DISCOCERINA. 145 



the base brownish-red. At the costal margin of the wing there is 

 a broad, deep-black band, running from the base to the tip of the 

 third longitudinal vein ; its posterior limit runs from the base of 

 the wing along the middle of the discoidal cell to nearly the pos- 

 terior transverse vein, recedes from it suddenly almost to the third 

 longitudinal vein, follows this vein first at a little, then gradually 

 at a greater distance, and lastly turns to its tip ; the posterior 

 part of the wing is rather dull glassy, and almost grayish at the 

 axillary angle ; the veins in the latter are brownish, those in the 

 blackish parts of the wing black. The place of this species in the 

 system is very deceptive ; for at a superficial view the thickened 

 costal vein seems to reach only the third longitudinal vein ; but 

 this deception arises from its color being black as far as the third 

 longitudinal vein, and very pale between this and the fourth. 

 Hob. Cuba. (Poey.) 



Geii. VI. DISCOCERI1VA MACQ. 



The second joint of the antenna has a distinct spine, the third 

 is rounded ; the bristle pectinated. The face on its upper part is 

 distinctly keeled, in the middle more or less inflated, receding 

 again towards the border of the month. Clypeus projecting very 

 little beyond the border of the mouth or entirely concealed ; 

 cheeks moderately descending beneath the eyes. The costal vein 

 attains the fourth longitudinal vein. Upper side of the inter- 

 mediate tibiae without stout bristles. Discocerina stands between 

 the genera Psilopa Fall, and Hecamede Hal., being distinguished 

 from Psihpa by the more rounded form of the third joint of the 

 antenna? and the keel on the upper part of the face ; from Heca- 

 mede chiefly by the cheeks descending much less beneath the eyes. 

 I can describe only two North American species of this genus, yet 

 four are known to me as occurring in Europe. [Three more 

 species, reproduced below, have been published by Mr. Loew 

 since. O. S.] 



1. D. lacteipennis LOEW. ^ . Ciiierascens, opaca, antennis, geni- 

 bus, tibiarum apice tarsisque flavis, alis albidis, vena costali atra. 



Opaque, ashy gray ; antennae, knees, tibise at the tips and tarsi yellow ; 

 wings whitish with deep black costal vein. Long. corp. 0.11. Long. al. 

 0.12. 



Very similar to the European Hecamede costata Loew, but easily 

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