CKUSTACEA WHITELEGGE. 



229 



Length of first Icj:^ (finger excluded)... ... 9 mm. 



,, ,, second leg (finger excluded) ... 8-5 ,, 



„ „ fourth „ „ „ ... 10-5 ,, 



„ „ seventh „ „ „ ... 9 „ 



Four examples, including one male, obtained off Port Jackson 

 in 3G-39 fathoms. 



Family JEGIDJE. 



^GA, Leach. 

 ^GA AUSTRALIS, sp. nov. 



(Fig. 20«-/.) 



Station 44. 



Body somewhat elongate, about two and a half times as lono- 

 as broad, slightly tapering from the middle towards both extremi- 

 ties, the pleon a little nari'ower than 

 the pei'aeon. Cephalon twice as 

 broad as long, with a well defined 

 rostral process, which is as long as 

 broad at the base, and completely 

 separating the inner bases of the first 

 antennte ; inner frontal margins 

 oblique, outer slightly convex. 

 Peraeon segments subequal in length, 

 shorter than the cephalon, with the 

 rostrum included, the first and fifth 

 slightly longer than the others ; sur- 

 face strongly convex from side to side; 

 the usual transverse grooves are dis- 

 tinctly defined on all the segments ; 

 on the first and second the grooves 

 are situated near the posterior mar- 

 gin, whilst those on the remaining 

 five ai'e near to or in advance of the 

 centre. The epimei'a in all the 

 examples except one — a gravid 

 female — are invisible from above ; 

 the curved ridges are somewhat ill 

 defined. The posterior epimeral bor- 

 der of the second and third segments „ 



, - . , , • 1 1 ^ Body viewed FROiM above. 



IS obliquely truncated, with rounded Fig OQa 



