380 



notch on outer margin rather small; clear area surrounding palpi 

 much larger than in Dasyllis sp. ? ; posterior rods very compact, ap- 

 pearing as a single broad plate when viewed from above (PI. LV, 

 Fig. i). 



Ptipa (PI. LIV, Fig. 8). — Length, 17 mm. Yellowish testaceous, 

 armature dark brown. 



Upper cephalic thorns strong, much thickened at bases, acute and 

 slightly curved downward at apices, separated by about their own 

 length; lateral cephalic thorns 5 in number (Fig. 8) ; face unarmed. 

 Thoracic spiracles distinctly elevated, the opening compressed (Fig. 

 6) ; spine at base of middle leg and in front of wing-base stout, 

 short, and acute at apex ; tubercle above base of wing carinate ; wings 

 extending to middle of second segment; apices of fore tarsi extending 

 beyond apices of wings; mid tarsi with pulvilli large, their bases at 

 apices of wings and their apices midway between apices of fore and 

 hind pairs; hind tarsi extending nearly to apex of third segment of 

 abdomen, the puvilli very large. Abdominal spiracles elevated, of 

 moderate size, uniform; basal dorsal segment with 6-8 strong back- 

 wardly curved thorns in a transverse series ; segments 2 to 8 each with 

 a transverse series of 6 strong thorns, between the pairs of which and 

 for a short distance laterad of the outermost one on each side are i 

 or 2 much shorter stout thorns, the apices of which are often bifid or 

 trifid ; segments 4-8 have in addition to thorns already mentioned 4 or 

 more long bristles on lateral portions of series; apical segment with 

 4 subequal thorns, 2 above and 2 below, which project almost straight 

 backward (Figs. 3, 4) ; postspiracular thorns 4-6 in number; ventral 

 segments 1-3 without armature, the others with bristles in a trans- 

 verse series near posterior margin, those on fifth and sixth segments 

 sparse, the others very closely placed. 



Described from one larval exuvium and two pupae submitted by 

 J. A. Hyslop, which bear the following data: Wolfville, Md., May 

 14, 1914 (P. 125), and Wolfville, Md., larva collected November, 

 191 3, pupated prior to June i, 191 4, adult emerged June 18, 19 14. 



DasyIvUS Loew 



I have before me a young larva which I consider as probably be- 

 longing to this genus, and a full-grown larva, portions of a larval 

 exuvium, and two pupal exuvia, — all of a species that undoubtedly 

 belongs here. 



