THE CANADIAN ENTOMOLOGIST. 



215 



enclosure on the sixth segment entirely black. Wings hyaline, beautifully 

 iridescent, the nervures and stigma black. Head, thorax and abdomen 

 smooth. The head as wide as the thorax, and the vertex longer than 

 wide, the front narrow. The ocelli arranged in an equilateral triangle, each 

 in a separate depression ; from the anterior ocellus an impressed line 

 extends downwards upon the face and another extends backwards upon 

 the vertex ; on the inner orbit on the vertex is a slight groove curving at 

 the end to come in a line with a short oblique groove behind each pos- 

 terior ocellus. Prothorax sharply angulated beneath, mesopleura sharply 

 angulated beneath near the coxae. Anterior portion of the mesonotum 

 with four short lines which extend upon the collar as slight notches ; 

 mesonotum with a slight groove on each side of the disk and with a 

 marginal row of reticulations over the tegulae. Scutellum quadrate, con- 

 nected with the mesonotum by the broad lateral angles between which it 

 is separated by a basal row of large reticulations. The semi-circular area 

 on base of metathorax is encircled by a row of similar reticulations and 

 divided by a deep median groove. Similar rows of reticulations extend 

 in a slightly curved line down upon the mesopleura from the anterior 

 wings and others mark the lateral sutures of the metathorax. The sides 

 of the mesothorax beneath and the sides and posterior face of the meta- 

 thorax are finely striate ; these striae curve upon the metathorax above 

 and are represented within the enclosure by striae of microscopic fine- 

 ness. The posterior face of the metathorax has a deep triangular median 

 depression above and is more coarsely rugose beneath. Area on the 

 sixth segment of the abdomen not punctured, depressed medially, the 

 sides much thickened and raised. Abdomen shorter than the rest of the 

 body, narrow at base, broad near the tip. The posterior tibiae much 

 thickened. 



New Haven, Conn., July 15th. 



The elongate head and clavate abdomen give this species a very 

 peculiar appearance. 



AN ANOMALOUS BOMBYLID. 



BY S. W. WILLISTON, NEW HAVEN, CONN. 



I have recently received from North Park, Colorado, two interesting 

 specimens of Anthrax, one of which is remarkable for its neuration. They 

 are of a new species of the A. halcyon group, and both apparently 



