— 6 — 



Faxon, but the best distinguishing features show it to be inter- 

 mediate between the two hitherto known species which differ 

 considerably from each other. As in E. sculpticauda the front 

 part of the carapace is produced between the insertions of the 

 eye-stalks as a rather low triangle, while the front margin in 

 E. australis is equally and rather flatly convex. The eyes are 

 light yellowish; the inner front end of the eye-stalks is adorned 



Fig. 2. — First right tho- 

 racic leg of E. inter- 

 media, from behind. 



Fig. 3. — Outline of tel- 

 son ; the row of laté- 

 ral subdistal impres- 

 sions omitted. 



Fig. 4. — First right tho- 

 racic leg of E. sculpti- 

 cauda^ from behind. 



with a small slender process which is bent somewhat outwards. 

 First pair of thoracic legs (fig. 2) is much thicker than in 

 E. australis (fig. 1) but less thick than in E. sculpticauda (fig. 4), 

 (thèse three figures have been drawn with the same degree of 

 enlargement) ; especially the différence between fifth joint of 

 thèse legs is very conspicuous, this joint being in E. australis 

 more than four times, in E. intermedia a little more than two 

 times, in E. sculpticauda only 3/2 times as long as broad. 

 Rather similar but less pronounced différences are found in 

 second and third pairs of legs. The telson affords excellent 

 characters; in E. sculpticauda « a constriction a little way in 

 « front of the tip divides off a terminal plate which is rounded 

 « at the end, its latéral margin being concave » ; in front of this 

 constriction a rather long part of the upper surface « is beau- 

 ce tifully ornamented with a network of ridges enclosing 



