314 ATTSTEALIAN MALACOSTBACA. 



defined by a broad, low, triangular process, and armed near the 

 distal end with a sharp tooth. Pereiopoda short and broad, with 

 a well-defined, bristle- armed palm. Colour grey. Length i in. 

 Clark Island, Port Jackson. 



537. Caprella inermis. 



Caprella inermis, Haswell, 1. c, p. 348, pi. xxiii., fig. 3. 



Cephalon terminating anteriorly in a minute mesial tooth. 

 Neck very long ; first segment of the body longer than the head 

 and neck, the rest shorter. Superior antennae as long as the 

 cephalon and first segment of the pereion ; flagellum shorter 

 than the two last segments of the peduncle. Anterior gnathopoda 

 short ; propodos ovate, palm longitudinal, undefined. Posterior 

 gnathopoda very large ; propodos elongated, narrow ; palm 

 excavate, uniformly concave, occupying about one-third of the 

 entire length of the propodos. Branchiae sub-cylindrical. Last 

 pair of pereiopoda longer than the others. Colour green. 

 Length -to in. 



Port Jackson. 



538. Caprella obesa. 



Oaprella obesa, Haswell, 1. c, p. 348, pi. xxiv., fig. 1. 



Male. — Body stout, unarmed ; first two segments subequal, 

 the rest much shorter. Eyes small, round. Superior antennae 

 rather exceeding in length the cephalon and two succeeding 

 segments ; peduncle very stout, flagellum equal in length to the 

 last segment of the peduncle. Inferior antennae a little longer 

 than the first two segments of the peduncle of the superior pair, 

 fringed below with long hairs. Anterior gnathopoda small, palm 

 longitudinal, undefined. Posterior gnathopoda very large, basos 

 broad, its anterior border minutely toothed ; propodos as long 

 as the cephalon ; palm longitudinal, defined by a conical tooth 

 and armed with two others — of which the proximal is the smaller 

 — towards the distal end. Branchiae clavate. Pereiopoda sub- 

 equal, short and stout, with a distinct palm. Colour red. 

 Length § in. 



Clark Island, Port Jackson. 



