G()<5 Mr. T. D. A. Cockerell — I)escrij>ti'ons anl 



vertex hardly sliming; mesothorax and scutellum dull, 

 extremely densely and finely punctured ; thorax above 

 reddish from short hair ; prothorax not angulate at sides iu 

 front ; base of metathorax large, the poorly defined area 

 ^vith distinct oblique ridges ; truncation sharply defined. 

 Legs black, -with reddish liair, that on outer side of hind 

 tibise and tarsi dark fuscous ; hind spur with about five 

 short oblique spines (thus entirely different from that of 

 H. recoanitus); tegulse black. Wings dilute fuliginous, 

 stigma rufo-fuscous, nervures dusky testaceous ; second s.ra. 

 broad, receiving first r. n. a short distance before end, 

 third s.m. of quadrate type. Abdomen shining, but very 

 closely and extremely minutely punctured, including tlie 

 disc of first segment ; basal hair-bands pale ochreous- tinted, 

 entire and with the lower edge straigiit, but often largely 

 concealed through the overlapping of the segments ; hair at 

 apex brownish. 



Hab. Formosa, 5 ? (Sauter). B( rlin Museum. 



Evidently close to H. horishensis, but not its female, on 

 account of the much more finely and densely punctured 

 mesothorax, dark tegulne, &c. 



Halictus perangidafus, sp. n. 



9 . — Length about 10 mm., anterior wing Tf. 

 Black, robust, with broad alxlomen ; pubescence pale 

 ochreous, lighter below ; head ordinary ; clypeus strongly 

 punctured; antennae dark ; front dull and granular, vertex 

 shining ; mesotliorax and scutellum dullish, with very large 

 and strong, not very dense punctures ; pleura very hairy ; 

 prothorax at sides in front ])rodueed into large triangular 

 sharply pointed shelves ; area of metathorax with fine more 

 or less sinuous rug£e ; truncation sharp-edged at sides. Legs 

 black, with pale ochrcous-tinted hair; a brush of bright 

 fox-red hair at end of hind basitarsus ; hair on inner side of 

 basitarsi orange; hind spur with about four short blunt 

 laminse behind, and on inner edge with numerous micro- 

 scopical ai)pressed teeth (the spiir therefore quite different 

 from that of the three species described above, but nearest 

 to multistictiis, which has pointed teetli in place of the 

 broad blunt laminne) ; tegulie piccous with the margin paler. 

 "Wings dusky, stigma and nervures very dull yellowish 

 testaceous ; second s.m. broad, receiving first r. n. a short 

 distance from end: third s.m. narrowed about half above, 

 but not much elongated. Abdomen very fimdy and densely 

 punctured; broad dense pale oehrcous-tinted basal hair- 



