CERATINA. 



93 



on their apical margins, that on the fourth interrupted in the 

 middle ; the sixth segment with a central yellow subovate macula ; 

 the seventh truncate at the apex. 



Hab. Burmah. 



5, Ceratina flavipes. 



Male. Length 3 lines. — Black, smooth, shining, very finely punc- 

 tured; head and abdomen variegated with yellow. The man- 

 dibles, labrum, clypeus, a transverse spot above it, and the face 

 on each side of it, as high as the insertion of the antennae, yellow. 

 The metathorax opaque ; wings hyaline and iridescent, the ner- 

 vures testaceous, the stigma and costal nervure fuscous ; the tibise 

 and tarsi honey-yellow. Abdomen with the apical margins of the 

 second to fifth segments with narrow yellow fascia) ; the first and 

 second fasciae widely interrupted, the third much less so, the fourth 

 entire : the seventh segment subdentate in the middle, and oblique 

 on each side. 



Hah. Hakodate. 



6. Ceratina unimaculata. 



Female. Length 3| lines. — Head and thorax green, the abdomen 

 dark blue ; strongly punctured. The clypeus with a longitudinal 

 yellowish-white macula, narrowest above ; the fiagellum of the an- 

 tennas, except two or three of the basal joints, obscurely fulvous 

 beneath. The metathorax truncate, the margin of the truncation 

 above acute and slightly raised; the wings hyaline, with their 

 apical margins slightly clouded; the legs dark rufo-piceous be- 

 neath ; the anterior tibiae with a pale spot at the base ; all the 

 tibiae and tarsi with glittering pale pubescence. Abdomen with 

 the margins of all the segments constricted; the apical margin of 

 the terminal segment pointed in the middle. 



Male. Bather smaller than the female ; coloured and punctured in 

 the same manner ; the terminal segment of the abdomen with the 

 apical margin rounded and subdentate laterally. 



Hah. Celebes, Macassar. 



7. Ceratina rugifrons. 



Male. Length 3| lines. — Head and thorax strongly punctured ; 

 abdomen closely, but more finely so, and variegated with yellow 

 markings. The face rugose-punctate ; the anterior portion of the 

 clypeus, a line on each side of it, widened anteriorly, a transverse 

 line above it, the labrum, and a short narrow line behind the eyes, 

 yellow ; the scape in front ferruginous, probably sometimes yellow. 

 The margin of the prothorax, the tubercles united with it, a trans- 

 verse line on the scutellum, the tibiae and tarsi, the anterior 



