BARNACLES FROM DEEP-SEA CABLES. 301 



Measueement of Type. 



Height of capitulum . . . . 24 mm. 



Breadth of capitulum . . . . 13 „ 



Thickness of capitulum . . . . 6*5 „ 



Length of peduncle . . . . 12 „ 



Diameters of peduncle . . . . 6 x 4 „ 



Type-specimen. Crustacea, 9322/10, Zoological Survey of 

 India (Ind. Mus.) 



Locality. 10° 22' 30" (?S.) 3 long. 120° T 30" E. (130-500 

 fathoms). 



The species is an isolated one, intermediate between the genus 

 2Iegalasma, Hoek, which it resembles in the structure of its carina, 

 and Poecilasma, Darwin, with which it agTees in other points. On 

 the whole it seems to be most nearly related to P. ~kaempferi, Dar- 

 win, a Japanese species with local races in many seas. It is easily 

 distinguished, however, from all of these by its large size and by 

 the form of its carina. 



The type-specimens were attached to the peduncle of TLetera- 

 lepas gig as : a considerable number of specimens were found thus 

 associated with a group of that species from a telegraph cable. 

 Other, smaller examples were fixed to the capitulum of the type of 

 Scalpellum nudipes from the same locality. 



Description of Plate IV. 



Fig. 1. — Type-specimen of Scalpellum (S milium) nudipes, sp. 



nov., with young specimens of Poecilasma (Glypte- 



lasma) gigas attached to its scuta. 

 Fig. 2. — Type-specimen of Scalpellum sociabile var. parviceps, 



var. nov. 

 Fig. 3. — Type-specimen of Scalpellum persona, sp. nov. 

 Fig. 4. — Type-specimen of Poecilasma (Glyptelasma) gigas, sp. 



nov. 

 Fig. 5. — Specimen of Ileteralepas gigas (Annandale) from the 



Java Sea. 



All the figures are of the natural size. 



Description of Plate V. 



Scalpellum nudipes, sp. nov. 



Fig. 1. — Part of 4th cirrus (greatly enlarged). 



Fig. 2. — Body from behind, showing anal appendages and base of 



6th cirrus (x4). 



Fig. 3. — First cirrus (x 2). 



Fig. 4. — Mouth-parts in lateral view (x 4) . 



Fig. 5. — Immature male (x8), 



Fig. 6. — Capitulum of adult male (x 8). 



U. A. Soc, No. 74, 1916. 



