96 



just below or a little before the three distal teeth of the upper border. The characteristic lateral 

 dilatation of the rostrum agrees with Dana's figure bb\ it is like a roof, below which the eyes 

 may be concealed. The outer orbital angle is spiniform, acute, but this spine is much smaller 

 than the supra-orbital spine; between the latter and the orbital margin the carapace bears 5 

 or 6 transverse winkles. Antennal spine small, obtuse. Antero-inferior angle of carapace rounded. 

 A longitudinal ridge or carina runs near and parallel with the lower border of the carapace. 



In the adult species the spine of the 3"' abdominal tergum extends to the middle or to 

 just behind the middle of the 4"'. Like in CJilorotocus spinicauda de Man the abdominal pleura 

 are spinose in the male, hardly so in the female. In the male the postero-inferior angle of the 

 i^' pleuron is produced into a long spine, that is directed backward, while the anterior 

 an^le is rounded and the lower edge slightly concave-, the pleura of the 4 following somites 

 end inferiorly also in a spine, which is smaller than that of the i^'; there is a strong spine, 

 finally, at each angle of the posterior border of the 6"^ somite, which is half as long as the 

 somite itself. In the female the postero-inferior angle of the i^' pleuron is obtuse, not spiniform, 

 the lower angle of the 2^^ is subacute or even sometimes also obtuse, but those of the 3 

 following .somites terminate inferiorly in a short spine like in the male and the 6''' somite is, 

 like in the latter, armed with two strong spines posteriorly. D.\na's figure 6« represents probably 

 a female without eggs, but it is no doubt inaccurate, for there is no spine at the postero- 

 inferior angle of the 6"^ somite and the postero-inferior angle of the i^' pleuron appears acute. 

 Telson flattened above, with 3 pairs of small dorso-lateral spinules at subequal distances from 

 one another and two pairs of spinules at the tip. Outer uropods as long as the inner and 

 nearly as long as the telson. 



Cornea larger than the rest of the eyestalk, a small black ocellus seems to be present, 

 though entirely .surrounded by the cornea. 



Antennular peduncle reaching to the middle of the rostrum, 2"'' and ^^^ joint small, subequal, 

 stylocerite acuminate, reaching almost to the middle of 3'"'^ article or to the distal extremity of 

 2""^; flagella of equal length, in the male one and a half, in the female just as long as the 

 carapace, without the rostrum, proximal fifth (third) of outer flagellum thickened. 



Spine at the outer lower angle of 2"*^ joint of antennal peduncle reaching to the middle 

 of the eyes, when the stalks are stretched forward, somewhat compressed dorso-ventrally, slightly 

 contorted and acute ; peduncle stout, almost as long as that of the upper antennae, flagellum 

 a'/a-tinies as long as carapace and rostrum combined. Scaphocerite as long as or a trifle longer 

 than the rostrum, acute tip slightly curved inward; the three teeth on the outer margin gradually 

 increase in size distally, between the teeth and for a .short way before the anterior the outer 

 margin appears obtusely crenulate in adult specimens, less distinctly so in younger ones. 



Mandibular palp 3-jointed, 2°^ joint transversely oval, broader than long and shorter 

 than the 1^' and the 3'''', the arched margins setiferous; 3^^ joint as long as P', twice as long 

 as 2"<i, a little more than twice as long as broad, fringed with long setae at the rounded tip 

 and the (inner?) margin. Molar process cylindrical, the truncate, yellow brown coloured tip with 

 3 or 4 obtu.se lobes; distal edge of incisor process 6-dentate, the teeth acute, the four inner 

 of equal size and half as long as the two at the angles. 



