22 NEUROPTERA. 



sisdng of about twenty-seven joints, the two basal joints 

 more robust ; thorax flat ; in the place of the anterior wings 

 two small leather-like scales, without veins, fringed on the 

 margin ; legs not thickened ; tarsi tri-articulate. 



Von Hey den describes this genus under the name of Lepi- 

 noius. 



2. C. STUDiosA, Westw. Trans. Ent. Soc. iv. 71 ; Mag. 



N. H. 480. 

 Whitish yellow ; eyes brownish ; antennae brown ; 



labrum whitish ; notch of the abdomen brown ; legs 



whitish. 

 Length 1 lin. 

 JECab. In houses in old books and neglected cases of 



insects. In dead specimens the scales easily fall off. 



II. Ocelli present. 



A. Wings rudimentary. 



Genus Lachesis, Westwood. 



Eyes very prominent; three small ocelli on the crown; 



antennae thirteen-jointed, the two basal joints more robust j 



the male with four wings, shorter than the abdomen; female 



without wings ; tarsi bi-articulate. 



3. L. FATiDicA, Westw. Introd. ii. 18, fig. 59, 16; Steph. 



III. 129, 2. 

 Yellowish ; eyes brown ; antennae and mouth pale. 

 Length | — 1 lin. 



Mab. In old papers and neglected cases of insects. 

 Obs, I am not accurately acquainted with this genus and 

 species; several specimens in my collection, which agree with 

 Westwood's description, lead me to suppose that they are 



