REPORT OP THE STATE ENTOMOLOGIST I9II 121 



Xylophagus lugens Loew. The large, carnivorous larvae of this 

 species, easily recognized by the elongate, heavily chitinized 

 conical head, were found at Nassau, N. Y., in decaying chestnut 

 bark from which Winnertzia pectinata Felt was subse- 

 quently reared. Two sizes of larvae were observed but they all 

 produced adults within a short time and probably represent vari- 

 ations in nourishment or possibly sexual differences. The larva 

 presents a close general resemblance to that of the allied 

 Xylophagus abdominalis Lw. occurring in decaying 

 pine bark, except that in the latter the three segments behind the 

 head are each well chitinized dorsally. 



Larva. Length about 2.5 cm, whitish or dirty white, the head 

 slender, conical, heavily chitinized and with a length greater 

 than the body diameter (plate 27, figure 4). The segment behind 

 the head is well chitinized dorsally, except for two narrow, ir- 

 regular sublateral lines. The next following has a pair of irregu- 

 larly subquadrate submedian chitinous plates. The incisures 

 dorsally and ventrally are marked by slight, median thickenings, 

 pseudopodous in character and bordered by a narrow line, in 

 places doubled, of chitinous points. Near the middle of each 

 body segment there is laterally a sparse group of four or five 

 rather long, fulvous hairs. Anal plate chitinized, produced as a 

 pair of submedian stout processes, each ornamented with several 

 long, fulvous hairs. The submedian anal spiracles are located 

 on this plate and are distinctly darker. 



Pupa (plate 27, figure 4). Length 1.5 cm, diameter 3.5 mm; 

 color dark brown anteriorly; including the first three abdominal 

 segments, the posterior segments yellowish brown. The an- 

 tennal cases are short, diverging, conical, reddish brown struct- 

 ures, with a stout cephalic horn at the external ,basal angle; 

 dorsum of thorax dark brown. Wing covers and leg cases dark 

 brown. Abdominal segments with a distinct, rugose, darker 

 thickening on the anterior and posterior margins, the latter with 

 moderately stout, rufous bristles laterally ; terminal segment 

 about half the length of the preceding, with a median process 

 or knob bearing a pair of stout, conical, diverging processes, the 

 latter apically with a fuscous, .chitinous spur. 



Psilocephala melampodia Loew. The white Dipterous larva 

 of this species was collected April 8, 191 1 under decaying pine 

 bark at Albany, N. Y. 



Larva. Length 2.5 cm, diameter 2 mm. Head small, chitinous, 

 light brown, the anterior extremity darker ; short, stout antennae 

 appear to be present. There are a few sparse setae on the ven- 

 tral surface of the head. Posterior margin of head with sub- 

 lateral fuscous markings which appear to unite in a fuscous 



