ARABIAN HYMENOPfERA. 3^ 



luteous along tlie hind border ; a large luteous spot on each side of 

 the metathorax. Abdomen with a luteous band near the base, this 

 band slightly excavated on its fore side ; hind borders of the second 

 and third segments pale yellow. Legs yellow ; hind femora piceous 

 above. Wings slightly cinereous ; veins black, tawny at the base. 

 Length of the body 4 lines. 



Wady Genneh. 



175. Odynerus dotatus. Male. — Black, thickly punctured. 

 Head with three yellowish white angular spots, one above the antennae 

 and one in the notch of each eye ; face yellowish white. First and 

 second joints of the anteunfe luteous ; first yellow beneath. Fore 

 part of the thorax with a broad yellow partly luteous band, which is 

 very deeply excavated on the hind side ; scutellum with a luteous band 

 and a luteous hind border ; metathorax with a large luteous patch on 

 each side. First segment of the abdomen luteous, with a black disk 

 in front and with a yellow hind border ; two posterior yellow bands 

 connected on each side ; first band very widely interrupted in the 

 middle; second undulating along its fore side; under side yellow, 

 with a black dot on each side and with three black bands. Legs 

 pale luteous. Wings slightly cinereous ; veins black, testaceous at 

 the base. Fore wings with an irregular blackish streak along the 

 costa. Length of the body 4i lines. 



Wady Genneh. 



176. Odynerus cognatus. Male. — Black, thickly punctured. 

 Head with a luteous line along the hind border of each eye ; a trian- 

 gular spot above the antennae, a streak in the notch of each eye and 

 face yellowish white. First and second joints of the antennae luteous, 

 Prothorax with a luteous band on the fore border, a spot on each side 

 near the tegula, an interrupted band on the scutellum and a patch 

 on each side of the metathorax luteous. Abdomen with the first 

 segment luteous, excepting its black, fore disk; hind borders of the 

 following segments yellow. Legs yellow; femora above and coxte 

 black. Wings cinereous ; veins black. Fore wings with a blackish 

 streak along the costa. Length of tlie body 4 lines. 



Wady Ferran. 



177. Odynerus exustus. Female. — Black, thickly punctured, 

 with red markings ; a transverse streak behind each eye, an angular 

 spot behind the antenute, one in the notch of each eye, face, a band 

 on the fore part of the thorax with a deeply excavated hind border, a 

 dot near each tegula, a band on the scutellum, a large spot on each 

 side of the metathorax and two abdominal bands with excavated fore 



