A REVIEW OF THE MYSIDACEA 



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lateral margins armed throughout their whole length by 29-35 spines, 

 not arranged in series but increasing regularly in length toward the 

 apex and becoming more crowded together. (6) The fourth pleopod 

 of the male (fig. 75, c) has the distal joint of the exopod about one- 



Figure 75. — Neomysis kadiakensis Ortmann: a, Antennal scale and peduncle, X 25; 

 b, telson, X 37; c, fourth pleopod of male, X 25; d, rostral plate, X 78; t, one of anterior 

 oostegites to show posterior lobe or baler, X 78; /, finger-shaped process on thoracic 

 sternum of sixth, seventh, and eighth somites, X 78. 



half the length of the proximal joint and slightly longer than the 

 terminal setae. 



This species is very closely allied to N. rayii. It is, however, a 

 smaller species and differs clearly in the form of the telson. The 

 latter in N. kadiakensis is proportionately more slender and tapering 

 than in N. rayii, the apex distinctly narrower and, though truncate, 



