204 THE CANADIAN ENTOMOLOGIST 



fungi in a warm room for several weeks, pupae were finalh- secured. Most of the 

 larval feeding was done in the context, and it was here also that pupation took 

 place. 



Full-grown Larva. — Length 1.7 mm.; width 0.42 mm. Grub-like; slightly 

 curved when viewed laterally; subcylindrical, tapering slightly anteriorly; skin 

 somewhat wrinkled, creamy white except for mandibles and adjacent mouth- 

 parts which are dark; ocelli lateral, one pair and a single one above; body seg- 

 mentation distinct; body bearing a few scattered hairs; first thoracic segment 

 twice as long as second; remaining thoracic and abdominal segments subequal 

 in length ; ninth and last abdominal segment bears a dorsal pair of dark, strongly 

 chitinized, comparatively large hooks curved anteriorly; each leg terminated 

 by a fine curved hook. 



Pupa. — Length L22 mm.; width 0.48 mm. Creamy white, sparsely hair}-, 

 posterior end terminated by two parallel spines. 



Orchesia castanea Mels. 



This species was described by Melsheimer in 1846 (Proc. Phil. Acad. Nat. 

 Sci., Ill, 57). Blatchley (Coleoptera of Indiana) records it from Indiana in 

 woody fungi and Smith (N. J. State Mus. Rept. 1909) lists it from several 

 points in New Jersey from "hard fungi" on trees. 



During the first week of March, larvae of this species were plentiful in 

 Trametes suaveolens L., on willow at Kingston, N.J., and to a slight extent in 

 Lenzites betulina at New Brunswick, N.J. In view of this it appears that over- 

 wintering takes place in the larval stage. It undoubtedly breeds in other 

 species of fungi as Trametes suaveolens and Lenzites betulina are not what one 

 would call hard fungi, and as Schwarz (Psyche I, 1876, pp. 145-148) mentions 

 it as inhabitating a fungus growing on a dead beech. The larva feeds in the 

 context and tubes, and pupation, which requires about eight days in April, 

 occurs in the context. 



Full-grown Larva.- — ^Length 7 mm.; width 1.6 mm.; subcylindrical, slightly 

 curved when viewed laterally; sparsely hairy; segmentation distinct; creamy 

 white except for head and mouth-parts, which are brownish; antenna conical, 

 light, three-jointed, distal segment bearing two hairs on tip; ocelli lateral, five 

 in number, three in a row and two single ones posterior to them; first thoracic 

 segment one and one-half times length of third; second thoracic segment some- 

 what constricted medially; nine abdominal segments; ventral abdominal sur- 

 face wrinkled; legs three-jointed, each terminated by a dark, chitinized hook; 

 each leg bears a few spine-like hairs and a group of short spines on anterior 

 basal portion; spiracles on first prothoracic and abdominal segments one to 

 eight. 



Pupa. — Length 5-6.5 mm.; width 1.8-2.3 mm.; elongate, rounded an- 

 teriorly and pointed posteriorly; creamy white; head and prothorax bearing 

 numerous large and small acuminate spines each with a tuberculate base, each 

 spine bearing a long hair which arises just below the tip, the largest spines 

 occurring near lateral and anterior margins of prothorax; a pair of similar spines 

 occur on dorsal surface of second and third thoracic segments; each abdominal 

 segment bears a transverse row of dorsal spines, the largest ones being tnedian 

 and lateral; abdominal spines slant posteriorly; last abdominal segment bears a 

 pair of small hooks curved upward and anteriorly. 



