NYPIIASIA. 



151 



Group PHORACANTHINL 



Eyes large, deeply emarginate. Antennae spined posteriorly 

 at tiie apex of some of tlie joints. Front eoxie globular, their 

 acetabula rounded on the outer side, open or closed posteriorly. 

 Acetabula of middle coxae not extending to the epimera. Meta- 

 steriium usually provided with scent-])ores. 



Most of the genera belonging to this group are found in 

 Australia and America. Two only are included in the Indian 

 fauna, and one of these {Nijj^tliasla, Pasc.) is very closely related 

 to Cordi/lomera, Serw, the only genus of tlie group which occurs 

 in Africa. 



Synopsis of Genera. 



A. Acetabula of front coxoj closed posteriorly .... Nyphasia, p. 151. 



B. Acetabula of front coxaj open posteriorly Nysina, p. 153. 



Genus NYPHASIA. 



Nyphasia, Pascoe, A. M. N. li. (3) xix, p. 313 (18G7) ; Laconl Gen. 

 ^ CoUopt. viii, p. 308 ^1869;. 



Type, N. torrida, Pascoe. 



liange. India, Ceylon, Burma, and Siam. 



Head with the front subvertical, transverse, limited below by 

 well-marked sutural lines ; antenniferous tubercles formed into 

 an obtuse ridge, slightly concave from side to side between the 

 antenna) ; palpi rather short, with the last joint subcylindrical ; 

 outer lobe of maxillae elongate, with a brush-like end ; eyes deeply 

 emarginate, with the upper lobes rather narrow. Antennae longer 

 than the body, with joints three to six or seven acutely spined 

 posteriorly at the apex; first joint clavate, slightly curved; third 

 longer than the fourth and slightly shorter than the fifth. Pro- 

 thorax as long as it is broad, with two or three feeble obtuse 

 tubercles on each side ; slightly depressed above and marked with 

 a transverse groove near the apex and anotlier near the base ; its 

 front margin somewhat sharply rounded in the middle. Scutellum 

 posteriorly acuminate. Elytra slightly narrowed backwards ; each 

 sharply rounded or subacuminate at the apex and sometimes 

 armed with a spine. Legs moderately long, the hind pair 

 distinctly the longest ; femora pedunculate with an oval thickening 

 before the apex ; first joint of hind tarsus about equal in length to 

 the next two united. Acetabula of front coxae rounded on the 

 outside ; intercoxal process rather narrow in the middle, gradually 

 sloped and widely dilated posteriorly, meeting the epimera behind 

 the middle of the coxae ; acetabula of the middle coxae shut off 

 from the epimera by a prolongation of the antero-lateral angles of 

 the metasternum. Metathorax with scent-pores placed near the 

 suture which separates the epimera from the metasternum, not 

 far from the hind angles of the latter. 



