SYSTEMATIC ACCOUNT 163 



the anterior third is separated by a fairly deep groove from the posterior part. In the anterior third 

 the raised area forms a large central protuberance with a smaller one on either side of it. 



The antennules (Text-fig. lob) are longer than the antennae. The peduncle consists of three joints, 

 the middle one of which is the shortest and the distal one the longest. The flagellum consists of a 

 single joint, about half the length of the third peduncular joint; it bears at its distal extremity five or 

 six sensory setae, three of which arise together from what may be regarded as a minute second joint. 



The antenna (Text-fig. 10a) is extremely short, its five peduncular joints are not much longer than 

 broad; the flagellum, which consists of a single joint, is very small, only about a third of the width of 

 the fifth joint of the peduncle, and less than a third of its length ; it bears three long setae at its distal 

 extremity. 



Text-fig. 10. Edotia conugata sp.n. (a) Antenna, x 50. (^i) Antennule, x 50. (c) Maxilliped (right), x 50. ((/) Left mandible, 

 X 50. (e) Right mandible, x 50. (/) Maxillula (left), x 50. (g) Maxilla (left), x 50. (/;) Second pereiopod (with coxa), x 30. 

 (;') Distal portion of protopodite and endopodite of uropod, x 20. (k) First pereiopod, x 20. (/) Appendix masculina. 



The maxillula (Text-fig. 10/) is of the usual type; the truncated end of the outer lobe bears six or 

 seven pectinate setae and the delicate inner lobe bears two strong plumose ones. Both the outer and 

 middle lobe of the maxilla (Text-fig. 10^) bears five pectinate apical setae; the fixed inner lobe has 

 three delicate and three strong plumose setae on its truncated extremity. The form of the cutting 

 edges of the mandibles and the maxillipeds can be seen from Text-fig. 10 c, d and e. 



All the pereiopods are prehensile, the anterior four pairs are directed forwards, the posterior three 

 pairs backwards; the first pair (second thoracic) (Text-fig. 10/) is shorter and stouter than the 

 remaining ones, and is subchelate. The propodus is broad and bears, on its inner margin, a double row 

 of short, closely set spines ; the dactylus is also armed with a row of short spines. The rcmammg six 

 pairs are all very similar to each other, both in form and size (Text-fig. 10 h). 



The second pair oi pleopods is modified in the male, the appendix masculina is long and its distal 

 extremity (Text-fig. 10/) is hollowed out on its inner side, the edge being armed with eight or nine 

 spines. 



The protopodite of the uropod is hollowed out, so that when viewed from the ventral side of the 

 body the uropods together form a convex surface. The inner margin of the protopodite is bent 



