OEPHUS FEMORATUS. 115 



Abdomen compressed strongly at the sides ; at the 

 apex the upper part projects. 



Cephus contains three more or less well-marked 

 groups, but they do not offer sufficiently well-defined 

 points of distinction to warrant their being raised to 

 generic rank. 



Sub-genus JANUS. 



Antennce slender, filiform, not thickened towards the 

 apex, twenty-three to twenty -four-jointed, the third 

 joint longer than fourth. Eyes oval, not reaching 

 to the base of mandibles. Abdomen not more than 

 one half longer than the thorax. The fourth joint 

 of maxillary palpus double the length of sixth. 

 The basal joint not half the length of second. 



1. CEPHUS FEMORATUS. 



Vol. II, PI. VII, fig. 1, ? ; la, Mandible ; 1 b, Labium ; 

 1 c, Maxillary Palpus. Vol. Ill, PL III, fig. 3, <? . 

 Vol. Ill, PL IV, fig. 9, Cocoon in willow twig. 



Cephus femoratus, Curtis, B. E., vii, pi. ccci. 

 Janus connectus, Ste., 111., vii, 108, pi. xxxvi, fig. 1. 

 Phyllcecus faunus, Newm., Ent. Mag., v. 485. 

 Cephus cynosbati, Andre, Species, i, 531, pi. xxiii, fig. 2, Cat. 

 67,* 3. 



Black, shining ; mandibles testaceous ; four anterior tibiae and tarsi 

 testaceous, the tarsi somewhat more obscurely coloured ; a line on the 

 pronotum, base of femora and basal third of posterior tibiae, white. 

 Wings hyaline, nervures black. 



The (^ has the apical third of the anterior femora and the whole of 

 the four posterior reddish, the tibiae pale testaceous, and the base of 

 posterior tibiae white ; the anus is testaceous ; the anterior tarsi are 

 slightly fuscous. 



Length 5 7 lines. 



An easily recognised species. The white band on 

 the pronotum is sometimes absent. 



The larva has been described by Giraud. It is of 

 the usual form, and is found in the lower branches of 



