CEROPALES. — APOEUS. 177 



mark behind ; the fuur hinder coxce black, yellow and red beneath, 

 the tarsi black ; the spurs pale, the hinder about two-thirds of the 

 letio;th of the metatarsus. Wings clear hyaline, the second cellule 

 half the length of the third above and beneath ; the 1st recurrent 

 nervure received slightly past, the l^nd slightly in front of the 

 middle of the cellules. Antennoe moderately thick, brownish 

 beneath at the base ; the third and fourth joints subequal. Eyes 

 with a distinct curve at the top, distinctly converging at the apex, 

 they being there separated by a little more than half the length 

 they are at the top. Clypeus with the sides oblique, the apex 

 transverse. Ocelli in a triangle, separated from the eyes by twice 

 the length they are from each other. Pronotum semi-transverse, 

 behind quadrate, the sides at the base projecting into triangular 

 teeth. Mesonotum flatfish, with two longitudinal furrows ; the 

 furrow on the mesopleurae narrow ; raetanotum gibbous ; median 

 segment with a gradual slope. Except on the median segment the 

 body is almost glabrous. 



^'•Length 8-9 mm. 



" Hab. Pooua ( Wrouglitoii)." Unknown to me. 



Genus APORUS. 



Aponis, Spinola, Lis. Lig. ii, p. 35 (1808) ; Smith, Cat. iii, p. 174 



(18o5). 

 Pompilus, pt., Kuhl, Terh. zool.-bot. Ges. JJ'ien, 1881, p, 52 et seq. 



Type, A. unicolor^ Spin. 

 Range. Both hemispheres. 



Head subglobose, about as wide as the thorax ; ocelli in a 

 triangle on the vertex; antennae inserted about the 

 middle of the face, not so long as the head and 

 thorax united, fihforra, slightly curved after death 

 in the female; labrum concealed, clypeus subporrect; 

 thorax convex above ; scutellum minute, depressed 

 below the level of the mesonotum ; for the rest, the 

 characters are those of Pompilus, except that in the 

 fore wing there are only two cubital cells and 

 that the anterior tarsi are not ciliated. The 2nd 

 Fie. 39. cubital cell receives both recurrent nervures. 



Aporus cotesi, JSote. — Kohl (loc. cit.) considers that the species 



$. T- of this genus are derived directly from Pompihis 



by the loss, in the fore wing, of the 2nd trans- 

 verse cubital nervure, and that Aponts cannot be kept distinct 

 from Pompilus. It is quite probable that the one genus has 

 been evolved from the other in the ^^■ay indicated bv Kohl : 

 still, as the distinctive character of two cubital cells in the 

 fore wing seems to be constant, and generic distinction is a 

 matter of convenience, I see no reason w hy Ajiorus should not be 

 kept separate from Poiiqjilvs, so long as it is ])laced next to that 

 genus and the relationship between the two is clearly understood. 



VOL. I. X 



