A REVIEW OF THE MYSIDACEA 



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of the endopod of the third to the eighth thoracic limbs is divided into 

 from 3 to 6 subjoints. (5) The telson (fig. 74, c) is triangular, about 

 1% times as long as broad at the base ; apex truncate, one-quarter of the 

 width of the telson at its base, armed with two pairs of spines, the inner 

 pair much shorter than the outer pair; lateral margins armed with 

 about 17 to 21 spines, not arranged in series, and, after the three large 

 spines at the base, gradually and regularly increasing in size toward 

 the apex. (6) The fourth pleopod of the male (fig. 74, b) has the 



Figure 74. — Neomysis awatschensis (Brandt): a, Antennal scale and peduncle, X 33; 

 b, fourth pleopod of male, X 33; c, telson, X 33. 



distal joint of the exopod only about one-quarter of the proximal joint 

 and the terminal setae are longer than the distal joint. 



I have already pointed out the close resemblance of this species to 

 N. intermedia. Because of the difference in the relative proportions of 

 the telson the spines on the lateral margins appear to be more crowded 

 than in N. intermedia (figs. 73, c and 74, c) though the actual number 

 of spines present is not greatly different in the two species. The 

 fourth pleopod of the male and the character of the rostral plate 

 afford the most distinctive differences between the two species. 



