74 EDWARD NORTON. 



incomplete cross-line near the base ; lanceolate cell contracted. Under 

 wings two middle cells. Submaroiual bullae three, one quite long on 

 submarginal vein at reception of first recurrent nervure, one at base 

 of second, and a large one in middle of second transverse vein. The 

 position of another, usually the first transverse vein, is indicated by a 

 clear cross line. 



Aniennse nine-articulate, setaceous, the two basal articles short and 

 straight; the rest obliquely inserted and generally pectinate in males, 

 on one side of several articles; in the females, simple, with both some- 

 what pilose. 



Head transverse ; mandibles with one inner tooth in the middle, 

 below which are many little irregular teeth; maxillary palpi with the 

 fourth joint short, inner maxillary lobe sharp. 



Body short and stout. 



Legs simple, with two tibial apical spurs ; the inner one shortest on 

 anterior pair; the tarsal claws have an inner tooth. 



Larvse twenty-footed, the fourth and eleventh segments without 

 feet. The transformations of various European species have been 

 noted. Curtis states that the larvae of Cladius diffonnis remain on the 

 under side of the leaves of the China rose, eating small holes through 

 the leaves, and that they do not use the anal feet in walking. Dahl- 

 bom noted it on Salix viminalis. Hartig has noted the habits of se- 

 veral species, {Cladius eucera, on the Populus balsamifera and C. al- 

 hipes on the cherry, &c.) He states that they form a double cocoon 

 in the earth. 



Section 1 — Cladius, Ilartig. 

 Antennae of males with the lower half pectinate without; the inner 

 lobe of maxillse sharp, not membranous. 



1. C. isomera. 



Cladius isomera, Harris Cat. Norton, Best. Proc. viii, 1861. 22.3, 9 • 

 Shining black, witli wliitish tibisB and feet. Length 0.24. Br. wings 0.50 in. 



% . Antenme black, pilose, with outer branches on the third, fourth, 



fifth and sixth articles, (very short on the sixth), a blunt process on 



the third within, and the apex of the other joints acute within ; head 



polished ; a sinus behind each of the two upper ocelli, and a basin 



enclosing the lower ocellus; a ridge is produced between the antennae; 



body black, with outer half of palpi, the tips of knees, tibiae and 



tarsi white; remainder of logs black; apical joints of tarsi and claws 



blackish; anterior tibial spurs sharp; claws with an inner tooth. 



