Ielincumouidous Group Tryphonides bchizodonti. 42-"> 



(7). 6. Anterior segments transversely 



impressed ; tibia) white . . Bassus. 

 (6). 7. Anterior segments not impressed 



or tibia? not white .... Homoporus. 

 (3). 8. Face shining and subglabrous, 



bicarinate longitudinally. 

 (10). 9. Areolet wanting ; abdomen not 



entirely black Peomethus. 



(9). 10. Areolet present ; abdomen black 



and spatulately compressed . Phthorimus. 



Trichomastix, Voll. 



A large black, shining species, 

 with legs red ; scutellum 

 laterally white 1. JlitvijU's, Holmgr. 



Zootrephus, Thorns. 

 (2). 1. Flagellum 18-jointed ; anus 



broadly black ; metathorax 



more rugose 1. rujkcntris, Grav. 



(1). 2. Flagellum 22-jointed ; anus 



narrowly black ; metathorax 



less rugose 2. holmgreni, Bridg. 



Bassus. Fab. 



(6). 1. Anterior coxae not entirely pale ; 

 abdomen rarely red-marked. 



(3). 2. Hind coxa? red ; basal segment 



apically pure white .... 1. albosicjuatus, Grav. 



(2). 3. All the coxae black ; basal seg- 

 ment not white-marked. 



(5). 4. Apex of hind tibiae black ; 2 



epistoma white-marked . . 2. varicoxa, Thorns. 



(4). 5. Apex of hind tibiae ferrugin- 



eons; 2 epistoma immaculate 3. annulatus, Grav. 



(1). 6. Anterior coxae entirely pale ; 

 abdomen usually centrally red. 

 (10). 7. All the coxae pale. 



(9). 8. Abdomen not broadly red cen- 

 trally ; hind tibiae bicolored . 4. tricinctus, Grav. 



(8). 9. Abdomen broadly red centrally; 



hind tibiae tricolored . . .5. leetatorius, Fab. 



(7). 10. Hind coxae basally black ; cen- 

 tral segments red-banded . . 6. multicolor, Grav. 



