370 p. CAMERON. 



Scape of antennae rufous beneath. Face and clypeus yellowish ; closely pun- 

 tured, the two parts separated by a broad semicircular furrow; the face is more 

 strongly punctured than the clypeus. Front chagreeiied laterally; the central 

 furrow smooth. Mandibles yellowish, their teeth black. The central lobe of 

 the mesonotuni is smooth, the lateral apical regions closely and stiongly trans- 

 versely striated. Scutellum and post-scutellum smooth and shining. The base 

 of the median segment is smooth and shining and is raised in the centre; the 

 rest is closely and somewhat strongly transversely striated. Pro- and meso- 

 pleurse smooth; the meta- closely and uniformly striated ; the spines are broad 

 and do not project ninch. The hinder tibiae are not so deeply black as the femora, 

 which are rnfons at the base. Abdomen black, with a bluish tinge; the apices 

 of the segments are pale rufous; the ventral surface, except on the basal seg- 

 ment, pale. The wings are highly iridescent; the recurrent nervure is united 

 with the 2nd transverse cubital. The % has the antennae serrate and wanting 

 the white baud ; the metatarsus may be almost entirely black and the petiole 

 may be rufous, wholly or in part. 



Hab. — Peru (G. F. Matliew.) Bred from Bombyx larva. 



CBYPTINI. 

 MEL,A1«0C;RYPTIJS gen. nov. 



Antennae distinctly dilated towards the apex ; the 3rd joint is 

 longer than the 4th. Wings uniformly fuscous- violaceous; the areo- 

 let square, the transverse cubital nervures not converging above, the 

 transverse median nervure is received shortly behind the transverse 

 basal ; there is no stump of a nervure on the disco-cubital nervure 

 which is roundly curved ; the radial cellule narrow, elongate. Me- 

 dian segment long, with two transverse keels and with no lateral 

 teeth ; the spiracles are elongate. The keel on the metasternura 

 reaches from the middle to the hinder coxse. The petiole is long 

 and narrow ; the post petiole is not mnch dilated ; the spiracles are 

 placed shortly beyond the middle, as is also the case with those on 

 the 2nd segment; the spiracles on the 2nd segment are placed near 

 the middle ; the segments are smooth. 



The head is not much developed behind the eyes ; the occiput is 

 not much incised ; the face is stoutly keeled in the centre, and is 

 separated from the clypeus, which is transverse at the apex ; the 

 malar space is moderately large. The parapsidal furrows are almost 

 obsolete; there is a distinct, longitudinally striated furrow at the 

 base of the median segment. The median segment is large, is 

 broadly rounded and is closely coriaceous ; the 2nd keel is broadly 

 bent backwards in the middle. 



The characteristics of this genus are the long, distinctly dilated 

 antennae; the longish, not much dilated, petiole; the unicolorous 



