924 Charles Paul Alexander 



organic mud that is usually covered over with a layer of leaf mold. On 

 March 27, 1914, the writer found four lai'ge l)rown eriopterine larvae in 

 rich earth from Needham's Glen, Ithaca, New York. An adult female 

 of the present species emerged on April 9. This makes the maximum 

 pupal existence less than two weeks, bu,t it is undoubtedly very much 

 less than this. 



Larva. — Length, 11. 5-11. S mm. 

 Diameter, 1.1-1.2 mm. 



Color a deep reddish or cinnamon brown; incisures of segments paler. 



Form rather stout, body terete. Skin covered with a short, appressed pubescence. 

 Spiracular disk (Plate LXX, 375) squarely truncated, surrounded by five subequal lobes; 

 ventral lobes with two parallel dark brown lines which are narrowly united distally, the pale 

 stripe between rather broad, distinct, especially near center of disk; lateral lobes with two 

 parallel dark brown stripes which are indi.stinctly connected distally, the space between 

 dusky with numerous brown spots; dorsal lobe with an elongate-oval mark inclosing a linear 

 yellow center; lobes fringed with long hairs which are longest at tips, shorter toward base, 

 and narrowly interrupted between lobes; di.sk between spiracles unmarked. Spiracles large; 

 middle piece and extreme outer margins of ring blackish; spiracles separated by a distance 

 about equal to one and one-half times diameter of one. 



Head capsule about as in Molophilus, but ventral bars of capsule not toothed to form 

 the characteristic mental plate of that genus. Labrum and epipharynx about as in Molo- 

 philus. Hypopharynx broad, flattened, provided with numerous transverse rows of short 

 setae. Antenna short; basal segment stout, cylindrical; apical papilla rather small, 

 elongate-oval. Mandible (Plate LXX, .374) ending in a rather long apical point, with about 

 four long, flattened teeth along ventral cutting edge, the second from base very small; a short, 

 recurved hook at prosthecal region and a den.se tuft of long yellow hairs in prosthecal slit; a 

 dorsal appendage at heel of mandible. Maxilla about as in Molophilus. 



Pupa. — Length, 7.5 mm. 



Width, d.-s., 1.2 mm. 

 Depth, d.-v., 1.4 mm. 



Head, thorax, and appendages pale yellow; breathing horns yellow; chitinized plates on 

 mesonotum dark brown; abdomen brown. (In mature pupae, the sheaths of the appendages 

 are probably darker.) 



Cephalic crest (Plate LXXI, 381) low; lateral angles produced into conical, erect, 

 spinous tubercles, each bearing a stout seta on outer ventral face. Antennal sheaths very 

 angulated, almost serrate. Opposite each segment of antenna on basal half of organ, a 

 conspicuous blackened tubercle, tho.se at base larger and more con.spicuous, the lateral one 

 directed outward, above it a second tubercle directed cephalad and simulating a crest. 

 Antenna extending to just beyond base of wings. Front broad; a blackish area on either 

 side near inner margin of eye, probably indicating point of attachment of tentorium. Labrum 

 triangular, apex subacute. Labial lobes triangular, tips blunt. Sheaths of maxillary palpi 

 rather long, narrowed to the slender tip. Pronotal breathing horns short and slender, some- 



