238 THE CANADIAN ENTOMOLOGIST. 



(5.) Halidus Kiinzei, n. sp. — $. Length hardly 5 mm.; head and 

 thorax shining oUve green, abdomen ferruginous, the apical two-fifths 

 blackish. Head rather large, considerably broader than thorax, finely 

 and rather closely punctured, facial quadrangle nearly as broad as long ; 

 face with only a few scattered hairs on its lower ])art ; flagellum ferrugi- 

 nous beneath, except at base ; clypeus with its apex darkened, its disc 

 smooth, with only a few scattered punctures ; mandibles ferruginous 

 except at base ; thorax almost entirely nude. Short white hairs on hind 

 part of metathorax and lower part of pleura ; mesothorax and scutellum 

 very shiny, punctured at the sides, the punctures becoming scattered 

 centrad, leaving the disc smooth, nearly impunctate ; basal enclosure of 

 metathorax semilunar, with fairly strong rugse ; pleura well punctured ; 

 tegulre testaceous ; wings hyaline, faintly yellowish, subcostal nervure 

 black, other nervures and stigma honey-colour ; third submarginal cell 

 bulging outwardly, narrowed much less than one-half to marginal ; legs 

 piceous, with thin white pubescence, knees and tarsi somewhat paler and 

 more ferruginous ; spurs pallid, hind spur of hind tibiae with large teeth ; 

 abdomen of the usual form, shining, impunctate, naked, with a very little 

 pubescence at the end ; ventral surface ferruginous, with very little hair. 

 The cheeks are broad, but not produced below. One ?. Known from 

 the few species of similar coloration by the smooth, not granular, meso- 

 thorax, etc. It is perhaps nearest to H. impurus, Cr., but differs by the 

 scanty pubescence of face, colour of nervures, etc. 



(6.) Ceratina arizonensis, n. sp. — $. Length about 33^ mm., 

 shining black ; face narrow, entirely ivory white up to level of antennae, 

 except the supraclypeal area, which is black ; lateral sutures of clypeus 

 marked by a black line ; anterior edge of clypeus with a dark spot on 

 each side \ labrum ivory-colour, with a dark spot on each side ; mandibles 

 black, ferruginous towards ends, but dark at tip ; vertex smooth and 

 impunctate, occiput with strong, large punctures ; cheeks smooth and 

 impunctate, except quite posteriorly ; flagellum brown ; mesothorax 

 punctured in front and along hind margin, centrally impunctate ; scutellum 

 punctured ; base of metathorax minutely striate-granular, more or less 

 tessellate ; tarsi pale ferruginous, anterior tarsi more or less white 

 in front ; anterior tibia? white in front, brownish-ferruginous behind ; 

 anterior femora black, apex and a stripe beneath for the apical two-thirds, 

 white ; four hind knees white, the white continued as a stripe on the 

 tibise; tubercles white; wings rather dull hyaline, strongly iridescent, 



