COLLECTED BY CAPTAIN TOYNBEE. 183 
B. Seta articuli OfUennarum posticarum secumli setulow. 
CORYC-'EUS PELLUCIDUS, D. 
Collected in S. lat. 0° 30, W. long. 0° 20'. ; 
S. lat. 13° 43', W. long. 33° 55'. 
CORYC^TJS LONGICATTDIS, D. 
Collected in N. lat. 7° 15', W. long. 27^ 52'. 
I 
Oxcjea, Philippi. 
Onc^ea pyrieormis, n. s. Penrinae cephalothorax 5-articulatus, rolundatus. Maxilli- 
pedes mediocres, antennis posticis paululo majores. Abdomen 5-articulatum, stylis 
mediocribus. Styli caudales abdomine quadruplo, ct seta} caudales duplo breviores. 
This species is very nearly allied to A. obiusa, which it resembles in shape. The stylet 
however, are scarcely one-fourth, and the setae scarcely half as long as the abdomen, 
believe, however, that the length of these setae varies a little. At least, in one specimen, 
which in other respects resembled this species, the caudal Bet© were about a quart < r 
smaller. 
The cephalothorax is five-jointed, and tapers a little behind. The anterior antennae are 
four-jointed, the apical segment showing tract - of articulations. The set;.- arc of mode- 
rate length. The branches of the natatory legs are three-jointed. The claw of the 
maxillipeds is scarcely shorter than the preceding joint. The abdomen is five-jointed, 
the three posterior segments being distinct. The two outer spines of the caudal stylets 
are ciliated only on the posterior margin. 
This description applies to several specimens with bags of eggs attached to the upper 
side of the abdomen, as described by Dana. There were also some similar specimens 
without eggs, which, however, may also have been females. But in one case I found a 
couple connected together, which I suppose to have been male and female. The female 
had two bags of eggs, as usual. The smaller one, which I suppose to have been the male, 
clasped the anterior narrow part of the abdomen of the female with its anterior legs. 
These organs were larger than those of the female; and I am inclined, therefore, to think 
that this may be a sexual character. 
In establishing this genus, Professor Philippi makes no mention of the large eyes; and 
Dana therefore assumed that they were absent, and placed the genus among the Cyclo- 
pia. Philippi, however, expressly states (< Wiedemann's Arch.' 1813, vi.) that the speci- 
men was lost before the examination was completed ; and in all other respects Dana's 
genus Antaria so closely agreees with Oncaa, that I cannot but regard them as synony- 
mous, in which case the latter name, by the rule of priority, must be retained. 
Neither Philippi nor Dana, who alone has described any species belongin 
genus, mentions the males ; but the two sexes are probably alike. 
Several of the specimens carried bags of eggs. 
Collected May 17, 1858. S.lat. 0° 40' ; W. long. 0° 20'. 
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N.lat. 7° 15'; W. long. 27° 52 . 
S. lat. 40° 53'; E. long. 45° 22'. 
PI. XXIX. fig. 24, x 30; fig. 25. abdomen, seen from above, x 30. 
2b2 
