432 MR. F. CHAPMAN ON SOME 
and from the dredgings off Tutanga, at 50-60 and 200 fathoms 
(David coll.). 
BytHOCYTHERE, G. O. Sars. 
BYTHOCYTHERE ARENACEA, G. S. Brady. 
Bythocythere arenacea, G. S. Brady, 1880, Rep. Chall. Exped., Zool. 
pt. iii. p. 142, pl. xxxiii. figs. 3 a-g. [B. arenosa on plate. ] 
This species was described by Dr. Brady from specimens 
obtained at Torres Strait. 
It is represented by one imperfect valve, from Funafuti, from 
the sand of the 1st boring (Sollas), near the surface. 
BYTHOOYTHERE ARMATA, sp. nov. (PI. 37. figs. 6 a, b.) 
Carapace elongated, seen from the side oblong; height equal 
to more than half the length; anterior extremity rounded at 
the ventral angle, sloping backwards toward the dorsal angle ; 
posterior extremity tapering, and terminating in a blunt process 
towards the dorsal angle. Dorsal edge slightly convex and 
sinuous; ventral straight. The antero-ventral border is armed 
with three blunt spines. Surface of carapace produced near the 
middle of the lower third into strong salient ale. A surface 
ornamentation of polygonal pittings nearly covers the valve, 
excepting where the surface is relieved along the ventral border 
by two parallel ridges. Length of carapace ‘77 mm. 
This form to a certain degree exhibits characters pertaining 
to two known species of Bythocythere; in lateral outline it 
clearly approaches B. pumilio*, and in the size and position of 
the lateral ale it somewhat resembles B. veliferay. 
This species occurred at Tutanga at 200 fathoms (David coll.). 
Srotton IT. MYODOCOPA. 
Family CYPRIDINIDA. 
SARSIELLA, Vorman. 
SARSIELLA ScuLPTA, G. S. Brady. 
Sarsiella sculpta, G.S. Brady, 1890, Trans. R. Soc. Edinb. vol. xxxy. 
p. 516, pl. i. figs. 17-20. 
This species has been recorded previously from New Caledonia 
* G. 8. Brady, 1880, Rep. Chall. Exped., Zool. pt. iii. p. 142, pl. xxxiii. 
figs. 4a-d. 
1 Id. ibid. p. 148, pl. xxxiil. figs. 5 a-c. 
