HYMENOPTERA. 69 



terior tibiae and tarsi ; wings subhyaline, the tegulae and ner- 

 vures testaceous, iridescent. The two basal segments of the ab- 

 domen highly polislied, impunctate ; the following segments de- 

 licately punctured and thinly covered with hoary pubescence. 

 Hab. St. John's Bluff, East Florida. (Coll. E. Doubleday, Esq.) 



102. Halictus farinosus, n. s. B.M. 



Female. Length 5 Hues. — Black, very closely and finely punc- 

 tured ; the vertex rather broad behind the eyes, the stemmata 

 placed forwards in a line with the eyes, the head covered with a 

 short hoary pubescence ; the thorax is similarly clothed, most 

 sparingly on the disk ; a carina which encloses the space below 

 the post-scutellum is interrupted in the middle ; the tegulae tes- 

 taceous, the wings subhyaline, the nervures ferruginous ; the legs 

 have a pale fulvous pubescence above, the tarsi ferruginous ; the 

 floccus very pale fulvous. Abdomen ovate, thinly covered with 

 hoary pubescence, the apical margins depressed, each having a 

 broad white fascia; the anal rima fulvous. The entire insect 

 has a powdery or dusty appearance. 

 Hab. Cahfornia. 



103. Halictus ligatus. B.M. 

 Halictus ligatus. Say, Bost. Journ. Nat. Hist. i. 396. 5. 



Hab. United States. 



104. Halictus crassicornis. B.M. 



Halictus crassicornis, Kirby, Faun. Boreal. Amer. 267. 2. 

 Hab. North America. 



105. Halictus similis, n. s. B.M. 



Female. Length 3-3^ lines. — Black, head closely and finely 

 jninctured, the clypeus shining, coarsely punctured, very slightly 

 produced. Thorax closely and finely punctured, the enclosed 

 space on the metathorax longitudinally sculptm-ed with radiating 

 striae, the sides have a little pale fulvous pubescence ; the legs 

 clothed with pale fulvous pubescence, the apical joints of the 

 tarsi ferruginous ; the wings hyaline, iridescent, the nervures pale 

 testaceous. Abdomen very smooth and shining at the base, the 

 margins of the segments narrowly testaceous ; a patch of white 

 pubescence at the basal margins of the second and third seg- 

 ments. 



Obs. This species closely resembles H. leucozonius, but differs 

 in the clypeus being less produced, in the colour of the neuration 



