the genus Odynerus occurring in the Ethiopian Region. 489 



Species (subgenus Hoplomerus) unknown to the author. 



108. quartinae, Crib. | 110. rectus, D. T. 



109. senegalensis, Sauss. | 111. ferruginosus, Sauss. 



Species {Odynerus, sens, lat.) unknown to the author. 



112. humbei, Rad. 



113. obscurus, Rad. 



114. rajfrayi, Rad. 



115. emeryanus, Grib. 



116. magrettii, Grib. 



117. frendens, Grib. 



118. dauensis, Magretti. 



Odynerus, Latr. 

 Key to the Subgenera dealt with in this Paper. 



1. (2) First abdominal segment with at least one distinct trans- 



verse carina, sometimes with 2 carinae (div. Epanci- 

 strocerus); last joint of antennae ((J) bent back to 

 form a hook Ancistrocerus, Wesm. 



2. (1) First abdominal segment without any carina; antennae 



((J) as in Ancistrocerus or with the terminal joints rolled 

 up in spiral fashion. 



3. (4) Antennae (^) as in subgenus Ancistrocerus. 



Licm,otus, Sauss. 



4. (3) Antennae {^) witli the terminal joints rolled up in spiral 



fashion, species (in Ethiopian fauna) large. 



Hoplomerus, Westwood (= Hoplopus, Sauss.). 



Subgenus Ancistrocerus. 



1. (4) Tergite 1 with 2 transverse carinae. . div. Epancislrocerus. 



2. (3) Mesonotum and scutellum uniformly coarsely punctured ; 



clypeus (?) ferruginous massaicus, Cam. 



3. (2) Posterior half of mesonotum and scutellum shining, almost 



impunctate; clypeus ($) yellow, black centrally. 



hudongo, sp. n. 



4. (1) Tergite 1 with 1 transverse carina. 



s. g. Ancistrocerus, sens. str. 



5. (6) Head and thorax black, abdomen wholly ochraceous yellow, 



length 11^ mm gowdeyanus, M. -Waldo. 



6. (5) Head and thorax black, sometimes with yellow or ferruginous 



markings ; abdomen black, with at least two yellow 

 fasciae. 



7. (12) Tergite 1 somewhat elongate, subpetiolate, resembling 



Norlonia species. 



