CHRYSOTOXUM. 265 



the fore border for three-fourths of the length from the base, and ter- 

 minates in a pale brown spot. Abdomen with four interrupted bands 

 and the tip yellow or luteous ; hind borders of the third and fourth seg- 

 ments tawny. Legs luteous ; tibia? occasionally yellow. Male. Epi- 

 stoma luteous. Fern. Epistoma bright yellow ; a yellow spot on each 

 side of the vertex. 



Generally distributed. (E. S.) 



3. arcuatum, L. fn. 1806 (1761). -fasciatum, Mir. ?inter- 

 sectum, Gf. vespiforme, Fb. alternatum, Shr. ?faseiolatum, Mg. 

 (fern.) ; Mq. ; Ztt. ; Rdn. ; Lw. ; Ct. hortense, Mg. (mas.) Ni- 

 grum, capite plerumque flavo, thorace vittis duabus scutelloque flavis, 

 alis subcinereis ad costam fulvis, abdomine fasciis quatuor arcuatis qua- 

 tnorque rectis flavis, pedibus luteis, femoribus basi nigris. Long. 5^-6 ; 

 alar. 11-12 lin. 



Black. Head white behind; epistoma luteous, or bright yellow 

 with a luteous fore border ; a short brown stripe on each side of the 

 middle black stripe. Antennae luteous towards the tips. Thorax with 

 two outer interrupted yellow stripes ; fore part with two inner hoary 

 stripes ; scutellum yellow, with a brown disc. Wings slightly grey, 

 with a diffused tawny stripe which extends along two-thirds of the fore 

 border from the base. Halteres luteous. Abdomen with four very 

 slightly arched interrupted yellow or luteous bands, which join the yellow 

 hind borders of the segments on each side ; first of the latter bands nar- 

 row and interrupted ; fourth occupying the whole segment. Legs 

 luteous ; femora at the base and coxa black ; tibiae occasionally yellow. 



Generally distributed. (E. I.) 



4. octomaculatum, Ct. ! b. e. 653. 5 (1838). Nigrum, thoracis 

 vittis duabus interrupts scutellique margine flavis, abdomine fasciis 

 quatuor latis interruptis arcuatis quatuorque integris flavis. Long. 5 ; 

 alar. 10 lin. 



Fern. Black. Vertex with two yellow spots ; epistoma yellow on 

 each side. Thorax with two short hoary stripes on the fore part, and 

 with a yellow interrupted stripe on each side ; scutellum yellow, with a 

 black disc. Wings pale grey, tawny along the fore border. Halteres 

 luteous. Abdomen with four broad interrupted arched bands which widen 

 on each side and are then connected with four entire bands whifhare convex 

 on the fore border, of these tJie second, third, and fourth are very broad, and 

 the abdomen is almost wholly yellow towards the tip. Legs luteous. 



Bare. In Mr. Stephens's collection. (E.) 



5. intermedium, Mg. zw. iii. 169. 3 (1822); Mq. ; Ztt. ar- 

 cuatum var. /3, Fin. Abdomine nigro, fasciis quatuor arcuatis inter- 

 ruptis anoquejlavis. Long. 6 ; alar. 12 lin. 



Black. Epistoma yellow on each side. Thorax with two short 

 hoary stripes in the fore part, and with a yellow interrupted stripe on 

 each side; scutellum yellow, with a black disc. Wings colourless, 



VOL. i. 2 M 



