110 



areelation, a shallow post-frontal groove, faintly iMfurcating, indicates the 

 usual fore-lobe of the mesogastric area, and there are four faint oval facets in 

 a transverse series between the gastric and cardiac regions. 



Front in the adult about two-fifths the greatest breadth of the carapace, 

 square-cut, strongly deflexed, smooth-edged, very faintly bilobed. Outer 

 orbital angle not prominent, not separated from the lower border of the orbit 

 by a gap. 



Antero-lateral borders of carapace well defined, short ; lateral epibranchial 

 tooth sometimes small and subacute, sometimes a mere granule. 



Epigastric crests low, blunt, indistinct, hardly in advance of, and not 

 distinctly separated from the blunt and indistinct post-orbital crests ; the 

 latter can be traced to the epibranchial tooth. 



Abdomen of adult male a broad-based triangle in outline ; the 6th segment 

 has strongly convergent sides, and its length just equals its distal breadth ; 

 the 7th segment is as long as its proximal breadth, and has a broadly- 

 roimded apex. 



There is nothing peculiar about the antennae, except that the flagellum 

 is very small. 



Mandibular palp of the typical Paratelphusa form, the terminal joint 

 being liilobed or bifurcate in the way already described. 



In the external maxillipeds the exopodite is longer than the ischium, 

 and carries a strong, plumose flagellum, the ischium is longitudinally grooved, 

 and the merus is quadrangular and broader than long. 



In the adult male, but hardly in the female, the chelipeds are unequal — 

 markedly so in old males. The merus is distinctly squanmlose, the carpus is 

 much less distinctly so, and the hand is so very indistinctly so as usually to 

 look quite smooth ; the usual spine is present at the inner angle of the 

 carpus ; the fingers are longer than the palm, and are fairly evenly toothed 

 and nearly straight ; but in the enlarged chelae of old males the teeth are 

 uneven, some of them being enlarged, and the dactylus is arched so that the 

 fingers gape when closed ; in these old males the fixed finger is often shorter 

 than the palm, and may be a little bent. 



Legs a Httle longer than the smaller cheliped ; the longer propodites are 

 more than twice as long as broad, and shorter than their dactyli. 



In a large adult female the carapace is Hths inch long, ilths inch broad, 

 and Mnds inch deep. 



In recent spirit specimens the colour is a dark greenish violet, becoming 

 bronzy-red on the chelipeds. 



This species is undoubtedly very close to P. {Phrieotelphusa) gageii; 

 but in that species the carapace is comparatively flat, the crests are sharp, 

 and the epigastric crests are distinctly in advance of and independent of the 

 post-orbital crests. 



