102 THE CANADIAN ENTOMOLOGIST. 



the same plant. The pro-legs and the ventral aspect of the larva are in 

 all cases chocolate brown throughout, deepening almost to black in the 

 reddish brown portion of the brood spoken of above. The legs proper 

 are jet black. The head is round and only partially retractile. The edge 

 of the fleshy fold of the first segment immediately behind the head is 

 minutely granulated with bright yellow. The spiracles are marked by 

 small black spots enclosing two minute white points. The caudal horn 

 is curved forward, and is covered with minute spiny processes. It is black 

 at the tip, the black color extending downward before and behind to the 

 junction with the body, but on either side at the base the horn is bright 

 yellow, gradually fading into the green of the surrounding cuticle. 



The larva spins a moderately compact cocoon among dried leaves at 

 the surface of the ground. The silk is deep brown in color. The chry- 

 salis is from seven eighths to nine eighths of an inch in length, smooth^ 

 long in proportion to its diameter, tapering to a fine point in the cremaster, 

 and dull black in color. 



Hemaris Thysbe, var. 7iniformis, G. & R. 



This form is common at Pittsburgh, and prevails altogether at Cresson, 

 Pa. , on the summit of the Allegheny Mountains. I have never found it 

 in West Virginia, North Carolina, and Southern Indiana, where I have 

 collected extensively. I have never received it from any of numerous 

 correspondents and collectors south of the Potomac and the lower Ohio. 

 Prof Fernald tells us that this variety is " common at Orono." May it 

 not be regarded as a peculiarly northern form ? 



Amphioji Nesstis, Cram. 



I have taken this species on several occasions at light, and it flies most 

 commonly at dusk in these latitudes. If found flying in the middle of the 

 day, I have noticed that it always keeps in the shadow, or slyly hovers 

 about among the thick masses of the Syringa blossoms, in the deep 

 umbrageous recesses, where it is not easily reached by the net of the 

 collector. 



Dareimna Unduiosa, Walker. 



The larva of this species feeds occasionally upon the white oak and 

 the red oak. 



Sphinx Oreodaphne, H. Edw. 



I have a specimen of this insect, taken by Mr. James Behrens, and 



