918 CHARLES PauL ALEXANDER 
on dorsal face of eighth segment, a close quadrangle of four rounded tubercles, placed o 
a slight elevation. Female cauda with tergal acidothecae elongate, subacute at tips; stern 
valves short, blunt; quadrangle of tubercles on dorsum of eighth segment more distinc 
than in the male. 
Nepionotype.— Ithaca, New York, May 14, 1917. 
Neanotype.— Ithaca, June 5, 1917. 
Paratypes.— Larvae and pupae in large numbers {rem type locality, May 14 to June 
1917. - 
Erioptera chlorophylla O. 8. 
1859 Erioptera chlorophylla O. 8. Proc. Acad. Nat. Sci. Phila., p. 226. 
Erioptera chlorophylla is conspicuous by its pale green color in th 
larval, pupal, and adult stages. It isa common and widely distribute 
species thruout eastern North America. Several larvae were found i 
organic mud at Orono, Maine, on June 13, 1913, one of which pupate 
on the 21st. When the insect is dropped into boiling water, the gree 
color immediately disappears. The associates of this species are discusse 
under the account of Ptychoptera rufocincta (page 775). 
Larva.— Length, 9-10 mm. 
Diameter, 0.7-0.75 mm. 
Color uniformly pale green, fading to a pale yellow after death. 
Form moderately elongated, last segment of body elongate, gradually narrowed to bluntl 
rounded apex. Body clothed with numerous appressed hairs. Spiracular disk somewha 
as in E. megophthalma but even more reduced, disk usually entirely closed, lateral lob 
on either side capable of close approximation, tracheae before the opening into spiracl 
very large. 
Head capsule (Plate LX VIII, 364) of the Molophilus type, but longer and slenderer; th 
two dorsal bars of each side very delicate, the ventral bars broader and flattened. Menta 
plates (Plate LXVIII, 365 and 366) slender; anterior end of each ventral bar widel 
expanded and provided with several teeth; these teeth varying in number, in some speci 
mens there being only five, in others eight, teeth to each plate; in the latter case the thir 
from either side is larger, with two smaller teeth between. Hypopharynx about as i 
Molophilus. Antenna (Plate LXVIII, 367) large, basal segment stout, cylindrical; apic 
papilla elongate-oval, with apex bluntly rounded and surface weakly sculptured; laterad o 
this papilla a tiny cylindrical hyaline peg. Mandible (Plate LXVIII, 368) rather large 
cutting edge with about four slender teeth, the second from base the smallest; dorsal fae 
of mandible with a blunt subapical tooth and an oblique comb of about six stout setae o 
chitinized teeth. Maxilla similar to that of Molophilus, but the hairy vestiture longer an 
coarser. 
Pupa.— Length, 8.8-9 mm. 
Width, d.-s., 1.2 mm. 
Depth, d.-v., 1.2 mm. 
