144 The Philippine Journal of Science 



triangular projection below) on clypeus, small transverse mark 

 at each side of clypeus, semilunar lateral marks with a finger- 

 like projection below; labrum pallid, except lower margin; 

 mandibles black, with a reddish band; lower part of clypeus 

 black; front and cheeks polished and impunctate; flagellum 

 mainly pale testaceous beneath, but last two joints dark; 

 mesothorax green, smooth, and polished, feebly punctate ante- 

 riorly; rest of thorax black, except for cream-colored marks as 

 follows: Large part of prothorax (including tubercles), broad 

 vertical band (with triangular projection posteriorly) behind 

 tubercles, oblique band behind posterior margin of mesopleura, 

 large mark on scutellum shaped like a bird in flight (but upside 

 down) ; area of metathorax plicate at base ; tegulae rufous ; second 

 submarginal cell a nearly equilateral triangle ; legs hairy, mainly 

 piceous, but all the femora and anterior and middle tibise pale 

 testaceous beneath ; abdomen bright blue, with the bases of the 

 first three segments broadly testaceous; apical segments with 

 black hair. 



Luzon, Nueva Vizcaya, Imugan (Baker 8062). An entirely 

 unique species, at once known by its remarkable colors and 

 markings. In the previously known Philippine fauna it is 

 closest to C. benguetensis, which has a very perceptible green 

 tint on the front, vertex, and mesothorax. Ceratina bengueten- 

 sis also has a bicolored flagellum, and the abdomen is somewhat 

 clavate. The two species form a new subgenus Chloroceratina 

 (type cyanura) , distinguished from Ceratinidia by the coloration 

 and the shape of the abdomen. 



