68 POMPILUS NOTATUS. 



apex of the wings narrowly fuscous ; that portion of the externo- 

 medial nervure which crosses the base of the first submarginal 

 and second discoidal cells forming a regular curve ; the anterior 

 tibiae ferruginous in front, the intermediate and posterior tibiae 

 serrated. Abdomen : the two basal segments ferruginous ; the 

 apical margins of the following segments rufo-piceous ; the 

 extreme apex ferruginous. 



Male. Length 3J lines. Black ; a longitudinal impressed line 

 extending from the anterior ocellus to the base of the antennae ; 

 the antennae slender, longer than the thorax ; the mandibles 

 rufescent at their apex. Thorax slightly pubescent ; the meta- 

 thorax covered with silvery pubescence, most dense at the sides ; 

 the tegulae piceous ; the wings iridescent, the nervures black ; 

 the coxae covered with a dense silvery pubescence ; the anterior 

 legs have the femora towards their apex within, the tibiae, and 

 basal joint of the tarsi, ferruginous ; the intermediate femora 

 and tibiae, excepting the base of the former and the knees, and 

 the entire posterior femora, ferruginous. Abdomen : the second 

 segment with a broad ferruginous band at the base ; the sixth 

 ventral segment with a slight emargination on each side of its 

 centre, which is slightly produced. 



The female of this species very closely resembles that of P. ex- 

 altatus ; but its antennae are thicker, the vertex is wider behind 

 the eyes, and its posterior margin more rounded ; the meta- 

 thorax is more convex, and its truncation much less oblique ; 

 the marginal cell is shorter and wider ; the second recurrent ner- 

 vure is not longer than the third transverso-cubital nervure ; the 

 abdomen is wider at its base, and has usually only the two basal 

 segments ferruginous. It is easily distinguished from P. exalta- 

 tus if the neuration of the wings be examined ; in the latter, that 

 portion of the externo-medial cell which crosses the base of the 

 first submarginal and second discoidal cells forms a separate 

 curve at the base of each cell. 



This is a very rare species, four examples only, to my know- 

 ledge, having been captured previous to the past season of 1858. 

 In the month of June a locality was discovered near Highgate, 

 where seven males and one female were captured ; I also took a 

 female at Deal, and a male was taken at Ripley by J. F. 

 Stephens, Esq. 



16. Pompilus (Priocnemis) hyalinatus. 



P. niger; abdomine antice rufo; alis hyalinis, fascia ante apicem 

 fusca. Fwm. 



