268 Mr. Shuckard^s Monograph of the DorylidEC^ 



tive of India, and thus binds the forms of the Old and the New 

 World together. The genus is, however, as yet incomplete, as I 

 only know male individuals. 



Sp. 1. iEnict. ambiguus. Shuck. Length nearly 4 Hnes. 



Expansion 74 lines. 

 Rufo'testaceiiSy pubescens: capite (antennis, mandibulisque exceptis) et 

 thorace nigro. 



Reddish testaceous, covered with a close silky down ; head, with the ex- 

 ception of the antennae and mandibles, which are of the same colour 

 as the body, black and shining ; ocelli placed upon an eminence on 

 the vertex, in a curve; mandibles very long, much curved, somewhat 

 broadest at the base, pubescent externally, and when closed leaving a 

 wide space between them and the clypeus, upon the anterior margin 

 of which the antennae are inserted in a cavity, the inner carinated edges 

 of which join in the centre of the face, forming a single carina, which 

 extends to the anterior ocellus. Antennae rather robust, equally thick 

 throughout, the scape not thicker than the flagellum and about one- 

 third its length. 



Thorax black, or sometimes pitchy, covered with a close decumbent down, 

 convex, very gibbous at the scutellum, which is quadrate : superior 

 wings with the nervures and stigma brown ; the tegulae testaceous ; 

 legs short, slender, testaceous, and covered with long loose hair. 



Abdomen testaceous, covered with close decumbent down, with the pedun- 

 cle wider than the second segment, deeply canaliculated, and of the 

 shape of a saddle reversed, rounded at the base; the terminal seg- 

 ment rounded and obtuse. 



Col. Sykes's collection. 



A native of Poonah in Bombay, whence it was brought by Lieut. 

 Col. Sykes. I have above amply dilated upon its extremely ano- 

 malous structure. The female unfortunately is not known. 



Genus 3. Dorylus, Fab. 

 Vespa, Lin. MuTiLLA, Lin.^ Christ. 



Body elongate, cyHndrical, more or less pubescent. 



Head small, transverse, flat, the face sometimes swollen. 



Antenncs short, setaceous, curved, the scape long and stout, inserted near the 

 anterior edge of the clypeus within the inner angles of the mandibles; 

 the scape and flagellum varying considerably in their relative propor- 

 tions, the former rarely one-third the length of the whole organ, the 

 apex of which rarely extends to the insertion of the superior wings. 



Ei/es moderately large, globose, very prominent and lateral. 



Ocelli placed in a triangle on the vertex, very large and prominent. 



Mandibles edentate, much compressed, forcipate, convex externally, and 

 concave within, variable in form and proportion. 



Labrum semicircular, occasionally tuberculated and shutting down upon 

 and inclosing the remainder of the trophi. 



