TENTHREDOPSIS FEMORALIS. 105 



apical joints of hinder tarsi more or less black ; antennae black to pitchy. 

 Wings hyaline, costa fuscous, extreme base paler; second recurrent 

 nervure interstitial, or nearly so. 



$ antennae thickish, black above, fuscous beneath ; orbits of eyes, a 

 spot behind, and mouth white. Abdomen black, legs testaceous ; coxae, 

 trochanters, base of middle femora, and hinder pair entirely black; 

 posterior tibiae pitchy ; metatarsus of hinder legs pitchy ; other joints 

 white. 



Length 4f 6i lines. 



Scarcely to be distinguished from cordata except by 

 the form of the saw and the colour of abdomen, and 

 that cannot be a constant test if cordata has, as has 

 been reported by authors, sometimes the abdomen 

 entirely black. It varies like cordata in having the 

 orbits of the eyes and scutellar spots often black. 



The species is not uncommon in the South of 

 England, also in Scotland, according to Stephens, but 

 I have never seen it there myself. 



Continental distribution : France, Switzerland. 



3. TENTHREDOPSIS FEMORALIS. 

 PL XVI, fig. 6, Saw. 



Tenthredo femoralis, Stephens, 111., vii, 80, 23. 

 Tenthredopsis femoralis, Cam., Tr. Ent. Soc., 1881, 566. 



Black ; clypeus, labrum, mandibles, inner and outer orbits of eyes, 

 and scutellar spots yellowish- white; three to five apical segments of 

 abdomen bright red; legs pitchy black, four anterior tibiae and 

 tarsi testaceous, middle joints of hinder tarsi white. Wings hyaline. 

 Antennae black, pitchy beneath. 9 . 



Length 5 lines. 



Easily known from cordata by the black femora ; it 

 is smaller, the abdomen bulges out more at the centre, 

 and the form of the saw is very different. 



Rare ; taken in the London district, and at Dover, 

 in June, according to Stephens. Also at Dumfries in 

 June. 



