264 THE SCHIZOPODA. 
Fig. 3a represents the left maxillula, seen from behind; the palp is long, 
somewhat slender, increasing a little in breadth from the base to the obliquely 
truncate end, and the terminal margin has several slender setae and two stiff, 
nearly spiniform ones, the most distal (fig. 3b) serrate beyond the middle.— 
The maxillae (fig. 3c) have the palp still longer than in N. gracilis, as long as 
the inner margin of the lobe of third joint and nearly twice as long as broad. 
A large female is 19.9 mm., a large male 17.8 mm. long. 
Distribution.— The list of Stations shows that NV. tenella was found in nearly 
the whole part South of the line of the area explored, excepting in a broad longi- 
tudinal belt along South America. As already stated, the specimens from Lat. 
12° 34’ N. referred in 1894 by Ortmann to N. tenella belong to N. gracilis H. J. H.; 
on the other hand, one of the specimens from Hyd. Sta. 2627 (Lat. 0° 36’ N., 
long. 82° 45’ W.) and one of the specimens from Sta. 3414 (Lat. 10° 14’ N., long. 
96° 28’ W.) referred by him to N. microps belong to N. tenella. Furthermore 
the species was taken in the Indian Archipelago by the ‘‘Siboga” at a number 
of Stations; Sars’s type was captured South of the Cape of Good Hope, and 
finally it is known from the Eastern Atlantic between the Canary Islands and 
Lat. 36° 46’ N. 
NEMATOBRACHION Caiman. (1905). 
(Nematodactylus Caum., 1896). 
Description.— Carapace with a cervical suture and without any denticle 
on its lateral margins.— Eyes divided into two sections, the upper broader than 
the lower and with its upper surface somewhat flatly vaulted.— Antennulae 
similar in both sexes; peduncles at least somewhat robust; flagella long, slender, 
and multiarticulate—— Antennae with the spiniform process from the outer 
end of the subbasal joint short, about as long as the breadth of the squama; 
last joint of the peduncle of the endopod as long as or longer than the penultimate 
and not reaching the end of the squama.— Mandibles with a three-jointed 
palp.— Maxillulae with or without pseudexopod; the palp slender and at least 
rather long.— Maxillae with their main part, viz. second and third joints with 
their lobes, very broad in proportion to the fourth joint, the palp, which is well- 
marked off, and both lobes with the margin a little bifid. 
First pair of thoracic legs only a little longer than the maxillipeds and of 
the usual structure, slender, with the short last joint a little widened below 
and furnished with peculiar, short setae. Second pair extremely elongate, 
without setae or hairs; its third joint thick; fourth joint at most as long as the 
