Tue CrANE-FiiEsS or New York — Part II 991 
disk and lobes unmarked. Spiracles small. Anal gills branched. Mandible small, with 
but a single dorsal and ventral tooth in addition to apical point. Mentum with nine teeth. 
Hypopharynx five-toothed. 
Pupa.— Antenna short, ending opposite tips of maxillary palpi. Sheaths of maxillary 
palpi not recurved at tips. MMesonotum unarmed. Pronotal breathing horns very long and 
slender, one, at least, about half length of body. Wings showing clearly the characteristic 
venation of Longurio. Abdomen elongate, posterior ring of individual segments with short, 
stout spines, including a few on pleurites; dorsum of eighth segment with four powerful lobes. 
Longurio is a small genus including about ten described species, of 
which two occur in eastern North America. The genotype, Longurio 
testaceus, is the best-known species locally. The immature stages of this 
species are here discussed for the first time. They are spent in sand 
or sandy earth. The branched anal gills of the larva, and the excessively 
elongate breathing horns of the pupa, are notable features. 
Longurio testaceus Loew 
1869 Longurio testaceus Loew. Berl. Ent. Ztschr., vol. 13, p. 2. 
Longurio testaceus is probably the largest crane-fly in North America, 
the females exceeding the better-known Holorusia of the Western States. 
The adult flies are difficult to capture, being very wary. When the insect 
is at rest the body generally hangs perpendicularly, with the wings folded 
incumbent over the abdomen. 
On November 9, 1916, Mr. Hyslop sent the writer two living larvae 
which are referred with little doubt to this species. They were found 
in wet sand in a bog on the top of South Mountains, near Myersville, 
Maryland. The larvae were very restless, the head capsule being con- 
stantly exserted and withdrawn. Waves of contraction start from the 
y Dr. J. C. Bradley at Tallulah Falls, Georgia, on June 17, 1910, 
ndoubtedly belongs to this species, the venation being clearly apparent 
n the wing pad. An additional cast pupal skin is in the collection 
f the United States National Museum. 
Larva (supposition).— Length, 31 mm. contracted, 58 mm. extended. 
Diameter, 11-12.5 mm. 
Color whitish, subhyaline; thoracic segments more yellowish; in life the brown food contents 
howing clearly thru abdomen. 
Form very depressed, lateral folds prominent; body very stout and fleshy. Skin very thin 
nd semitransparent, showing internal organs within, practically destitute of pubescence; 
