299 



tlic base of the brancliiostegal spine and tlie hepatic groove, a 

 small granule posteriorly near this groove. Posterior moiety of 

 dorso-lateral crest divided into 3 obtuse lobes or tubercles, of 

 which the anterior is half as h)ng as the 2"^^ which is as long 

 as the 3^'^. Of the 2 teeth of the anterior moiety of the lateral 

 crest the anterior is acute and reaches as far forward as the 

 margin between the orbital and the branchiostegal spine, the 

 posterior is longer, obtuse; posterior moiety obsoletely notched 

 at the posterior third. 



Abdomen much resembling that of Ghjph. (Plastocrangon) raeca 

 W.-Mas., but the 4"i, 5'b and 6^^ terga are slighthj lonr/er with 

 regard to their width and their tuhercidatiön is different. Median 

 crest of 2°d and 4ih tergum hardly notched, that of S'il entire; 

 6th tergum separated from the pleuren by a longitudinal row of 

 4 subacute tubercles, telson not crested anteriorly, thougli with 

 a small, acute tooth at base. 



Antennular peduncle reaching by the terminal joint, which is 

 lialf as long as the 2^^, beyoiid the antennal scale; the latter 

 twice </.s' Ion;/ as broad, as long as the antennal peduncle. Eyes 

 (in spirit) of a drab colour. External maxillipedes just reaching 

 beyond the scale. Peraeopods of 2°^ pair much lom/er than the 

 three following, projecting by the chela and one-third the carpus 

 beyond the scale. The three posterior peraeopods nearly as in 

 (Hijph. {Plastocrangon) cacca W.-Mas. 



Eggs not numerous, of a rusty colour, greatest diameter 2,3 mm. 



The female from Stat. 12 belongs to a variety, distinguished by 

 the blunt tubercle on the hepatic area being substituted by 2 

 small granules, by the anterior moiety of the dorsal crest being 

 formed by 4 or 5 tubercles, of which the posterior but onc is 

 much larger and longer than the other ones, that are small, by 

 the two posterior lobes of the posterior moiety of the dorso-lateral 

 crest being hardly separated and by the median crests of the 

 abdomen being more prominent, while those of the 2^^ and 6't 

 tergum are entire, not notched. 



