THE CRANE-FLIES OF NEW YORK PART II 841 



colored and evidently nearly ready to emerge to the adult state. At 

 times the larval movements are very active and eel-like, but at other 

 times they are very slow and sluggish. At each movement forward, 

 the terminal segment partly telescopes into the subterminal and is thrown 

 violently backward. After transforming to the adult condition, the pupal 

 skin is left adhering to the sand, with the posterior half, or a smaller 

 portion, attached, often standing quite perpendicular to the surface and 

 very conspicuous. 



Larva. Length, 8.5-11.9 mm. 

 Diameter, 1.4-1.8 mm. 



Color dull white; head capsule very dark brownish black. 



Form moderately slender (Plate XXXIV, 145), but the body not greatly elongated as in 

 the Eriopterini and some Limnobiini. Integument covered with a fine, short pubescence. 

 Abdominal segments 2 to 7 each divided by a constriction into a narrow basal annulus and 

 a broad posterior annulus; basal ring at about midlength and at the end with narrow trans- 

 verse rows of tiny setae; abdominal segments 2 to 7 on ventral surface of basal ring with 

 conspicuous raised transverse creeping-welts which are covered with microscopic points; 

 eighth abdominal segment suddenly constricted before spiracular disk. Region around anus 

 protuberant, this evidently being an aid to propulsion. Spiracular disk (Plate XXXIV, 

 153) surrounded by five blunt lobes, of which the dorsal one is median in position and 

 blunter than the others; inner face of each lobe with a conspicuous brownish black mark; 

 a fringe of delicate blackish hairs surrounding disk, these hairs a little longer and more 

 prominent at ends of lobes. Spiracles almost circular, widely separated, the distance between 

 them being about three times diameter of one spiracle. Disk between spiracles with an 

 indistinct arcuated line. 



Head capsule (Plate XXXIV, 146) massive and compact, rather narrow, posterior incisions 

 not extending deeply into capsule. Prefrons very large, tapering gradually to a sharp point 

 behind; numerous setae on prefrons and on other sclerites of capsule. Labrum (Plate XXXIV, 

 147) large, conspicuous; epipharynx and lateral margins strengthened by narrow bands 

 of chitin; lateral and anterior margins of labrum with a dense fringe of long hairs; an irregular 

 tubercle on dorsal surface on either side of labrum; epipharynx with a narrow transverse 

 band of setae; juncture of clypeus and labrum with four setiferous punctures, two on either 

 side, the posterior pair a little the closer together; clypeal region with a dark transverse basal 

 and terminal band; base of clypeus with three setiferous punctures on either side. Mentum 

 (Plate XXXIV, 148) almost completely undivided, the usual median split obliterated except 

 behind; outermost mental plate terminating in three apical teeth, the median one of which is 

 a little shorter and broader than the other two; behind (dorsad of) outer plate, another similar 

 plate which adds three more teeth to each side of mentum. Hypopharynx not chitinized. 

 Antenna (Plate XXXIV, 149) very small, short, cylindrical or subglobular, about as broad 

 as long; at the tip two hyaline papillae shaped like immature mushrooms, the outer one 

 about twice the size of the inner one. Mandible (Plate XXXIV, 150 and 151) slender, ending 

 in a blunt, slightly curved, apical point; on ventral cutting edge a row of about five flattened 



