THE CRANE-Furs oF New York — Part II 857 
_ The pupae of the group Limnophilae have the pronotal breathing horns 
usually small, or at least not greatly elongated. The abdomen is often 
ereatly depressed, with the lateral margins flattened and carinate and 
the segments incised. In the species of the subgenus Phylidorea the 
segments of the abdomen are armed with rows of long, slender spines. 
The group Ulomorphae seems to be closely related to the other members 
of the division, but the immature stages present some curious conditions 
which it is difficult to correlate with the same structures in the group 
Limnophilae. The writer has removed a group of species from the old 
genus Limnophila, and has placed these in the genus Pilaria Sintenis. 
In the larvae of the group Ulomorphae, the epipharynx and the maxillae 
are densely hairy. The maxillary lobes are slender. The mandibles 
are hinged at about midlength, the basal segment being concave on its 
inner face to receive the mandibular blade when in a position of rest. 
The mandibular blade has one, or sometimes two, elongate acute teeth 
at the base. The mental region is not chitinized. The spiracular disk 
is surrounded by four lobes, of which the lateral pair are often very 
reduced; the inner faces of the lateral lobes are capable of close approxi- 
mation, so that when they are closely applied the spiracles are contiguous. 
The pupae have the pronotal breathing horns very elongate, with their 
tips split into two flattened divergent lobes, as in Pseudolimnophila and 
a few tipuline forms. 
The following keys separate the genera and the subgenera of the subtribe 
Limnophilaria: 
Larvae 
1. Mental region not chitinized; maxillae and epipharynx fringed with conspicuous, long, 
golden-yellow hairs; mandibles hinged; head capsule with dorsal plate spatulate at 
SME (GROUPE LOMOnDRAE Ps SOO Jao aac hoces cso ce cr sci tieecoe eee nla eae: 2 
Mental region a narrow, transverse, chitinized bar, finely striate; maxillae and 
epipharynx without conspicuous hairs; mandibles not hinged; head capsule not as 
describediabovess (Groupliimnophilaespysoo)s-s.. ee ee oe ae one 3 
2. Length under 12 mm.; basal tooth of mandibular blade nearly half the length of blade. 
Ulomorpha O. 8. (p. 869) 
Length over 14 mm.; basal tooth of mandibular blade about one-third or less the length 
OW NING) 5 0.6 8: C5 FRE Re OEE OCR Sa et ne Pee Gea a Pilaria Sint. (p. 872) 
3. Spiracular disk almost squarely truncated, surrounded by five subequal lobes producing 
ANECHOP LENIN AP PCATANCCss jo si.bs.c 4. ss lect oe eres Dicranophragma O. 8. (p. 861) 
Spiracular disk obliquely truncated, surrounded by two pairs of lobes of which the latera 
(OE GHP BIRD Wa Sl arora ie a ANs nae Niele A ene Sa SU Re Nahe Care Ree a els Es erent dena 4 
4, Mandibles with two or three acute teeth at about midlength; epipharynx with a circular 
area bearing two biarticulate papillae....................-. Phylidorea Bigot (p. 866) 
Mandibles with three or four flattened and truncated teeth along blade; epipharynx 
HAUHOU PA pla elas aDOVElss acres citelieleiecieleercisteieloletele eletetels Lasiomastiz O. 8. (p. 863) 
