THE CANADIAN ENTOMOLOGIST. 133 



Mature Larva after Hibernation. — Length one inch and a 

 quarter. Body pale pea-green, set with light brown hairs. Legs of the 

 same hue of green. Head green with six rows of brown dots ; indented. 

 Twelve greenish-brown spots along the back ; side-lines dark brown ; 

 spiracles black. 



After their revival the larvae ate little, if anything. They pupated 

 April 2 1 st. 



Chrysalis. — Length five-eighths of an inch ; greatest breadth one- 

 fourth of an inch. Head-case amber-coloured, with a brown dash on either 

 side. Wing-cases pea-green, outlined and streaked with brown. Thorax 

 prominent, abdomen conical, in colour pale yellowish green, with dorsal 

 line of darker green and numerous longitudinal rows of brown dots. 

 Extremity of abdomen rosy. 



The perfect insect appears in this locality from May 31st to June 15th. 



PARASITES ON DANAIS ARCHIPPUS AND ANTHOMYIA 



RAPHANI. 



BY C. P. GILLETTE, AGRICULTURAL COLLEGE, MICH. 



I am not aware that any parasites have ever been reported as attacking 

 the larvae of Da?iais archippus or the maggots of Anthomyia raphani. 

 However that may be, it will be of interest to the readers of the Ento- 

 mologist to know that last fall I obtained from a single chrysalis of D. 

 archippus over fifty specimens of a new species of Pteronialus. The 

 parasites came forth September 13, the chrysalis having been brought into 

 the laboratory a few days before, and inclosed with a bell-jar. Speci- 

 mens were sent to Mr. L. O. Howard, who has since described the species 

 and given it the name of Pteronialus archippi. 



The parasites from A. raphani belong to the genus Eticoila, and are 

 probably a new species also. A large number of pupae and full-grown 

 maggots of A. raphani were put in a jar containing earth, from which 

 the flies began to come forth June 9. The jar remained covered with 

 gauze until September 2, when the parasites began to appear, and in a kw 

 days eight specimens were obtained. 



In connection with the latter parasite it may be well to note the fact 

 that a red garden mite, a species of Trombidium, did excellent service 



