90 IHTLLETIN 45, UNITKI) STATK8 NATIONAL MlSKl'M. 



littlr loii};**!'. i)oiiiti*d. Mcsoiiutimi with - furrows, ('(niver};iiij> ami al- 

 most iiu'ctinj; at tiio base of the st'iitelhiin. Wings hyaline, tlu' eosta 

 and stigma brown, the other veins pale. 



Haiutat. — Washington, 1). C. 



Type S in National Museum. 



K«'areil by Dr. C. V. Kiley, at Washington, D. C, July L'.'i, 1S8;{, from 

 Tifphlocyba sp. occurring on Celtis aiul ehn. 



PHORBAS Asliin., f^cn. lutv. 

 (Type /'. hilicc]»i Aslnii., ^ .) 



Head broadly transverse, wider than the thorax, but not especially 

 thick through antero-posteriorly, and when viewed from in front 

 rounded; eyes oblong oval, pubescent; o(«'lli .'?, triangularly arrange«l, 

 neither esi)eeially small nor very close together. 



Antennae l(>-jt)inted, thick, filiform, not longer than the thorax, pu- 

 bescent, the scape cmly a little longer than the lirst tlageUar joint. 



Maxillary i)alpi o-joiuted. 



Mandibles 3 dentate. 



Thorax as in AphclopuH, but witlumt distinct ])arapsidal furrows, tlu^ 

 ])rothorax only slightly visible lr(un above. 



Front wings with a lanceolate stigma, two l)asal cells, and an open 

 marginal cell. 



Abdomen subpetiolate, oval. 



Legs as in Aphelopux. 



A genus describt'd from a single male s]>ecimen, but the lanceolate 

 stigma and 5 jointed maxillary i)alpi will, liowever, distinguish it from 

 all other males, in the genera in whicli the males are known. There is 

 a p<>ssibility that it maybe the opposite sex of my genus Bocvhus, as it 

 agrees with it in maxillary, mandibular, and wing characters, but other- 

 wise, in the shape of the head, thoracic, and abdominal characters, it 

 is quite distinct. Of the otlur genera, it comes nearest to Aphehtpiis, 

 but the widely transverse head, absence of ]iarapsidal furrows, and the 

 lanceolate stigma, sufficiently separate the two. 



The single specimen, described below, was captured in Florida by 



sweeping. 



Phorbas laticeps, sp. iiov. 



(PI. V, FiR. 7,^.) 



<? . Length 2'""'. Robust, black, subopaque, finely shagreened and 

 sparsely pubescent. Head transverse, uuich wider than the thorax, the 

 occiput very wide, not at all emarginate. Eyes prominent, oval, pu- 

 bescent. Mandibles 3-deutate, rufous. Antenme 10-joiuted, extending 

 to the teguhe, i)ube8cent, the scape longer than the first flagellar joint, 

 the flagellar joints, except the i)enultimate, about of an equal length, 

 twice as long as thick, the last pointed, the penultimate only 1^ times as 

 long as thick. Mesonotum with two faint furrows; scutellum smooth, 



