THe CRANE-FLiIES oF New York — Part II 805 
pharynx are shown diagrammatically and separated; in some specimens the lateral teeth are 
more acute, in others they aremorerounded.) Antenna (Plate X XJ, 65) elongate, cylindrical, 
chitinized, apex pale, with two long, sensory setae and a few papillae. Mandible (Plate X XI, 
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. Mazxilla (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., 1.4-1.5 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 
