52 THE CANADIAN ENTOMOLOGIST. 



orifice slightly dorsal to the pair of stigmata, and a third less distinct 

 median stigma considerably removed ventrally from the pair. 



Described from two alcoholic puparia taken from galls collected near 

 Apache Spring, June 22, and containing pupae. 



The hymenopterous larva? and pupae which I found in the galls, June 

 22, and which are undoubtedly those of a parasite of the trypetid, con- 

 sisted of two small larvae, and a $ and $ pupa, the latter at once dis- 

 tinguished by the long ovipositor curved forward over her back. This 

 parasite seems nearly to equal its host in size. 



The larvae, in their partially curled position, measure 2^ to 3 mm. 

 long, and fully 2 mm. wide ; tapered suddenly toward head and quite so 

 toward anal extremity ; whitish, very pale dilute yellowish after immersion 

 for some months in alcohol, mouth parts blackish. 



9 pupa, 4 mm. long, \Vt, mm. wide; ovipositor curled forward over 

 back, reaching tip of scutellum ; after immersion in alcohol pale fulvous, 

 abdomen at base and eyes blackish. Ovipositor, in its curled position, 

 measures nearly 3 mm. 



$ pupa, 3 mm. long, scarcely 1 mm. wide ; pale fulvous, eyes 

 black. 



It should also be mentioned that there was bred from the galls 

 collected near Gallo Springs, June 2 r, a very small weevil less than 3 

 mm. in length, perhaps an inquiline in the galls. The galls were left 

 attached to very short pieces of the stems, but it is not likely that the 

 weevil came from the stems, which are very small. Moreover a careful 

 examination of the stems with a lens shows no exit hole whatever in 

 them. 



Note. — Since writing the above, I have found that Mr. Theo. D. A. Cockerell 

 records, on page 106 of West American Scientist, vol. 6 (Sept., 1889), the breeding of 

 a cecidomyiid "from woolly trypetid galls on Bigelovia.'" Mr. Cockerell has also 

 sent me a small gall of this species, with the following note: "Gall of Trypeta 

 bigelovicc, Ckll., Ent. Mo. Mag, 1890, West Cliff, Col." I have not seen Mr. 

 Cockerell's mention of this species in the Ent. Mo. Mag , and do not know whether he 

 described the fly or only the gall. At all events the discovery of the trypetid nature of 

 the gall belongs to him. When I named the trypetid as above, I did not know that 

 the same name had been proposed for the same insect by Mr. Cockerell. 



