TENTHRIDIXID^. AMASIS. HYLOTOMA. 15 



Ci. obscura. Fabricius. — Am. obscura. Steph. Catal. 325. No. 3754. 

 Entirely black, with the wings whitish, the costa of the anterior dusky ; body 



glabrous. 



Said to have been found in Lincolnshire : the only specimens I 

 have seen are in the collection at the British Museum. 



f Sp. 2. Jurinae. Nigra, abdominis dor so subcroceo, segmento prima toto segmen- 

 tisque aliis basi nigris, pedibus Jlavis, femoribus basi tibiis posticis apice tar- 

 sisque omnibus apice nigris. (Long. corp. Sg lin. ; Exp. Alar. 8 lin.) 



Te. Jurins. St. Fargeau Mon. 38. No. 103.— Am. laeta. Steph. Catal. 325- 

 No. 3755. 



Black ; abdomen with the basal joint anteriorly black, the 2nd black, with 

 the sides broadly saffron-coloured, the remaining segments of this last 

 colour, with the base of each on the back black; legs yellow, with the 

 femora at the base, the apex of the hinder tibiae and of each joint of the tarsi 

 black ; wings pellucid. 

 The only examples I have seen of this pretty species are in the 



British Museum : they were taken near Bristol. 



§ 2. Antennae 3-jointed, filiform or subclavate ; ciliated or furcate in the males : 

 anterior wings with 1 marginal and 4 submarginal areolets : body short and 

 stout. 



Ge^us VII.— HYLOTOMA, Fabricius. 



Antenna 3-jointed, 2 basal joints small, 3rd very long, filiform, and ciliated 

 on one side in the males, shorter and somewhat clavate in the females, and 

 nearly glabrous : labrum transverse : mandibles bidentate : head transverse, 

 with a tubercle between the antennae : wings ample, anterior with one 

 marginal areolet, emitting a nerve from the apex ; [and 4 submarginal 

 areolets, the 2nd receiving 1 recurrent nervure, the 3rd 2, and the 4th 

 extending to the margin : body rather short and stout : legs simple in both 

 sexes, 4 posterior tibiae with a spine on the inner side below the middle, and 

 two at the apex. Larva with 1 4 prolegs. 



The singular 3-articulate simple antennas of these insects suffi- 

 ciently distinguish them from all the others of this family, excepting 

 the females of Schizocerus, but from which they may be instantly 

 known by the nervure, which is emitted at the apex of the marginal 

 areolet of the anterior wings, as well as the spine on the inner margin 

 of the 4 posterior tibias : it is, perhaps, matter of doubt whether 

 the antennffi really consist of only 3 articulations, as it is probable 

 that if investigated with a very high power, the apparent elongated 

 3rd joint is composed of several closely united ones. 



A. AntenncE short, nearly filiform in the females, and pilose :— Ptilia, 



St. Farseau. 



