SYKPHIDAE. 



195 



(frons) and sides of the face are pale instead of dark. The second and third 

 abdominal tergites especially have a purplish lustre mingled with the blue ; 

 this likewise shows faintly on the dorsum of the thorax. The scanty blackish- 

 brown dust on the thorax is disposed in such a way that anteriorly three very 

 narrow shining stripes may be seen in some lights. So strong is the metallic 

 coloration, however, that these are not visible in every specimen. 



Vertical triangle very acute, wedge shaped, about four times as long as 



Text-fig. 2. — Baccha praefica Bezzi. $. 



wide, with a longitudinal crease or impression anteriorly, and the short black 

 bristles set in a row arranged antero-posteriorly. Front with long, stiff, shining 

 black, bristly hairs. Upper anterior eye facets barely perceptibly enlarged. 

 Second joint of antenna showing same inner protuberance as in Hypopygium 

 small and shining black, not visible from above, 



Upolu : Malololelei, 9 20.iii.-14-30.vi., 7.vii.l924 (Armstrong, Buxton 

 and Hopkins). Savaii : Safune and Salailua, 1 cJ, 3 21, 22.V.1924. Tutuila : 

 Pago Pago, 4 c^(^ (cotypes), 1 16-18.iv.l924 (Bryan), 14.xii.l925. 



