallow water, but it resembles the true deep-sea species both in regard to the 

 form of the carina and the carinal latus. 



The capitulum is covered by membrane, which causes the margins of the differenl 



valves not to lie everywhere distinctly visible. This membrane is furnished with sln.it 

 woolly hairs. The shape of the capitulum is elongate, the undermost half of the carinal 

 side runs parallel with the rostral side. The surface on both sides is almost flat. The 

 valves of the lower whorl are small. The rostrum is absent and the total number of the 

 valves is thirteen. 



The scutum is trapeziform and elongate; its occludent and lateral margins run 

 parallel to each other, and are at right angles to the basal margin. The umbo is at the 

 apex, which is slightly produced. The tergal margin is a little hollowed oul . and is shorter 

 than the lateral margin. 



The tergum is oval, with the apex and the angle formed by the scuta! and carinal 

 margins pointed and slightly produced. The occludent margin is almost straight, and 

 forms the continuation of the occludent margin of the scutum. 



The carina is elongate, simply, rather strongly bowed, with the umbo at the apex. 

 Its roof is flat and is not bordered by distinct ridges, for it passes almost imperceptibly 

 into the very narrow sides of the valve. The breadth of the roof of the carina is not very 

 considerable; its basal portion is triangular, and penetrates between the two carinal 

 margins of the carinal latera. 



The upper hit >is is quadrangular, and has the umbo at the apex. The scutal margin 

 is straight, and is the longest of the four. The tergal and basal margins have almost 

 the same length, whereas the first is nearly straight, the second is distinctly convex. 

 The carinal margin is straight also, and a little shorter than the tergal margin. 



The rostral latus is short but very broad. Its scutal and basal margins run nearly 

 parallel to each other. Its umbo is at the base of the occludent margin of the scutum, 

 where the rostral margins meet one another. The place where the umbo is is slightly pro- 

 tuberant beyond the rostral margin. 



The infra-median latus is small, triangular. Its umbo is at the apex, which is slightly 

 turned forward. 



The carinal latus is almost triangular, which is the consequence of the lateral margin 

 forming almost the continuation of the basal margin. The carinal margin is very convex, 



(zoor.. chaix. exp. — part xxv. — 1883.) Bb 16 



