.Mr. 11. K. rdniei" on Foaaorud llijinenoiiU'ra. iV.) 



'2. First abdoiuiual segment not constricted 



nt the apex 3. 



First abdominal segment constricted at 

 tlio apex A, sccernendus, Tuni, 



3. Second ventral segment anjrular at the 



base ; black, tiie second abdominal 



segment red A. ruhrosignatw^, Turn. 



Second ventral segment not angular at 

 tlie base ; otberwise coloured A. rufomixtus, Turn. 



4. Ba.-al area of median segment smooth . . o. 

 Basal area of median .segment coarsely 



striated 6. 



5. Basal half of second dorsal segment 



orange A. ciliatus, Handl. 



Second dorsal segment wholly black. ... A. perlcinsi, Turn. 



6. Second dorsal segment marked with 



orange or yellow 7. 



Second dorsal segment wholly black . . 8. 



7. Three basal dorsal segments broadly 



banded with orange at the apex .... A. farsatus, Sm. 

 Three basal dorsal segments with inter- 

 rupted yellow bands at the apex .... A. obesus, Turn, 



8. Scutellum, post.-cutellum, and bands of 



the abdomen bright orange A. chrysozonus, Turn. 



Scutellum and po>tscutelluni blick ; 

 bauds of the abdomen yellow and 

 narrower A. hellicosus, Sm. 



6 6. 



1. Basal area of the median segment 



smooth A. ciliatus, Hand, 



Basal area of the median segment 

 striated 2. 



2. The two subapical joints of the flagellum 



at least more or less arched beneath, 

 and subtubeiculate or spinose at the 

 apiral angles ; ventral segments 4-6 



witliout long cili;e 3, 



Tlie two subapical Joints of the flagellum 

 not arched or subtuberculate beneath ; 

 Ventral segments 4-G usually with long 

 cilire 6, 



3. .Epical joint of the flagellum with a spine 



at tlie base: abdomen black with yel- 

 low bands, first segment broad 4, 



Apical joint of the antennse without a 

 spine ; abdomen with the two basal 

 segments mostly orange ; first segment 

 narrow A. spintcornis, Turn. 



4. Abdominal fascise continuous, and on the 



five basal segments A. spryi, Turn. 



Abdominal fascise broadly interrupted, 



and on the three basal segments only. . A. obesiis. Turn, 

 T). Scutellum more or less longitudinally 



striated 6. 



Scutellum almost smooth tt, 



