58 THE ENTOMOLOGIST. 



punctures. Apical part minutely transversely lineolate, with 

 very few punctures. 



Halictus warhurtoni, n. sp. 

 3 . Length about 10 mm. ; black, the pubescence dull white, with 

 some black or dark fuscous on vertex aud dorsum of abdomen ; inner 

 orbital margins sballowly subemarginate, converging below ; clypeus 

 with rather more than the anterior half light lemon-yellow, the yellow 

 also sending a broad process upwards in the median line ; antennae 

 long, black, the middle flagellar joints bulging beneath ; area of meta- 

 thorax short, shining, with irregular plicae, bounded by a distinct 

 rim ; sides of metathorax covered with white tomentum ; legs black, 

 including tarsi ; hair on inner side of tarsi slightly yellow ; tegulte 

 large, punctate, dark rufous ; stigma large, rather dark reddish, ner- 

 vures fuscous ; b. n. falling just short of t. m., with no interval between 

 them ; second s. m. approximately square ; first r. n. meeting second 

 t. c. ; abdomen rather broad, convex, the hind margins of the seg- 

 ments very dark reddish. The scutellum is bigibbous, with a median 

 depression. 



Hah. Hobart, Tasmania (J. J. Walker, 3215). Not unlike 

 H. lanuginosus , Sm., but, while the pubescence is of the same 

 general type, it is much less abundant ; the head, seen from in 

 front, is broader and more triangular (in lanuginosus it is nearly 

 round) ; the stigma is much larger ; the area of metathorax is 

 quite different, &c. 



Halictus mitchelli, n. sp. 



? . Length not quite 9 mm. ; black, so similar to H. warhurtoni 

 that at first I thought it might be its mate ; but the microscopical 

 characters dispose of this possibility, and the wings are also quite 

 different, the stigma being smaller and yellower (a sort of dull amber), 

 the nervures are lighter, and the first r. n. enters the second s. m. 

 about the beginning of its last fourth. The scutellum is flattened, not 

 bigibbose, and the area of metathorax has an irregular subreticulate 

 pattern of raised lines. 



Hah. Hobart, Tasmania (J. J. Walker, 3220). Easily known 

 from H. reprcesentans, Sm., by the sculpture of metathorax, 

 light stigma, &c. 



Halictus hwkei, n. sp. 



$ . Length about 5 mm. ; black, with the abdomen rufo-piceous ; 

 the head is dullish, but the mesothorax is very shiny, and when held 

 near the window for examiuation reflects the blue sky so that one 

 could easily be deceived into thinking it tinted ; fiagellum dull reddish 

 beneath ; area of metathorax dull, covered with very fine strife ; legs 

 rufo-piceous or almost black, the knees redder ; tegulae pale testaceous, 

 with a dark mark in front ; wings iridescent ; stigma very large, dull 

 reddish brown ; nervures light brown, the second r. n. and third t. c. 

 barely discernible ; b. n. falling some distance short of t. m. ; second 

 s. m. about twice as broad below as above, receiving the first r. n. at 

 about the beginning of its last fourth ; abdomen shiuing above, 

 beneath with much white hair, in which pollen is collected. 



Hah. Hobart, Tasmania (J. J. Walker, 3251). 



