384 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



CHLORION (PROTEROSPHEX) BRIDWELLI (H. Fernald). 

 Sphex hridwelU H. Fernald, Psyche, X, 190H, p. 202. 



Types. — Six females, one each in the collections of the U. S. National 

 Museum (Type, Cat. No. 9907 U.S.N.M.), the American Entomological 

 Society, and the Massachusetts Ao-ricultural College in Amherst, 

 Massachusetts, and three in the collection of J. C. Bridv.ell, their 

 captor. 



Insects of medium size; bod}- black and glistening; legs ])lack to near 

 the ends of the femora, the tibite and tarsi, except the last segment of 

 the latter, yellow ferruginous; wmgs strong!}^ fuliginous, \yith a blue 

 or violet reflection. 



Female. — Head somewhat quadrangular with rounded corners when 

 yiewed from aboye; with scattered dark and yellowish hairs; clypeus 

 arched, its anterior margin reflexed, rounded, with a small central notch 

 and the part of the margin nearest the notch projecting a little beyond 

 the general line of curvature; the surface of the ch pens with traces 

 of golden pubescence at the sides, and with scattered, coarse punctures, 

 many very minute ones, and long, yellowish-brown hairs; frons 

 sparsely punctured, golden pubescent at the sides to above the bases 

 of the antenna^, and bearing numerous pale and dark hairs; frontal 

 suture eyident; ocelli located in a triangle marked b}" impressed lines, 

 the lateral ocelli slightly nearer each other than they are to the eyes; 

 vertex very minutely punctured and also sparsely, more coarsely so, 

 bearing scattered, dark hairs; cheeks rather more than half the width of 

 the eye, narrowing quickly below, with numerous tine and a few coarse 

 punctures and scattered hairs, longer and coarser below; inner mar- 

 gins of the eyes parallel; antennse black except the outer part of the 

 scape which is more or less dull ferruginous brown beneath and bears 

 a few dark hairs; tirst segment of the tilament longest; the outer half 

 of the filament a little grayish; mandibles with their teeth and base 

 black, the rest a rather pale ferruginous; with scattered aciculations 

 and hairs on the anterior face and a row of long hairs on the outer 

 margin. 



Thorax. — Collar yery flat laterally on its anterior face, rising sharply, 

 almost at right angles to the neck, its dorsal edge narrow, quite eyenly 

 rounded, its posterior face vertical, somewhat closeh' appressed to the 

 mesonotum; its surface minutely punctured and bearing long, dark and 

 pale hairs; its sides rather glistening; prothoracic lobe with a thick 

 fringe of pale brown hairs on its posterior margin; mesonotum quite 

 evenly covered with punctures of medium size and very many minute 

 ones; with a rather broad, anterior, median grooye extending ])ack 

 nearly half the length of the plate; the sides of the plate with a slightly 

 reflexed margin extending from the front of the tegular to the hinder 

 margin; with a few short, scattered, erect hairs; scutellum quite 



