638 



SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



[Crustacea. 



junction of which with the propod is marked by an imperfect row of setae ; propod 

 also enlarged on the posterior margin ; finger not reaching to the end of the rounded 

 lobe. Second gnathopod (fig. Id) very large and strong, basos not widened ; basos 

 and ischium both slightly hollowed anteriorly to receive the propod when reflexed ; 

 carpus very small, almost covered by propod, propod with greatest width nearly 

 equal to the length, anterior margin very convex, posterior also convex and dis- 

 tinctly marked off from the palm (though without defining spine), which forms a 

 right angle with it ; palm slightly oblique, produced near base of finger into a strong 

 prominent subacute tooth which overlaps the finger on its outer side, portion between 

 the tooth and end of palm deeply concave ; this portion of palm is broad, the propod 

 being here produced on the inner side into a prominent ledge ; finger strongly curved, 

 its inner margin bearing towards the base a small subacute projection which impinges 



Fig. 7. — Parorchestia maynei, sp. nov. 



7a. First gnathopod of female. If. Third iiropod of male. 



76. Second gnathopod of female. Ig. Telson of male. 



7c. First gnathopod of male. 7e. Fifth peraeopod of male. 

 Td. Second gnathopod of male. 



against the tooth of the palm ; the inner margin of the finger and the margin of the 

 palm bearing a few short setae. Third peraeopod shorter than the fourth, both 

 with the basos rather narrow ; fifth (fig. 7e) a little longer than the fourth, its basos 

 well expanded, posterior margin slightly convex and minutely serrulate, propod 

 longer than either the merus or carpus, which are subequal, all the joints supplied with 

 long setae, none of the j oints specially expanded, finger long and slender. Uropods 

 1 and 2 with spines on peduncle and at the end of branches and on upper margin 

 of inner branch, third uropod (fig. 7/) very small, not reaching beyond the telson, 

 two strong setae on upper margin of peduncle, the branch half as long as peduncle, 

 and bearing three setae at its extremity ; telson (fig. 1g) with upper surface slightly 

 concave, about two-thirds as broad as long, apex slightly emarginate, with three 

 spines on each lobe, and two large spines near the middle of each lateral margin of 

 telson. 



