920 CHARLES PAUL ALEXANDER 



brown; abdomen whitish yellow, posterior half of each sternite and tergite dark brown, 

 basal half with two narrow transverse lines of same color. 



Lobes of cephalic crest widely separated, subtriangular, acutely pointed at tips. Pronotal 

 breathing horns cylindrical, transversely wrinkled, tapering gradually to tips. (In the only 

 specimen at hand, the horns are widely separated at the base but soon bend proximad and 

 thence outward and ventrad, so that the two horns are closely approximated or almost 

 contiguous on their distal parti.) Behind breathing horns, mesonotum with conspicuous 

 divergent lobes such as are described for E. chlorophylla; mesonotum at crest with abundant 

 black setiferous tubercles, which are fewer in number, smaller, and more scattered along 

 shoulder, interrupted at mid-dorsal line. Hind legs a little longer than fore legs, which, 

 in turn, are a little longer than middle legs. 



Abdominal segments with subterminal armature of posterior ring more spinous than in 

 E. chlorophylla. Distribution of setae about as in E. chlorophylla. 



(Described from a pupa taken at Orono, Maine, June 24, 1913.) 



Erioptera septemtrionis O. S. 



1859 Erioptera septemtrionis 0. S. Proc. Acad. Nat. Sci. Phila., p. 226. 



Erioptera septemtrionis is a widely distributed species thruout the 

 northeastern United States and Canada. The larvae are not uncommon 

 in rich organic mud in cool, shaded woods. The writer found them 

 commonly in the Standpipe Woods, Orono, Maine, in July and August, 

 1913. A larva placed in rearing on July 3 transformed to an adult female 

 on the 16th. Other larvae placed in rearing on July 15 transformed to 

 adult males on the 25th. This limits the pupal duration to not more than 

 ten days, but it is probably much less, presumably about one week. 



Pupa. Length of cast skin, 7 mm. 



Cephalic crest low and flat. Antennal sheaths moderately elongated, individual segments 

 showing clearly thru sheaths. Pronotal breathing horns elongate, cylindrical, almost straight 

 but slightly diverging, transversely wrinkled, paler at tips, with a row of small breathing 

 pores along apical margin; a few small setiferous tubercles before base of breathing horns. 

 Declivity of mesonotum rather steep, at crest with numerous small tubercles and abundant 

 pale yellow hairs which are less numerous along shoulder. Leg sheaths with middle pair 

 conspicuously the shortest, as in the genus. 



Abdominal segments with subterminal armature of posterior ring consisting of stout, 

 pale setae; arrangement of these setae about as in E. chlorophylla. Lateral spiracles distinct. 

 Male cauda (Plate LXIX, 371 and 372) with the ventral lobes blunt at tips, obliquely 

 truncated, separated by an acute V-shaped notch; dorsal lobes separated by a U-shaped 

 notch, each lobe terminating in a small tip, with two tiny setae on lateral face before 

 apex; dorsum of eighth segment with four prominent, pale, fleshy lobes which are closely 

 approximated, the anterior pair directed laterad and a little more distant from each other 

 than the posterior pair, which are directed more dorsad. 



Neanotype. Orono, Maine, July 25, 1913. No. 105-1913. 



