21 



different from that of PoJi/)ieiiia. which resembles the species 

 of TIaliday's section A. In m_v arrang;ement of the groups, as 

 C'iven above, CroiMtnccnis and Ooctonus Avonld fall in the same 

 gTonji, as is ])robal)l_v natural, whereas in Ashmead's arrange- 

 ment thev are ]daeed in ditferent tribes. 



(1) Gonatorcrus livaJis Giranlt. 

 Giranlt, Tr. American Ent. Soc. XXXVIT, 257. 



]\rr. Tvoeliele l)red specimens, agreeing well with Giranlt's 

 descriptidn, from eggs of a Jassid attacking sngar-cane, and I 

 believe that the supposition of the latter, that his G. rivalis is 

 the parasite of some water insect will prove erroneous. 



llab. Mexico, Morelos, Cuernavaca, Xov. 23rd, 1907. (Koe- 

 belc). 



(2) Gonafoccrus mexicnnus sp. nov. 



Pitchy brown, the abdomen mostly black, the antennae en- 

 tirely dark, the two basal joints at most a little more pallid; 

 occiput, the parapsidal furrows, and sutures of the mesothorax 

 and base of abdomen iialer, more yellowish ; trochanters quite 

 pallid, but the femora are notably for the most part dusky; 

 middle and hind coxae yellowish. Described from specimens 

 in balsam, as seen by reflected light. The color is probably 

 darker in examples mounted dry. 



The antennae of the female are long and slender, the funicle 

 joints elongate, and differing little in length, the first appears 

 slightly shorter than the second, which is about equal to the 

 pedicel; the eighth funicle joint is slightly shorter than the 

 seventh, which is about two and two-thirds as long as its width 

 at the middle of its length. The club is as long as the eighth, 

 seventh and half of the sixth funicle joints together. In the 

 male the eight or nine apical antennal joints are about equal 

 to the whole length of the insect measured from the front of 

 the head; the pedicel is conspicuously shorter than the first 

 funicle joint, lx>ing about two-thirds as long as this, the second 

 funicle joint is also noticeably shorter than the first, the follow- 

 ing joints subequal, the antepenultimate antennal joint nearly 

 four times as long as wide. Front wing four times as long as 



