Eighth Report of the State Entomologist. 



147 



The Larva Described. 

 The following description is extracted from Dr. Riley's Entomolog- 

 ical Report for the year 1885, together with the accompanying figures: 



Length 4'"°* to 4.5™™. Color, pale yellow 

 very faintly reticidated. Breastbone 

 pale brownish, its apex broadly bilobed. 

 (In the figure it is represented as rather 

 too long for its width.) Body (thirteen 

 joints and subjoint) fourteen-jointed, 

 exclusive of the head. Antenna two- 

 jointed. Anal subjoint much narrower 

 laterally than the penultimate, slightly 

 concave, the concavity beset with six 

 (three each side) small, fleshy tubercles 

 (the two middle ones are not shown in 

 the figure), of which the second one on 

 each side is stoutest, those on the ex- 

 ternal angles bearing each a short spine. ^^^ 

 Spiracles normally placed and mounted 

 on tubercles. 



Surface polished and 



The pear-tnidgre: a, dorsal view of 

 th larva; b, side view; c, head and front 

 seg:ments; d, last se2r'"«'nt; e, "breast- 

 bone "— all much enlarged. 



Entering the Ground for Pupation. 

 Pears received from Catskill, thi'ough the kindness of Mr. Cole, 

 on the 30th of May, after they had been exposed to a heavy rain and 

 were cracking open freely, were already giving out their larvae very 

 abundantly. About five hundred of these were given common earth 

 in a flower pot, which they speedily entered. The pot was buried in 

 my garden, with its top at the surface of the ground, where it will be 

 left until the coming spring under conditions natural to the insect. A 

 still larger number were given, on June 8th, damp molding sand for 

 burial, as offering facilities for their occasional observation. A jar of 

 these containing two hundred was carefully examined a week thereafter 

 (June 15th), when a single cocoon was found at the depth of a half- 

 inch, several at one inch, a number at one inch and a half, thence to 

 two inches a large number, and to two and one-half inches quite as 

 many; below this none were found. All but four of the larvse had 

 made cocoons, and these had evidently received some harm. It may 

 be inferred from the above that in ordinary soil, not as penetrable as 

 the molding sand, the larvae ordinarily bury at a depth of between one 

 and two inches. A cocoon opened July 6th contained the larva with 

 a thin pellicle attached to its terminal end which had apparently been 



cast off by it. 



Pupation. 



The pupation is within an oval cocoon, composed (in the above) of 

 grains of the sand united and lined with yellowish silk, somewhat flat- 



