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ZOOLOGY OF THE FAR EAST. 
In A^. awatschensis, the fourth pleopod of the male reaches to the middle of 
the telson, the proximal joint of the outer branch is double the length of 
the distal and the terminal setae are rather more than half as long as the 
distal joint (PI. XV, fig. 4). 
This species is also very closely allied to A^. intermedia, Czern., but differs in the 
form of the rostrum and, to judge from Czerniavsky's figures, also in the form of the 
fourth pleopod of the male. 
N. nigra was found by Nakazawa in the Lake of Hamana, a brackish inlet of the 
sea, and also in the Gulf of Tokio, both locahties in Japan. Its occurrence in 
practically a similar habitat in China is interesting. 
Neomysis awatschensis, Brandt. 
(PL XV, figs. 1-4.) 
Mysis awatschensis, Brandt, 1851, p. 126. 
Mysis awatschensis, Czerniavsky, 1882, p. 22, pi. xviii. figs. 13-17. 
N. awatschensis, Zimmer, 1904. 
N. awatschensis, Derzhavin, 1913, p. 197. 
Locality:— hake Kasumi-ga-ura, Japan, 15. x. 15, near bottom, about 30 ft., 
abundant, up to 10 mm. 
This species does not appear to have been redescribed since Brandt published 
his short account of the species in 1851, except for Czerniavsky's brief diagnosis 
drawn up from specimens in the Petrograd Museum. This description is based on 
female examples and it is necessary to supplement it by an account of the pleopods 
of the male. 
The rostrum is in the form of a broadly and evenly rounded plate, not pointed 
at the apex. 
The first five segments of the pleon are more or less subequal while the sixth 
segment is one and a half times as long as the fifth. The telson (PI. XV, fig. 3) is as 
long as the sixth segment of the pleon, one and three quarter times as long as broad 
at its base, apex truncate, one quarter of the breadth of the telson at its base. 
The lateral margins of the telson bear about fifteen spines ranged along the whole of 
their length and the apex bears two pairs of spines, an inner shorter pair and an 
outer longer pair. 
The inner uropod is one and a half times as long as the telson and the outer 
uropod twice that length. 
The eye (PI. XV, fig. 2) is slightly more than one and a half times as long as 
broad, the peduncle two-fifths as wide as the length of the eye and the pigmented 
portion occupying less than one-half of the eye. 
There is a prominent spine on the labrum. 
The peduncle of the antennules is about one-half of the length of the antennal 
scale. The latter projects for two-thirds of its length beyond the antennal peduncle 
and has two prominent spines on the basal joint from which it springs, one on the 
outer distal corner and the other on the inner lower corner. The scale (PI. XV, fig. i) 
