THE CRANE-FLIES OF NEW YORK PART II 905 



is given in connection with the discussion of Rhamphidia mainensis 

 (page 831). 



Larva. Length, 17-17.5 mm. 

 Diameter, 1.3 mm. 



Color pale yellowish white; anterior parts of body sometimes a more saturated yellow. 

 Form moderately stout, body a little narrowed toward ends; surface of body almost 

 glabrous, the vestiture being a microscopic pale pubescence and scanty scattered hairs. 

 Ventral surface of abdominal segments 4 to 7 with a prominent transverse welt, which is 

 hollowed out medially so as to appear as paired prolegs, these being unarmed with hooks 

 or points. Spiracular lobes short, divergent, tapering gradually to the blunt tips, which are 

 provided with seven or eight setae. Spiracles (Plate LXIII, 330) on a transverse oval eleva- 

 tion, small, rounded, separated by a distance greater than diameter of one; middle piece of 

 spiracles large, black, rings narrow. Anal gills four, very long and slender, constricted 

 into about four lobes which are successively narrowed from the base outward, the terminal 

 division very slender. 



Head capsule of the usual elongate, massive type of this tribe. Labrum large, projecting 

 beyond hypopharynx, anterior margin with long hairs. Mentum (Plate LXIII, 326) large, 

 completely divided, each half with three subequal narrow teeth and an additional reduced 

 lateral tooth; on proximal margin of each half of men turn, near base of innermost tooth, 

 a few tiny notches dovetailing into those of opposite half. Hypopharynx (Plate LXIII, 327) 

 projecting far beyond men turn, labriform; anterior margin deeply concave and provided with 

 small rounded papillae; lateral angles smooth, rounded, subchitinized. Antenna (Plate 

 LXIII, 328) small; basal segment cylindrical, bearing at its tip two elongate papillae which 

 are about one-half longer than basal segment alone; besides these an oval papilla. Mandible 

 (Plate LXIII, 329) of the usual pediciine type, powerful, the apex running out in a long, 

 curved point; ventral cutting edge very flat, cut into about five teeth, the two basal of which 

 are very large; the most basal of these teeth squarely truncated, the left mandible with an 

 additional small tooth on lower inner angle of this blade; the next outer tooth rather acute; 

 outermost teeth small and flattened; dorsal cutting edge, as usual with this division, with 

 two very small teeth located far out on apical point; a tuft of a few long setae on back of 

 mandible near heel. Maxilla (Plate LXIII, 329) powerful, as in this group of genera, 

 but not exserted from the prothoracic orifice when head is retracted; outer lobe very 

 stout, feebly chitinized basally, hyaline at apex, which bears the flattened, disklike palpus; 

 inner lobe slenderer, shorter, with a few setae and small papillae. 



Pupa. (The following notes are taken from the cast skins of the reared specimens.) 



Labrum with apex broadly triangular. Labial lobes large, ovate, tips narrowed and 

 bluntly rounded (Plate LXIII, 331). Pronotal breathing horns (Plate LXIII, 332 and 333) 

 very short, stout, roughly cylindrical, the apices truncated; in lateral outline, pentagonal, 

 with a row of breathing pores around margin of truncate apex. Thoracic dorsum trans 

 versely roughened by short, irregular grooves. 



Abdominal sternites with broad transverse bands of spicules on segments 5 to 7, the last 

 of these three bands the weakest; similar bands on tergites 4 and 5, these bands subequal 

 in size; pleural region with a large, roughly circular area of short rows of microscopic spicules, 



