122 PACKARD, HUMBLE BEES, ETC. 



front and obtusely pointed; in front are two triangular 

 pieces, united for a slight distance along the mesial line, 

 but they soon separate to allow the base of the maxilke 

 to pass up between them ; these last are very long and 

 slender, and with the legs and wings extend down to the 

 anterior edge of the fifth abdominal ring ; the forewings 

 are long, narrow and acute, the outer edge very oblique, 

 and continuous with the hind edge ; the pro-thorax is 

 short, excavated in front, with a slight mesial tooth ; the 

 hind margin convex, with a mesial excavation corres- 

 ponding to the tooth in front; there is a mesial ridge 

 on the pro- and meso-thorax ; the meso-scutellum is sol- 

 dered in front without suture, behind acutely pointed ; 

 behind is (probably) the post-scutellum, transversely 

 linear, but distinct; meta-thorax as usual, square behind; 

 the second pair of wings are visible at their insertion and 

 along the hinder edge. Ten abdominal rings very equal 

 in length, minutely punctured, smooth on the emarginated 

 hind edge ; from the fifth, the tip slowly becomes conical ; 

 the extreme tip is rather obtuse, not spinous, but with a 

 few hairs. In color it is of the usual reddish testaceous 

 tint, but paler than usual. Length, .34 ; breadth, .08 inch. 

 The year after this larva was discovered at Warwick, Mr. 

 Putnam raised it from the larva? found in bees' nests at 

 Bridport. This species is respectfully dedicated to Miss 

 A. M. Edmands of Cambridge, who was the first to draw 

 attention to its interesting habits. In this respect it differs 

 much from other species of the same genus. Ratzeburg 

 in his " Forstinsecten" figures two species which feed on 

 the pine leaves, and Dr. Clemens* describes the habits of 

 two species which feed upon the American Elm. 



MICROGASTER Latreille. 



MlCROGASTER NEPHOPTERICIS nOV. Sp. 



Male. The body of this species is black with pale and 

 black-brown legs. The eyes are provided with short scat- 

 tered pale hairs thickest around the margin like those on 



*Proc. Acad. Nat. Sci. Philad. p. 205. 1860. 



