10 THE ENTOMOLOGIST. 



the first recurrent nervure joins the second submarginal cell 

 beyond the middle ; otherwise the insects seem not to differ from 

 the mainland form. Finding no females, I wondered whether 

 N. maturans could be the true female, although it is very unlike 

 punctulata female as known from elsewhere. Close comparison 

 led me to abandon this idea, for maturans differs from male 

 jmnctulata in the duller surface of the mesothorax, the non- 

 bilobed scutellum, and the dull metathorax, with the area merely 

 granular. A'', yunctulata is a Chinese and Japanese species, while 

 N. jjiaturans is related to a species of the Philippine Islands. 



The Formosan N. punctulata all come from Takao, August to 

 October. The abdominal bands are light emerald green, the 

 first two suffused with orange, the last two with purple. 



Nomia maturans, n. sp. 



? . Length about 10-11^ mm. ; black, the head and thorax 

 strongly punctured, with rather abundant pubescence, white on 

 cheeks, pleura and metathorax creamy-white on face and prothorax, 

 black on mesothorax and scutellum, but white tomentum along hind 

 border of mesothorax, and a little at the sides, postscutellum covered 

 with white hair, slightly creamy above ; head broad ; eyes dark 

 brown ; mandibles strongly bidentate ; clypeus and supraclypeal area 

 with a dehcate but distinct median carina, not reaching the lower 

 margin of clypeus ; sides of lower half of clypeus carinate ; antennas 

 black, with the fourth joint red beneath, and the apical part of the 

 flagellum reddish beneath ; front shining, strongly and closely punc- 

 tured ; a flattened, slightly concave smooth area at side of each 

 lateral ocellus ; mesothorax dull, with very large strong punctures, 

 sparse in the middle posteriorly ; scutellum with strong widely 

 separated punctures ; postscutellum with two large triangular teeth ; 

 metathorax dull and granular, the area with a more coarsely granular 

 band, the lateral areas strongly punctured ; tegulas black with creamy- 

 white margins ; wings dusky, stigma dark ferruginous, nervures 

 brown ; second s. m. rather broad, receiving first r. n. much beyond 

 middle ; legs black, with mainly white hair, ferruginous on inner side 

 of tarsi ; abdomen sparsely punctured, segments two to four with 

 broad tegumentary orange bands, sometimes flushed with emerald 

 green. 



Hah. Takao, Formosa, three collected November 10th, 1907. 

 Evidently closely allied to N. quadrifasciata (Ashm.) from the 

 Philippine Islands ; the first distinctly Philippine type I have 

 noted among the Formosan bees. Some years ago I hastily 

 examined Ashmead's type of N. quadrifasciata, but only noted 

 that the abdominal bands were green tinged with orange- 

 vermilion. Ashmead's description of N. quadrifasciata is rather 

 incomplete, and his account of the legs of the female is evidently 

 based on a male. In the colour of the abdominal bands, N. ma- 

 turans also recalls N. opulenta. Smith, In Bingham's work on 

 the ' Hymenoptera of India' it runs in the table to A^". elliotii. 



