— 20 — 



additional furrows are observed, viz. one close at the latéral and 

 the lower part of the posterior margin , the other, being somewhat 

 shorter, considerably above and parallel with the latéral margin. 

 Seen from above, the front end of the carapace is rather convex, 



Fig. 17.— Front part of Fig. 18. — Front half of carapace 



anotadultfemalespe- and left eye of the same speci- 



cimen of T. insignis, men, from the side. 



from above. 



rounded ; seen from the side the end itself is turned vertically 

 upwards as a small conical process, and a rather high lamellar 

 crest runs from this process nearly to the gastro-hepatic groove. 

 The eyes are moderately small, black ; the eye-stalks have distally 

 at the upper inner corner a small tubercle not marked off at 

 the base. The peduncle of the antennulœ (in the female) is mo- 

 derately thick, tapering considerably from the base to the end; 

 the basai joint is distally produced into a lobe directed forwards 

 along the upper part of the inner and the inner part of the 

 upper side and terminating in a short spine; the outer distal 

 angle bears a short spiniform process ; the setœ of the joints may 

 be seen on the figure, but it must be added that the lower outer 

 flagellum has no tuft of setas at the base. The antennal squama 

 lias a denticle on the distal outer angle. Abdominal segments 

 without dorsal spines ; sixth segment is dorsally broadly and 

 fiatly excavated on its distal half, while along this part the limit 

 between the side and the upper surface is distinctly carinate. 



