926 Charles Paul Alexander 



Molophilus hirtipennis, Erioptera megophthalma, Ormosia nigripila, Tipula 



oropezoides, T. collaris, T. cayuga. 



Pupa. — Length, 7.5-10.5 mm. 

 Width, d.-s., 0.8-1 mm. 

 Depth, d.-v., 1-1.2 mm. 



(The smaller measurements are those of males, the larger those of females.) 



Head and thorax brown; mesonotum before declivity darker brown; abdomen pale yellownsh 

 white, the sternal and tergal sclerites with broad, rectangular, darker areas, producing a 

 banded appearance; breathing horns pale yellow. (In older pupae, the coloration of the 

 head and the thorax is much darker.) 



Cephalic crest of moderate size, bilobed; viewed from side, lobes blunt, with two lateral 

 setae; viewed from front, lobes separated by a very broad, V-shaped notch. Between antennal 

 bases, forehead longitudinally grooved, these lines converging between eyes. Ivabrum 

 triangular, subacute, separating the small labial lobes. INIaxillary palpi of moderate length, 

 tapering to blunt apices. Antenna of moderate length, reaching to just beyond wing base. 

 Pronotal breathing horns rather short and stout, almost straight and only slightly diverg- 

 ing, subcylindrical, compressed, and slightly constricted just beyond base. Meso- 

 notum precipitous, carinate medially; at crest (Plate LXX, 376) with numerous pale 

 hairs, these narrowly interrupted on median line; lateral angle of thorax with two tiny setae; 

 a strong seta slightly dorsad and cephalad of wing root; about four small setae in alinement 

 across mesonotum. Wing sheaths moderately broad, ending at or just before tip of second 

 abdominal segment. Leg sheaths short, tips of all the tarsi ending about on a level, or 

 those of fore legs a little longer, terminating just before end of third abdominal segment. 



Abdominal segments divided into two distinct annuli by a constriction at about mid- 

 length of segment; sternum and tergum of posterior ring of segments 2 to 8 near caudal 

 margin with large, rectangular, dusky areas which appear subchitinized; caudal margin of 

 this area with a fringe of long, black hairs, there being about seventy-five of these on inter- 

 mediate segments; on pleural membrane a very small, similar area bearing from twenty-five 

 to thirty-nine hairs, and near its dorsal margin a distinct black tubular spiracle on segments 

 2 to 7; the following additional setae on segments: on dorsal segments, rectangular darkened 

 areas with sparse scattered elongate hairs ov'er surface, and two setae on each anterior ventral 

 angle, their arrangement oblique; sternal segments similar, but the two setae on rectangular 

 area arranged transversely; just caudad of ends of fringe of hairs, one or two isolated hairs; 

 pleural membrane opposite basal annulus with a single seta; another seta opposite posterior 

 annulus near ventral margin; a third seta on ventro-cephalic angle of pleural setiferous 

 area just above level of spiracle; segment 8 on dorsum with five pale, gill-like lobes arranged 

 in a quadrangle or a pentagon, the anterior lateral pair the longest, the median one rather the 

 smallest; at base of anterior pair, two setae on cephalic face; at base of posterior pair, a 

 single seta on lateral face. Male cauda (Plate LXX, 377 and 378) terminating in two very 

 blunt ventral lobes and two separated, slender, dorsal lobes projecting caudad and dorsad. 

 Female cauda similar to male cauda, but tergal acidothecae very elongate, much longer than 

 sternal valves. 



Neanotype. — Tthaca, New York, May 12, 1917. 

 Paratypes. — Seven pupae, with type. 



