A. R. Grote's Notes on the Zygsenulse of Cuba. 185 



Primaries nearly half as long again as the entire body ; nervules 

 straight, equidistant; a lower, narrow, linear cell below the median, 

 formed by a vein arising from what is at first a mere longitudinal fold. 

 Four median or lower nervules. Three superior nervules, of which 

 the second and third arise near together at base. Internal nervure 

 arcuate. 



I erect this genus for a species, so far as I am aware, one of the 

 smallest of its family, and of a much narrower shape than Harrisina 

 Sanborn i. Packard, a species structurally widely separated from the 

 present. 



Formiculus pygmaeus, n. sp. 



Blackish; thinly ^covered with scales. Front with a few whitish 

 scales. Abdomen, above, with dark cyaneous scales. Wings, narrow ; 

 centrally, below and above the median nervure, narrowly diaphanous ; 

 an entirely clear, rounded patch at the extremity of the disc. Second- 

 aries reduced, narrow, blackish; a central clear spot preceded by a li- 

 near, sub-diaphanous streak. Under surface resembling upper. Legs 

 and under corporal surface, blackish, the former a little the palest. 

 Exp. 0.G5 to .70 inch. Length of body, 0.35 inch. 



Eabitat.— Cuba (Poey). Coll. Ent. Soc. Phil. 



Nvmber 127, Poey's MS. Catalogue. 



In the free head, serrated antennae (which are however stouter and 

 shorter), and elongate wings, this singular genus resembles Callicarus. 

 The smaller posterior legs ally it to the succeeding genera. The neu- 

 ration of these narrow winged Zygamid genera reminds us of the 

 JEgeriidse. The dark tegument and sub-cyaneous abdominal scales of 

 Formiculus are characteristics of its Family. The nou-petiolated ab- 

 domen, among other characters, will distinguish Formiculus from Pseu- 

 dnsphex, Hlibner. 



BTJRTTA, n. g. 



Antennae ( % ) moderate, closely bi-pectinate to their tips. Palpi, 

 small, porrect, hardly exceeding the front. Head, broad behind; pro- 

 thoracic pieces, prominent. Body, slender, linear; abdomen, long and 

 narrow, closely scaled ; genitals ( £ ) very prominent and exposed, con- 

 sisting of a prominent, superior, forcipated piece, and two very elong- 

 ate, inferior, lateral, corneous pieces, all of which are lengthily hirsute. 



Wings, comparatively short and wide. Primaries, greatly larger 

 than secondaries ; rounded at the apices; external margin roundedly 

 oblique; internal margin straight, short. Subcostal nervure, except 

 at extreme base, running contiguous and parallel with costa, furrowed 



PROCEEDINGS ENT. SOC. PHILAD. JULY, 1666. 



