262 ENTOMOLOGICAL NEWS. [October. 



ceded by a rather long and slender process externally. The inner lobe 

 is four-jointed and very heavy in proportion to the rest of the maxilla, the 

 joints being very shortly bristled at their tips. The mentum presents the 

 form shown in the figure, the palpi are stout, with a very minute terminal 

 joint. Prothorax transversely elliptical, front margin slightly reflexed and 

 thickened, disc with a median impression more distinct at base, on each 

 side of which is situated a rather large shallow fovea. Meso- and ineta- 

 thorax shorter, less corneous. Abdomen of nine segments, the terminal 

 one bearing at tip two conical pointed processes directed backwards, at 

 the base of these are several small bristle-bearing tubercles; anus tuber- 

 culate. Spiracles prominent, exserted, in nine pairs of which the first is 

 near the hind angles of the mesothorax, the remainder in segments one 

 to eight of the abdomen. Legs rather short, coxae neafly conical, tro- 

 chanters distinct, claws simple. There are only a few bristles on each 

 joint. 



These larvae were taken under bark at Bayfield, Wis. , on the 

 third of July. They went under ground to change to the pupa, 

 each making a small cell by squirming, after the manner of Ca- 

 rabid larvae. The pupa is 4 mm. in length, and except for being- 

 much flatter, is not unlike that of Cyllodes biplagiatus in form. 

 The posterior legs are entirely covered by the wing pads, the 

 prothorax has strong bristles on the dorsal region and all the 

 abdominal segments, except the last have each a lateral spine, 

 longer on those near the tip of the body. The terminal seg- 

 ment has two horny tubercles or short spines at apex. 



The larvae differ somewhat in the proportions of length to 

 breadth, many of them being longer in proportion than the figure. 



Cyllodes biplagiatus Lee., fig. 3. Color of larva white, head darker. 

 Form somewhat maggot-like, nearly cylindrical in life, tapering to both 

 ends; consistence soft. Length 8 mm. 



Head small, corneous, narrowed anteriorly, and with a moderately deep, 

 longitudinal, slightly oblique impression behind each antenna, reaching 

 to the base. Antennas four-jointed, the first joint heavy, stout, second 

 shorter and much narrower, third longer and bearing two small, terminal 

 joints, similarly to what is seen in the larva of Lpipocns; there are no. 

 bristles. Maxillae with the inner portion broad, very bristly, the outer 

 part with four distinct joints, gradually decreasing in width, and a very 

 small acicular fifth joint. The only spines are a few very minute ones 

 around the tip of the fourth joint. Mandibles serrate on both external 

 and internal edges, the former with about ten teeth, the inner with half 

 that number. A basal piece, just internal to the mandible proper is of 

 firmer consistence, and also toothed along the end, bearing besides a feu 

 short bristles. Labial palpi short, two-jointed, the basal joint much largrt 



