188 DE. a. S. BKADY ON NEW OR 



branch of the nntenna (fig. 23) non-plumose, but bearing a series of about twelve 

 lanceolate spines; secondary branch of the antenna three-jointed, with one tormina! 

 seta and one jAumose seta on the first joint; mandibles as in Ctjpridina; caudal 

 laminae armed with six strong curved ungues, the first of wliicli is strongly pectinated. 

 The locality of this species appears to have been lost. 



Genus Codonocera, gen. nov. ' 

 (}. Heterodesmus Brady 2.) 



Shell flat dorsally, very convex ventrally, with a well-marked anterior beak and 

 antennal notch, and at the posterior extremity a wide rounded protuberance (PI. XXII. 

 fig. 1). The antennules bear at their apices, in addition to the ordinary sensory setae, 

 two shorter filaments (figs. 8, 9), which are dilated in the middle and divided distally 

 into two branches, one of which is bifurcate, the other shorter and terminating in a 

 bunch of six bell-shaped suctorial disks ; secondary branch of the antenna (fig. 3) 

 provided with a very large and powerfully muscular hand, the claw of which is 

 marginally nodulated ; mouth-organs as in Philomedes; postabdominal laminae (fig. 7) 

 with only three ungues. 



Codonocera ceuenta, sp. nov. (Plate XXII. figs. 1-10.) 



Shell of the male, seen from the side (fig. 1), subquadrate, height equal to two-thirds 

 of the length ; anterior extremity rounded both above and below the notch ; beak 

 short and sharp; antennal notch moderately deep; posterior extremity wide, obliquely 

 subtruncate, with a wide angular notch in the middle ; dorsal margin straight, sloping 

 steeply in front from its angulated extremity, rounded off posteriorly ; ventral margin 

 very boldly and evenly arcuate : seen from above (fig. 2) regularly ovate, widest in the 

 middle, twice as long as broad : extremities subacuminate. Shell smooth, chitinous, 

 pale-coloured, irregularly marked with black, stellate pigment-patches of various size, 

 and with some pale clouded streaks near the centre of tlie valves. Length 2-8 mm. 

 First swimming-seta of the antenna (fig. 3) short, non-plumose and spinous on the 

 outer margin ; secondary branch (fig. 3) very large, the hand armed with two strong 

 spine-like setas, wliich oppose the terminal claw; claw sigmoidally bent, nodulated on 

 its inner edge and round the base of the outer edge ; vermiform limb very sparingly 

 setiferous, its apex armed with four small spines on the outer and one on the inner 



' KMCwv, a bell ; Kipns, a horn. 



^ G. S. Brady : " On now or imperfectly-known Species of Marine Ostracoda," Trans. Zool. Soc. Loud, 

 vol. V. p. 387. 



