Miscellaneous. _ 157 



acute, curved up at the tip ; alveolar plate of upper jaw narrow, with 

 a raised inner tfiargin, of lower jaw narrow, sharp-edged. Toes short, 

 well webbed to the end ; clawb 5 . 4, short, acute. Thorax ovate, very 

 convex, shelving- on the sides, with a bhmt and interrupted vertebral 

 keel. Vertebral plates in the j'oung as broad as long, front one 

 narrowed behind ; second, third, and fourth hexagonal ; fifth much 

 smaller, square. First, second, and third costal plates large, angular 

 above ; the fourth very small, square, only as high as the small fifth 

 vertebral. Marginal plates broad, hinder four much narrower, with 

 a serrated edge. Nuchal plate broad, well developed. All the discal 

 and upper part of the marginal plates in the young with a very large 

 punctate areola. Sternum flat, strongly keeled on the sides. Anal 

 shields small. Tail short. 



The general form is very peculiar, somewhat like Cuora ; but the 

 sternum is perfectly soHd, and there is no indication of any mobility 

 of the two lobes. The animal diff"ers externally in the head being 

 one-coloured, without any band over the eye. 



Orlitia borneensis. 



Cistudo borneensis, Bleaker. 



Hab. Borneo (Bleeker). 



I mentioned this specimen under Cuora amboinensis in the ' Suppl. 

 Cat. Shield Kept.' p. 21 ; but on reexamination I am satisfied that it 

 has no relation to that species. It is evidently the young of a very 

 large and solid species ; for even this young specimen is well solidified, 

 though there is an oblong groove (the remains of the opening of the 

 yelk-bag) in the central suture of the abdominal and preanal plates. 



Descriptions of three new Species of Crustacea parasitic on the 

 Cetacea of the N. W. Coast of America. By W. H. Dall, U.S. Coast 

 Survey. 



Genus Cyamus, Lam. 



Cyamvs, Lam. Syst. An. s. Vert. p. 166 j Bate & Westwood, ii. p. 80. 

 Larunda and Panopej^ Leach. 



Cyamus Scammoni, n. sp. — Male. Body moderately depressed, of 

 •an egg-ovate form ; segments slightly separated ; third and fourth 

 segments furnished with a branchia at each side ; this, near its base, 

 divides into two cylindrical filaments spirally coiled from right to 

 left ; at the base of each branchia are two slender accessory filaments 

 not coiled, quite short, and situated one before and the other behind 

 the base of the main branchia ; second pair of hands kidney-shaped, 

 with the carpal articulation halfway between the distal and proxi- 

 mal ends, and having two pointed tubercles on the inferior edge, 

 ■before the carpal joint ; third and fourth segments somewhat punctate 

 above, all the others smooth, the sixth and seventh slightlj' serrate 

 on the upper anterior edge, and without ventral spines. Colour yel- 

 lowish Avhite. Long. -70, lat. -39 in., of largest specimen. 



Female similar to the male in all respects, excepting in being a 



