HYMENOPTERA. 59 



middle. Mesonotum shining, minutely punctured ; in the centre of the basal half is a shallow, 

 narrow furrow. Scutellum punctured on the sides and apex. Post-scutellum thickly covered 

 with long griseous pubescence. The striae on the basal area of the median segment are 

 irregular ; at the base they are stouter and longitudinal ; at the apex finer, closer and trans- 

 verse ; on the sides they are narrow, close together and longitudinal. The hair on the pleurae 

 is longer and thicker than it is on the upper surface. The hair on the legs is long and 

 white ; on the outer side of the tibiae it is shorter and darker, almost black ; on the tarsi it 

 is long and bright fulvous; the claws are pale testaceous. Wings clear hyaline, iridescent; 

 the stigma is testaceous ; the nervures are blackish ; the first recurrent nervure is inter- 

 stitial. Abdomen shining, impunctate ; the segments are edged with white pubescence ; there 

 is a narrow transverse furrow on the second and third segments ; the anal rima is brownish. 



The eyes distinctly converge above ; the head is not very elongate in front ; the lower 

 half of the front bears a distinct keel ; the apex of the median segment has a semi- 

 perpendicular slope, is smooth and shining and deeply furrowed on the lower part ; the 

 tegulae are piceous. 



16. Ceratina viridissima (Dalla Torre) (viridis Guer.). 



Many of the specimens are golden above. 

 Hab. Common in the Maldives. 



17. Ceratina appendicidata, sp. nov. 



Nigra, capite thoraceque supra viridis ; abdoraine late flavo-lineato ; clypeo flavo, nigro 

 bilineato; alis hyalinis, nervis stigmateque testaceis. $. 



Long. 4 mm. 



Hah. Mamaduwari, Mahlos Atoll, Maldives. 



Scape of antennae broadly yellow beneath ; the flagellum brownish. Head dark green, 

 smooth, thickly covered with white pubescence ; the clypeus and an oblique, somewhat conical, 

 spot close to its lower side, yellow ; in the centre of the clypeus are two large marks, 

 longer than broad and rounded above. Mandibles yellow, black at the apex. The meso- 

 notum and scutellum are green ; there is a broad yellow line on the pronotum, extending 

 to the tubercles, which are similarly coloured, as are also the post-scutellum and a curved 

 line at the side of the scutellum. The median segment is black and is, at the base, closely 

 obliquely striated. Wings clear hyaline ; the stigma and nervures are pale testaceous ; the 

 second and first transverse cubital nervures are united at the top. Legs thickly covered 

 with long, white hair ; the knees, tibiae and tarsi are bright yellow ; the middle tibiae are 

 lined behind with black in the middle; the hinder are black, except at the base and apex. 

 Abdomen smooth and shining; there is a short yellow line on the first segment on either 

 side ; on the second and third the yellow lines extend nearly to the middle ; on the fourth 

 they are almost united ; on the fifth and sixth they are continuous. 



Characteristic is the union of the first and second cubital nervures at the top ; the 

 third is straight and oblique to near the bottom, where it curves sharply backwards, thus 

 forming a sharp angle, from the apex of which a short nervure issues; the second recurrent 

 nervure is received at the base of this angle. 



A distinct species. 



8—2 



