THE CRANE-FLIES OF NEW YORK PART II 805 



pharynx are shown diagrammatically and separated; in some specimens the lateral teeth are 

 more acute, in others they are more rounded.) Antenna (Plate XXI, 65) elongate, cylindrical, 

 chitinized, apex pale, with two long, sensory setae and a few papillae. Mandible (Plate XXI, 

 63 and 67) strong, flattened, with two powerful bristles on back, or scrobal region, near 

 base; inner face concave, tip ending in a long tooth, dorsad of apex a single smaller tooth, 

 ventral cutting edge with four gradually smaller teeth, beyond the last of which the margin 

 is crenulated into four or five indistinct carunculations; viewed from inside, lateral teeth 

 appearing blunt. Maxilla (Plate XXI, 63) large, consisting of two elongate-oval lobes, the 

 inner one densely hairy; palpus, borne at tip of outer lobe on ventral face, shaped like one- 

 half of a cylinder split lengthwise, several tiny hyaline sense pegs at apex; laterad of palpus 

 and nearer base of outer lobe, a small elongate sensory tubercle with hairs at apex; inner 

 lobe of maxilla subequal in size and length to outer lobe, but more densely hairy; on its ventral 

 face, four or five long sensory tubercles which are expanded at their ends into setiferous heads; 

 at base of maxilla, a long, slender arm with three setiferous punctures at apex and another 

 puncture at about two-thirds length; setae of this arm very long and delicate. (A dorsal 

 view of the larva is shown in Plate XX, 57.) 



Pupa. Length to tip of cephalic crest, 6.2-6.8 mm. 

 Width, d.-s., l'.4-1.5 mm. 

 Depth, d.-v., 1.1-1.2 mm. 



Head, thorax, and sheaths of appendages dark brown in fully colored individuals; abdomen 

 pale yellowish white; terminal hooks of abdomen heavily chitinized. 



Head on margin above eyes with a blunt median lobe and on either side a small but prom- 

 inent tubercle; gena gibbous. Compound eyes large, semicircular in outline. Front between 

 eyes with margins almost parallel. Labrum with apex truncated or indistinctly bilobed. 

 Labial lobes broad, appearing subtriangular. Sheaths of maxillary palpi not greatly 

 elongated, slender, cylindrical. 



Pronotal breathing horns (Plate XX, 61) flattened at base, each arcuated basally behind, 

 bending laterad to form a concave hollow in front; base dark brown, chitinized, branched 

 into eight long, pale filaments which are grouped more or less in pairs; the two ventral and 

 the four dorsal filaments arising from a short common base, the other two being separate 

 for their entire length; these filaments as long as, or longer than, antennal sheaths, varying 

 in length from rather short to a longer type. Thoracic dorsum broad, ample, feebly wrinkled 

 transversely. Leg sheaths (Plate XX, 60) with all the tarsi very long and slender, reaching 

 almost to end of fifth abdominal segment. Wing sheaths comparatively narrow, reaching 

 base of third abdominal segment; anal angle sharp; venation fairly distinct. 



Abdomen pale. Intermediate abdominal segments divided into two annuli, the posterior 

 ring much the larger; dorsa of segments 3 to 6 (Plate XXII, 71), and sternum of segment 

 6, each with basal annulus tumid and with two transverse rows of small hooks converging at 

 the ends to inclose a linear depressed area; these areas capable of contraction, so that the 

 hooks of each row are united or approximated with those of the opposite row; from thirty 

 to thirty-five hooks in each row, anterior row with hooks directed backward, posterior row 

 with hooks directed forward; on seventh segment, only the anterior row of hooks present, very 

 slightly arcuated, the lateral hooks smaller than those near middle of row; caudad of this 



