364 MR. G. S. BRADY ON NEW OR IMPERFECTLY 
1. Batrpia BosQuETIANA, n. sp. (Pl. LVIL. fig. 5, ae.) 
Carapace reniform, much compressed. The dorsal margin is arched, highest a little 
in front of the centre; ventral margin gently sinuated. Extremities rounded, the pos- 
terior slightly narrowed. Surface smooth, white, with opaque patches, sparingly beset 
with small papillz. Lucid spots four, rather large and crowded together. Dorsal out- 
line compressed, oblong-oval, with pointed extremities. 
Length zo in. (635 mm.). 
Hab. Atlantic Ocean, 470 fathoms (Commander Dayman’s soundings). 
In its lateral aspect this species is strikingly similar to Cytheridea papillosa. The 
lucid spots are, however, differently arranged, and the structure of the hinge-joint 
distinctly shows it to belong to the genus Bairdia. 
2. Barrpia AMYGDALOIDES, n. sp. (PI. LVIL fig. 6, ac). 
Carapace broadly ovate, convex, tapering to a point posteriorly, rounded in front. 
Dorsal margin boldly arched, ventral slightly convex. Seen from below, the outline of 
the carapace is oval, rather narrowed posteriorly. Surface smooth. 
Length 3/5 in. (‘78 mm.). 
Hab. Australia, 17 fathoms (Prof. Jukes’s soundings). 
I do not feel quite certain that this may not be a variety or the young of B. fusca 
or B. ovata. 
3. Bairpia ovata, Bosquet. (Pl. LVII. fig. 7, a—c.) 
Cytheridea ovata, Bosquet, Crustacés Fossiles du Limbourg (1853), p. 63, pl. 5. fig. 6, a—d. 
Carapace ovate. Dorsal margin boldly arched ; ventral nearly straight, with a slight 
median sinuation. Anterior extremity broad, well rounded ; posterior narrow, rounded. 
Dorsal aspect ovate. Surface white, smooth or slightly hairy. 
Length 35 in. (1 mm.). 
Hab. Abrolhos Bank. 
4. Bairpia Fusca, n. sp. (Pl. LVII. fig. 9, a—d.) 
Carapace subtriangular, about once and a half aslongas broad. Evtremities rounded ; 
the posterior scarcely, or not at all, beaked. The dorsal margin is boldly arched, and 
very high in the middle; the ventral is slightiy sinuated. Seen from below, the cara- 
pace is oval, with pointed extremities. Right valve overlapped by the left, as in B. sub- 
deltoidea. The surface of the valves is finely punctate, and covered, more especially on 
the posterior half, with long brown sete. Colour brown. Lucid spots well marked 
(when the valves are denuded), forming a rosette of one central and six encircling 
spots. 
Length 35 in. (84 mm.). 
Hab. Australia. 
