300 ENTOMOLOGICAL NEWS. [Nov., '04 



indicated, and this species is doubtless very difficult to rear in 

 confinement, dj'ing in a few days of vain efforts to escape. 



Adult exclusion was observed on 24 November, 1902. The 

 pupal integument is very thin. The wings are the last to be 

 excluded, and in order to free them, necessarily, the insect 

 has to bend sharply back, so that the dorsal portions of the 

 head approximate the dorso-caudal portions of the abdomen. 

 After exclusion, the body is pale, excepting parts of the head, 

 which are black. The normal colors appear after from two to 

 three days ; a short while after emergence, the minute elytra 

 become black-blue, remaining thus for a day or so. 



Larva : — Resembles the round-headed borers (e. g. Saperda), 

 but is much shorter and assumes a curled position. 



Pupa : — Long, straight, and regular in outline ; slightly 

 narrowing at thorax (lateral aspect) ; cerambycid in form ; 

 eyes pinkish ; tip of abdomen blunt, armed with small bristles, 

 with which the pupa can move about to a limited extent, 

 white. Length, .25 — .313 inches. 



When ready to molt, the hands of an artist only could come 

 anywhere near doing justice to its exquisite and delicate 

 beauty, its varying blends of color. The abdomen and 

 ground color of thorax are a strong straw yellow, while the 

 appendages are nicely shaded with blue ; eyes large and bright 

 brown ; tips of mandible reddish. 



The pupa is formed just under a thin expanse of bark, in a 

 small chamber, plugged with a mass of wood fibres. 



Parasite : — Parasites appeared from the infested twigs on the 

 15 February, 1903. They proved to be males of a new 

 Ptinobius, and were given the specific name dysphagae by Dr. 

 Ashmead, to whom they were sent for determination. I 

 advanced a doubt as to their being Dysphaga parasites, after 

 they were named, but as they are much too large to be paras- 

 itic on Scolytids, and as the Anthribids had disappeared the 

 previous fall, I think there can be, with reasonable certainty, 

 no doubt of it. Two (2) males were obtained; "the 9 

 should have spotted wings." ;{: Type in the United States 

 National Museum. 



% Letter U. S. N. M., 25 March, 1903, William H. Ashmead. 



