AOARI 595 



maxillary plates, and concealed in the longitudinal groove 

 in the middleof thehypostoma,flanked by the hypostomatic 

 hairs. 



Sternal shield large, projecting backwards, far beyond 

 coxae IV, and covering the anterior half of the space between 

 theni and the posterior edge of the body ; it widens gradually 

 towards the back, so that its greatest width is at the posterior 

 margin, which is a little more than twice as wide as the anterior 

 one. The anterior edge is slightly concave, and so are the latéral 

 ones on a level with coxae II and IV; the posterior margin is 

 slightly convex. The shield is demarcated fromthe endopodal 

 shields by anarrow strip of soft, smooth cuticle, whereas the 

 surface of the shield itself is finely punctured. The anterior edge 

 of the shield projects as a thin blade which covers the base of 

 coxae I. 



There are 5 pairs of small hairs : one pair near the anterior 

 margin ; the others near the latéral ones ; the second on a level 

 with the middle of coxae II ; theother three pairs on a level 

 behind coxae II to IV respectively. 



The endopodal shields are fused with one another and 

 with the metapodal shields, projecting half-way between 

 the coxae, with their truncated ends contiguons to the corres- 

 ponding ends of the parapodial shields. Metapodal shields 

 large, projecting backwards neàrly to a level with the poste- 

 rior margin of the sternal shield, with almost straight 

 médian and rounded latéral margin. 



Ventral (or ventri-anal?) shield large, semilunar, covering 

 the entire space at the back of the sternal and metapodal 

 shields, and the posterior edge of the body, except for a 

 narrow strip ; its anterior edge is parallel with the posterior 

 one of the sternal shield, the posterior with the margin of 

 the body. The latéral angles are rounded ; it lias 6 pairs of 

 small hairs, 3 of which are inserted near the anterior margin, 

 2 pairs near the posterior one, and one in front of the anal 

 aperture. 



