155 



The larvae are said by Dahlborn to feed with the tail bent sidewise, 

 and raised above the back in the form of a conical spire. 



The transformations of two species are described by Hartig. 

 " Bodies round, smallest behind, segments overlapping, some of the 

 tail segments covered with small spines ; skin thickly punctured, with 

 distinct spiracles at the sides. They live upon shrubs, and are often 

 very abundant. They finally go into the pith wood of the rose and 

 other plants, working in deeply and there remaining until the follow- 

 ing spring." 



Sec. 1. (Emphytus, Hartig.) Hind wings without middle cell; 

 Lanceolate cell on superior wings, with a slightly oblicjue cross vein. 



1. E. (DoLERUs) IXORNATUS. Say. Long's 2d Ex.319, 1. "Body 

 black, polished ; feet white ; tarsi dusky. Length one fourth of an 

 inch. 



? . Labrum and palpi whitish ; thorax, with a line before the wings 

 and wing scale white ; scutel with a small bullate white spot on each 

 side ; wings a little dusky ; nervures blackish-fuscous ; pleura with an 

 abbreviated white line over the intermediate feet ; coxas color of the 

 feet." Inhabits United States. 



I have examined seven specimens from Massachusetts and Connec- 

 ticut, of which two are males. They resemble the females, except 

 that the antennae are shorter and the body more slender. 



2. E. APERTUS. H. Cat. Black, with rufous spots on the tergum ; 

 the venter and legs white. (? <5 . Long 0.19 to 0.25, Ex. alar. 0.36 

 to 0.44 in.) 



? . Black ; a suture running back from ocelli, ridged on each side ; 

 antennae slender ; clypeus, slightly marginate ; clypeus, labrum, mandi- 

 bles, except at tip, and the palpi, white ; wing scale, upper half of 

 collar, apical segment of tergum, a line above intermediate legs 

 and the venter, except at apex, white ; tergum, with rufous or honey- 

 yellow spots at base of each segment, joining each other on the 

 fourth, fifth, sixth, and seventh segments ; legs white ; apex of 

 posterior tibise and tarsi blackish ; wings hyaline , junction of stigma 

 and costa white. 



$ . The male is Kke the above, except that the antennse are fer- 

 ruginous beneath ; apex of venter pale, base black. H:\b. Mass. 

 (H. Coll.), Easton, Pa. (Dr. Clemens.) 



Three specimens examined. 



3. E. MELLiPES. H. Cat. Black, long, and slender ; a spot on first 

 and a band on fifth segment of abdomen, white. (Long. 0.34, Ex. 

 alar. 0.58 in.) 



? . Black ; antennae slender ; apical joints pale beneath ; head as 

 wide as thorax ; a crescent-shaped sinus back of ocelli, a spine be- 

 tween antennae ; clypeus deeply emarginate ; mandibles piceous ; 



