THE CRANE-FuIEs oF New YorkK — Part II 925 
hat flattened, pale yellow; a stout seta just before base of each breathing horn. Mesonotum 
recipitous; at crest (Plate LX XI, 380) on either side of median line, a heavily chitinized 
attened plate projecting dorsad; this plate, at its tip, forking into two lesser teeth, the 
ateral one of these still further subdivided into two still smaller teeth (in one specimen 
he left plate is divided dichotomously into four teeth, the inner primary tooth being further 
ubdivided); on shoulder laterad of these plates a slightly swollen plate which is parallelly 
ooved; two spines on lateral angle of thcrax above base of wing; mesonotum with a few 
etae behind crest, as follows: an anterior solitary seta cn either side of median line and close 
0 it, a solitary stout seta above wing axil, two groups of paired setae, one just dorsad of base 
f wing and the other midway between this group and the anterior seta first described. Wing 
jheaths rather short, ending opposite base of third abdominal segment. Leg sheaths rather 
ong for this genus, ending opposite midlength of fifth abdominal segment; fore tarsi a little 
horter than hind tarsi, middle tarsi very short, ending opposite or Just beyond end of third 
arsal segment of fore legs. 
Abdominal segments near posterior margin with transverse rows of short black spineg 
hich are much smaller and more widely separated near ends of row; at intervals alona 
ow a few elongate setae; on pleura a similar area of eight to eleven spines with a single sets 
n row; tubular lateral spiracles on segments 2 to 7. Chaetotaxy as follows: on pleura, just 
bove dorsal end of row, one seta, another solitary seta cephalad of spiracle on anterior 
ing; on tergites, a solitary seta on postericr ring about opposite spiracle; on sternites, two 
mall setae on either side of median line of posterior ring. Female cauda (Plate LX XI, 382) 
ith tergal valves long and slender, almost straight but slightly upcurved near tips; on 
orsal lateral margin, just before tip, a prominent tooth directed laterad and slightly caudad; 
Sout midlength of valves a somewhat similar blunt tubercle on either side near dorsal margin; 
t base of eighth tergite a pentagon of five chitinized lobes, the anterior one rudimentary, 
he four developed lobes ending in acute chitinized points and each bearing a subapical 
eta; anterior pair of lobes more widely separated and bearing on lower side near base a 
mall, slender lobule. 
Nepionotype.— Ithaca, New York, March 27, 1914. 
Neanotype.— Ithaca, with type larva, April 9, 1914. No. 2-1914. 
Paratypes.— With types. 
rmosia innocens (O. 8.) 
1869 Rhypholophus innocens O. 8. Mon. Dipt. N. Amer., part 4, p. 142. 
Ormosia innocens is a characteristic early spring species, the adult 
ies being found in late April and during May. On May 12, 1917, a 
ew pupae in an advanced stage of development were sifted from organic 
ud from Bool’s hillside, Ithaca, New York. One of these emerged as 
n adult on the following day. The associated crane-fly larvae that 
ecurred with this species on the date named were as follows: bettaco- 
orphella jonesi, Dicranomyia stulta, Limnophila adusta, lL. fuscovaria, 
Ulomorpha pilosella, Penthoptera albitarsis, Rhaphidolabina  flaveola, 
