THE CRANE-FuIES oF NEw York — Part II 941 
Pupa.— Length of cast pupal skin, about 6.5-7 mm. 
Cephalic crest small, blunt. Labrum triangular, apex obtusely rounded. Labial lobes 
subcircular, outer margin rounded. Sheaths of maxillary palpi short and stout, at apex 
suddenly narrowed (Plate LX XVII, 414). Antennal sheaths angulated at segments, the 
organ extending to beyond base of wing. Pronotal breathing horns (Plate LX XVII, 413) 
with extreme base expanded, the neck short, constricted, soon passing into a greatly 
expanded and very compress2d disk, the whole suggesting a fan or certain polypores; margin 
of this disk entire or gently crenulated, and sloping from ventral side outward; surface finely 
nerved and reticulated. Mesonotum somewhat precipitous, crest (Plate LXXVII, 412) 
tumid, with rounded knobs arranged transversely along it, there being about eight isolated 
knobs and a more elongate one along shoulders, these knobs covered with minute blackened 
spicules. Lateral margin of thorax above wing root forming almost a right angle. Wing 
sheaths ending opposite base of second abdominal segment. Leg sheaths comparatively 
short, ending opposite base of fourth abdominal segment; fore legs a little the longest, middle 
legs conspicuously shorter than the others. 
Abdominal segments divided into two narrow basal rings and a broad posterior annulus. 
Armature of abdominal segments weak, posterior ring with a narrow row of small black 
spines before caudal margin; on basal ring a broad band of microscopic scabrous points 
arranged in interrupted transverse rows, there being about seven or eight of these rows 
to a band. Spiracles small but distinct. Female cauda with tergal valves short, but little 
longer than sternal valves, slightly upturned, ending in short, cylindrical tips; near base 
with a small, blunt tubercle on either side; dorsum of segment 8 with five rather long, pale 
lobes, the anterior pair more slender and more widely separated than the posterior pair, which 
are sometimes closely approximated. 
Neanotype.— Cast pupal skin, Ithaca, New York, October 19, 1915. 
Paratypes.— Three pupae with type. 
Gonomyia (Gonomyia) kansensis Alex. 
1918 Gonomyia kansensis Alex. Can. Ent., vol. 50, p. 158-160. 
Gonomyia kansensis is a prairie species of the cognatella group and 
appears to be common along the Arkansas and Kaw Rivers in Kansas. 
Living pupae were found at Larned on August 1, 1917, in sand along 
the banks of the Arkansas River, where they were associated with the 
typical sand-loving fauna, including Gelastocoridae, Saldidae, and Carab- 
idae (Omophron, Dyschirius, Bembidion, and Tachys). The observation 
of a small ant preying on a living pupa of this fly is discussed on page 
729. 
Pupa.— Length of cast pupal skin, 6 mm. 
Similar to G. aleranderi in most essentials but showing the following differences: anten- 
nal sheaths strongly angulate at segments; a tubercle on ventral face of antenna at base, and 
another at inner cephalic margin of eye. 
