— 47 — 



This new genus which is established on a single new 

 species, it not very valuable, but the fact that two pairs of 

 legs are elongate and developed as prehensile organs is so 

 interesting and so different from the structure of the other 

 genera, that the establishment of a genus is deemed nearly 

 necessary. 



T. oculata n. sp. — The upper front part of the cara- 

 pace shaped almost as in Nematobrach-ion boopis Calm., 

 being produced at the middle in a small and very short 

 triangle much broader than long and without any terminal 

 process, while the whole upper and the upper lateral part 

 of the front margin of the carapace is bent upwards. No 

 denticle on the lateral margins of the carapace. Eyes very 

 large, considerably higher than broad, divided by a feeble 

 constriction somewhat above the middle, but the upper 

 section nearly as broad as the lower. Antennulae with the 

 two distal peduncular joints long and slender in the 

 female, conspicuously shorter and thicker in the subadult 

 male (the adult male is unknown) ; upper flagellum a little 

 shorter than the lower and shorter than the sum of the 

 two distal peduncular joints. First pair of legs with the 

 fourth joint reaching the end or conspicuously beyond the 

 end of the antennular peduncles. Abdominal segments 

 without dorsal denticles or keels ; sixth segment about as 

 long as the sum of the fourth and the fifth. — Length of 

 the largest female 24 mm. 



Boreal North Pacific (U. S. Nat. Museum). 



Nematoscelis G. O. S. 



To Sars 1 description of the genus some points may be 

 added. In the female second and third antennular joints 

 are slender and rather long ; in adult males they are con- 

 spicuously or even much thicker, second joint somewhat 

 and third considerably shorter than in the other sex. 

 Sixth pair of legs with the exopod well developed in both 



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