ALLANTUS TENULUS. 153 



Bircli Wood, and I have received it from Hastings, 

 where it was taken by the Rev. A. N. Bloomfield. 



It appears to be rare on the Continent, and has been 

 recorded from Germany, Switzerland, France and 

 Russia. 



9. ALLANTUS TENULUS. 



Tenthredo tenula, Scop., I. C., 725 ; Vill., I. P., 68. 



Rossii, Pz., F. G., xci, fig. 15 ; Lep., Mon., 92, 264. 



zonata, Fall., Acta, 1808, 51, 5. 



2-fasciata, Klug, Berl. Mag., viii, 141, 112; Htg., 



Blattw., 289, 11 ; Evers., Bull. Mosc., 

 xx, 39, 10. 



Allantus tenuliis, Ste., 111., vii, 60, 8 ; Cam., E. M. M., xvi, 221 ; 

 Andre, Species, i, 372 ; Cat., 47,* 2. 



2'fasciatus, Endow, S. E. Z., xxx, 94, 8 ; Thorns., Opus., 

 298, 8; Hym., Scand., i, 261, 8. 



Black, almost shining, densely covered with a short grey pile ; head 

 and thorax finely punctured, pleurae roughly so ; a line on the pronotum, 

 a band on the upper surface and sides of the third and fourth abdo- 

 minal segments, and tibiae and tarsi yellow ; apices of all the tibiae and 

 of the apical tarsal joints fuscous ; a yellow band is over the apical half 

 of the anterior femora. Wings with a yellowish tinge, clouded at apex 

 from the stigma ; costa and stigma yellowish-testaceous. 



The <? is similar, except that the tarsi are entirely black. 



Length 5 5 lines. 



Tenulus is readily known from all the other British 

 species of the genus by the totally black antennae and 

 mouth, less clavate antennas, legs black at the base, 

 &c. The head behind the eyes, too, projects more, 

 and the pubescence on the head and thorax is darker. 

 Allantus Koehleri, KL, is a close continental ally, but it 

 has four of the abdominal segments yellow, and there 

 are two small yellow spots on the post-scutellum. In 

 tenulus the size of the yellow abdominal bands varies. 



The larva is stated by Rudow to have the body 

 " toto pruinoso, pilifero," brownish-green on the upper 

 part, clear green on the lower. On the back are two 

 brownish dorsal stripes ; each segment bears two 

 diverging brownish strips on the sides, as well as eight 

 points in two rows. The head and anus are brown, the 

 former covered with short bristles; eyes black. He 



