Tuer CrANE-FLIES oF NEw York — Part II 901 
of same side; anterior margin of each half with three slender, flattened teeth, the middle one 
of which is slightly the shortest. Hypopharynx conspicuous, labriform; anterior margin with 
a deep notch to form distinct lobes at lateral angles, and with several rows of small chitinized 
tubercies. Antenna (Plate LXI, 313) small; basal segment elongated, slightly curved, a 
circular auditory plate near base, at tip with numerous papillae, two of which are very long, 
nearly as long as segment itself; in addition to these, three or four tiny cylindrical papillae. 
Mandible powerful; ventral cutting edge with a row of about four teeth which are succes- 
sively enlarged from tip to base; basal tooth very broad and flat, with outer margin truncate 
or slightly concave; teeth on dorsal cutting edge indistinct; a pencil of moderately delicate 
setae on scrobal region of mandible, and another at prosthecal region. Maxilla elongate; 
outer lobe larger than inner lobe, chitinized, apex with a very flat circular palpus (Plate 
iXI, 314) which is provided with a few disklike papillae around margin and a few scattered 
sensory papillae over pale apex; inner lobe with a long, powerful seta on ventral face and 
smaller setae. near tip. 
Nepionotype.— Ithaca, New York, June 1, 1917. 
Paratypes.— Larvae from type locality. 
Genus Rhaphidolabina Alexander (Gr. diminutive of Rhaphidolabis#) 
1916 Riaphitolabina Alex. Proc. Acad. N2t. Sci. Phila., p. 540-541. 
Larva.— Body covered with an abundant, appressed pubescence and tufts of erect hairs 
which are more numerous on anterior end of body. Creeping-welts on dorsal and ventral 
surfaces of abdominal segments 4 to 7. Spiracular lobes two, moderately elongated, each 
with about six hairs at tip. Spiracles iarge. Anal gills four, long and diaphanous. Head 
capsule long and massive. Mandible powerful. Antenna short, with two elongate papillae. 
Hypopharynx labriform, anterior margin concave. Mentum completely divided, each half 
with three large teeth and a much smaller lateral tooth. 
Pupa.— Labrum truncate. Pronotal breathing horns short-cylindrical or slightly flattened. 
Abdominal segments with circular areas of spicules on pleurites. Intermediate tergites with 
a broad transverse band of tiny spines. 
The genus Rhaphidolabina includes only R. flaveola, a curious pallid 
fly of the northeastern United States, serving as a connecting link between 
Tricyphona on the one hand and the Dicranotae on the other. The 
adult flies are common on rank vegetation in cold woods. The immature 
stages are spent in rich organic earth in the same situations as are fre- 
quented by the adult flies. 
Rhaphidolabina flaveola (O. 8.) 
1869 Rhaphidolabis flaveola O. S. Mon. Dipt. N. Amer., part 4, p. 288. 
The writer has found the larvae of Rhaphidolabina flaveola in Maine 
and in New York. At Orono, Maine, larvae were numerous in the rich 
