THE CRANE-FLIES oF NEw YorK — Part II 883 
. Ventral lobes of spiracular disk bearing one or two very long, dark setae in addition to 
the shorter yellowish fringe; inner face of each lobe with a capillary black line which 
is suddenly expanded at its inner end into a triangular brown mark, the two marks 
inclosing an oval pale area between their proximal ends; lateral lobes with a capillary 
I ackalincmmrrr sen ont een ns is ote ciclo ox hace hice ee E. fultonensis Alex. (p. 880) 
Ventral lobes of spiracular disk with apical fringe consisting of numerous long, pale setae; 
inner face of each lobe lined with pale brown, at about midlength gradually expanded 
into an elongate-triangular mark, the two marks inclosing a linear pale area between 
their proximal ends; lateral lobes with a brown line.....H. longicornis (Walk.) (p. 888) 
Pupae 
. Size large (length 25 mm. or over); pronotal breathing horns tapering to acute tips; 
cephalic crest small, reduced to four small tubercles; cell M; on wing pad present; 
a strong spinous tubercle on either side of median line at base of second abdominal 
GELOIHS HambU WENEIELOMICYVC), ose assyaicyo,o¥a sxe S08 idle aleve ee woestse eo ai E. spinosa (O. 8.) (p. 883) 
Size smaller (length under 18 mm.); pronotal breathing horns blunt at tips; cephalic 
crest prominent; cell M, on wing pad lacking; no tubercles on second abdominal tergite 
DTM CN CME PET TPES oe oer fae tess Ness slice ate cy serie fete ate iolsel tee. eal Suetes fcits Wociglinceile, Hisbeueds intel 2 
A tubercle on mesonotal scutellum...................... E. longicornis (Walk.) (p. 888) 
Hostubercleronsmesonotall/scutellum: 3.00.5.) shel «cise soko oe oo da vce dia eos a O 
Pleurites of abdominal segments with a transverse row of three setae ventrad and slightly 
caudad of spiracle; antennae of male elongated.............. E. cinerea Alex. (p. 886) 
Pleurites of abdominal segments with two stout setae dorsad and caudad of spiracls; 
ACen Ae SHOLEAMEDOLMYSEKES sa) casas cease see e ea esah oes E. fultonensis Alex. (p. 890) 
riocera spinosa (O. 8.) 
1859 Arrhenica spinosa O. S. Proce. Acad. Nat. Sci. Phila., p. 244. 
1869 Hriocera spinosa O.S. Mon. Dipt. N. Amer., part 4, p. 252-253. 
Eriocera spinosa is the commonest of the large species of the genus 
eastern North America. The larvae occur in great numbers beneath 
cks in rapid water in the autumn, when they form a considerable pro- 
rtion of the insect life in the streams. When about to pupate they go 
the neighboring banks and live for some time in the sand or gravel. 
he habits of the larvae have been discussed by Alexander and Lloyd 
914:16-17) and by Alexander (1915c: 149). 
The larvae were found on May 1, 1913, along the banks of Fall Creek, 
haca, New York, in considerable numbers. They were associated with 
ung and mature pupae of H. longicornis, which were emerging in great 
mbers at the time. On May 27, both larvae and pupae of H. spinosa 
re found to be very abundant, the larvae being more numerous in the 
tter places, the pupae in the drier spots. They occurred at various 
stances from the water’s edge, from within a foot of the margin to as 
back as eight or ten feet. The pupae are found in short, more or less 
rtical, burrows, from one to three inches below the surface. Not often 
