88 DR. G. S. BRADY ON MTODOCOPA OBTAINED 



single specimen which I possess was taken many years ago by Dr. Coppinger, of 

 H.M.S. ' Alert,' in Dundas Strait, N.W. Australia. 



Cypridina castanea, n. sp. (Plate XVI. figs. 1-4.) 



Male. — Shell corneous, flexible, dark brown, as are also the limbs of the animal. 

 The rostrum is bordered by a thin scale-like flange, which is strengthened below by 

 several stout spines ; the convexity of the sub-rostral cleft has a fringe of numerous 

 slender spines, which are long in the middle of the series and gradually smaller 

 towards the ends ; the shell-surface near the rostral angle has also an elevated hump to 

 which are attached a number (about fifteen) of long, rigid seta3 (fi-^. 1). Masticatory 

 process of the mandibular foot bifid and bearing a long lateral seta (fig. 2). The 

 antennules have two long apical setae and several small sensory ones, and to two of the 

 smaller of these are attached circular, saucer-shaped disks. The distal extremity of the 

 first maxilla (fig. 3) bears numerous ciliated setae, and four very stout spine-like teeth 

 M-hich have spinulose margins. Caudal laminae (fig. 4) provided with nine equidistant, 

 slender, curved, and denticulated ungues, the last two of which are very long, the rest 

 gradually decreasing in length to the first. Length of the shell about 7 raillim. 



One example only of this species was taken by the ' Challenger ' Expedition in 

 a "deep haul" from the Atlantic, lat. 32° 41' N., long. 36° 6' W., depth 1675 

 fathoms, 6th May, 1876. The specimen was much damaged, and neither the shell nor 

 the soft parts were in a condition to be accurately examined. Provisionally, however, 

 it may be referred to the genus Cypridina, though some of the characters show an 

 approach to Philomedes. 



Cypridina bairdi, G. S. Brady. (Plate XVI. figs. 22, 23.) 



1865. Cypridina bairdii, G. S. Brady, " On new or imperfectly known species of Marine Ostracoda," 

 Trans. Zool. Soc. vol. v. p. 387, pi. Ixii. figs. 7 a-m. 



Of this species 1 have seen no specimens other than those on which the original 

 description was founded. The squamous outgrowths of the shell in the neighbourhood 

 of the beak (figs. 22, 28) are, however, somewhat similar to those of C. castanea, with 

 which the soft parts also agree so far as they have been examined. It is probable 

 that a fuller knowledge of the two forms may show other points of resemblance. 



G. bairdii was taken in the tow-net, off Pescadores, China, by the late Mr. A. Adams. 



Cypridina japonica, G. S. Brady. 

 1865. Cypridina japonica, G. S. Brady, loc. cit. p. 386, pi. Ixii. figs. 8 a-d. 



This would appear, from the imperfectly preserved specimen in my collection, to be 

 rightly referred to the genus Cypridina. 

 Collected in Japan by Mr. A. Adams. 



