CHRYSOTOXUM. 265 



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

 minates in a pale brown spot. Abdomen loilh four interrupted lands 

 and the tip yelloio or luteous ; land borders of ike third and fourth secj- 

 ments taiony. Legs luteous; tibia; occasionally yellow. Male. Epi- 

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

 side of the vertex. 



Generally distributed, (E. S.) 



3. arcuatum, L. fu. 1806 {11 ^A).— fascial urn, Mir. ? — m/c-r- 

 sectum, Gf. — vespiforme, Eb. — alternatum, Shr. ? — fasciolatum, Mg. 

 (fern.) ; Mq. ; Ztt. ; Rdu. ; Lw. ; Ct. — hortense, ]Mg. (mas.) Ni- 

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

 alls subcinereis ad costam fulvis, abdomiue fasciis quatuor arcuatis qua- 

 luorque rectis flams, 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 bro\Yii 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-tliirds of the fore 

 border from the base. Haltercs 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 coxce black ; tibiae occasionally yellow. 



Generally distributed, (E. I.) 



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

 vittis duabus interruptis scutellique margine fiavis, abdomine fasciis 

 quatuor talis 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 

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

 liiteous. Abdomen with four broad interrupted arched bands which widen 

 en each side and are then connected with four entire bands which are convex 

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

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



Rare. In Mr. Stephens's collection, (E.) 



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

 cuatum var. ^, Elu. Abdomine nigro, fasciis quatuor arcuatis inter- 

 ruptis anoque flavis. 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 l^lack disc. Wings coloui'lcss, 



VOL. I. 2 m 



