386 MR. G. 8S. BRADY ON NEW OR IMPERFECTLY 
valves covered with irregular, sinuous, projecting lamin, the free edges of which are 
variously cut and cleft. 
Length zo in. (63 mm.). 
Hab. Australia, 14 fathoms. 
7. CYTHEREIS SPINOSISsIMA, n.sp. (PI. LX. fig. 10, a-e.) 
Valves compressed, oblong-oval, twice as long as broad. Dorsal and ventral margins 
nearly parallel, slightly arched. Anterior margin obliquely rounded, bearing five or six 
large, blunt teeth. Posterior margin narrower, rounded, bearing about eight blunt 
teeth and one very long pointed spine at the ventral angle. Dorsal aspect ovate, with 
irregularly dentated outline and tapering extremities. Surface of the valves beset with 
blunt processes, which are crowded together in irregular rows, producing a resemblance 
to the growth of a lichen or nullipore. 
Length 55 in. (1 mm.). 
Hab. Norway (Messrs. UM Andrew and Barrett's dredgings). 
This species approaches in general aspect C. lichenopora, Bosquet ; but the ventral 
aspect, instead of being marked with rows of excavations (as in C. lichenopora), bears 
several series of stout, sharp spines. 
Family CYPRIDINID. 
Genus Cypripina, Milne-Edwards. 
Eyes two; antennz two; feet two pairs. Abdomen terminated by a broad lamellar 
plate, armed with claws and spines. Carapace consisting of two distinct valves; pro- 
duced in front into a more or less prominent beak, with a subajacent hollow or notch 
facing the ventral margin. 
1. Cypripina saponica, n. sp. (Pl. LXII. fig. 8, a—d.) 
Carapace oval, obscurely pointed behind. Dorsal and ventral margins both well 
arched, the former most strongly. Anterior extremity broad and well rounded, with a 
large, acutely pointed beak; the underlying notch large, cuneate. Ventral profile 
oblong-oval, twice as long as broad, the notch forming a transverse, oblong depression 
at the anterior extremity. End view oval. Surface smooth, distantly and slightly 
pitted. Colour light buff, mottled with patches of white and brown. 
Length 75 in. (2°54 mm.). 
Hab. Japan. ‘Taken in the towing-net (Mr. A. Adams). 
2. Cypripina ELonGaTA, 0. sp. (Pl. LXII. fig. 9, a—d.) 
Valves oblong-oval, twice as long as broad, mucronate behind, flattened in front, 
Dorsal and ventral margins gently arched. Posterior extremity produced into a 
flattened, triangularlamina. Beak small, sharp, with arounded, shallow notch. Dorsal 
