• 



142 THE ENTOMOLOGIST. 



One specimen has a Turn erella -like venation, with only one 

 submarginal cell and two discoidals. The shape of the 

 remaining submarginal is as in E. perpusilla, not at all as in 

 Turnerella. 



Boinhus bicoloratus. — In my note on this species, p. 101, I 

 used the customary sign for workers, but for some reason the 

 printer desired to spell it out, and rendered it "hermaphrodites." 



NEW SPECIES OF SYNTOMID^ FROM BRITISH 

 GUIANA AND SOUTH BRAZIL. 



By W. J. Kaye, F.E.S. 



Pterygopterus flavicornis, n. sp. 



$ . Blue-black ; antennaB orange, blackish close to base. Abdo- 

 men with metallic-blue patches at base, and an ill-defined lateral 

 stripe of metallic spots. Fore wing with the outer marginal half dull 

 blackish, the remainder of wing deep green. The median vein and 

 upper discocellular bright blue-green. Hind wing dark shot blue- 

 green. Under side of both fore and hind wings suffused with brilliant 

 metallic-green, the veins at the margin of wings only so coloured, the 

 interspaces black. Differs only from P. clavipennis (male) in the 

 antennae, which are wholly orange in the insect now described, while 

 clavipennis has only the tips orange. Expanse, 56 mm. 



The shape of the hind wing is totally different, but is pro- 

 bably a sexual difference. The female of P. clavipennis is 

 unknown. 



Hah. Potaro River, British Guiana, June 18th, 1904 (C. B. 

 Roberts). 



Pseudosphex polyhia, n. sp. 



Head black. Thorax black. Eyes finely white-ringed. Antennae 

 blue-black for basal two-thirds, the slender apical third dead black. 

 Abdomen black, with an oblique whitish streak on attenuated basal 

 segment at side. Fore wing yellowish hyaline, with the costa broadly 

 suffused with brownish. Hind wing more yellow^ish hyaline. Legs 

 yellow, with the inside of femur velvety black. Expanse, 26 mm. 



Hab. Castro, Parana, Brazil, April 14th, 1910 (W. J. Kaye). 



Pseudosphex joncsi. 



Head black ; eyes narrowly ringed with white. Antennae purplish 

 for basal two-thirds, brownish for the attenuated apical third. Abdo- 

 men shining brown above, ringed with yellow beneath. Wings 

 hyaline with a tinge of yellowish. Legs yellowish, the femora darker. 

 Expanse, 20 mm. 



Hab. Alto da Serra, Santos, Brazil, March 6th, 1910 (E.D. 

 Jones). 



