(>70 [December 



Tongue-case buried, parting the leg-cases, but terminating just before 

 reaching the tips of the wing-cases. Incisures rounded. Posterior 

 segments tapering. Stigmata black. Terminal spine black, contracted 

 at base, minutely bifid. Length, .95 in. — 1.10 in. Breadth, .30 in. 



It has been a very difl&cult species to rear — by far the larger number 

 dying in the pupa state. From perhaps twenty-five larvae, I have ob- 

 tained but four of the perfect insect. 



The Imago appears the middle of June, at which time I have taken 

 it, resting on the trunks of the Pine, in the grove, where only I have 

 met with it and the larva. 



Several years since, in the latter part of August, I found, feeding 

 on the black poplar {Popiilus nigra), two young Sphinx larvfe. of 

 which 1 made the following record : 



Length 1.25 in. ; color bluish slate, of about the shade of the branches 

 of the poplar. Head larger than the anterior segments, and more blue 

 than the body. Body gradually increasing in size to the tenth seg- 

 ment ; the eleventh segment elevated in a hump, bearing the caudal 

 horn, which is black, and one-tenth of an inch in length. Caudal shield 

 violet, bordered with red. Legs and prolegs red, the latter with a black 

 spot exteriorly. Stigmata broadly oval, black, annulated with white. 

 The body beneath yellowish-green. 



Unfortunately, both of the above had been injured by parasites, seve- 

 ral black spots being visible on their bodies, where the grubs had en- 

 tered, after escaping from the eggs which had been deposited on their 

 surface, — the shells of several of which still remained.* Died a few 

 days after they were taken. 



The shape of the larva would indicate a Smerinthus, but it was with- 

 out the characteristic granulations of that genus. The notes do not 

 mention lateral bands, and from my imperfect recollection of it. it was 

 neither marked with the bands or with longitudinal stripes. 



I record the above, in the hope that the larva may be successfully 



*I have, in several instances, saved the lives of rare Sphinx larvpe, by de- 

 stroying with the point of a knife or needle the parasitic eggs deposited on the 

 skin, appearing as small, flattened, oval, white spots. If not found before the 

 grubs have left the egg, and entered the body, the death of the larva or pupa 

 invariably follows. 



