250 E. T. CRESSON. 



Splieoodos mandibnlaris, n. sp. 



9.— Black, shining, closely and finely punctured, thinly clothed with 

 glittering whitish hairs, more dense on face, cheeks, scutellum and sides of 

 thorax, and long on scutellum; mandibles ferruginous, tips black; antennse 

 short, stout, apex of flagellum pale testaceous beneath ; mesothorax sparsely 

 punctured ; basal space of metathorax slightly excavated, coarsely rugose, the 

 posterior edge subcarinate; basal sides of metathorax with a patch of white 

 downy pubescence; tegulse pale testaceous, darker at base; wings hyaline, 

 subiridescent, nervures and stigma blackish; tibiae and tarsi with rather dense 

 glittering pubescence, tarsi pale; abdomen oblong-ovate, smooth and polished, 

 bright rufo-ferruginous, base, sides and apex with a thin pale glittering pube- 

 scence, apex slightly dusky. Length .22 inch. 

 Two specimens. (Belfrage.) 



Halictus occidentalis, n. sp. 



o. — Black, opaque, finely punctured; head not wider than thorax; face 

 with rather dense pale ochraceous pubescence; clypeus shining, sparsely punc- 

 tured, apex fringed with long golden hairs ; mandibles reddish medially ; cheeks 

 with appressed whitish pubescence, fringed beneath with long yellowish 

 hairs; vertex and occiput with short erect pale ochraceous pubescence; an- 

 tennas brownish beneath, pale at apex; mesothorax and scutellum with a 

 finely impressed central longitudinal line, clothed with a very short pale 

 pubescence: upper lateral margin of prothorax, patch before tegulae, narrow 

 lateral and posterior margins of metathorax, postscutellum, sides of metatho- 

 rax and pleura clothed with dense ochraceous pubescence; base of metathorax 

 finely subgranulated; tegulae pale testaceous; wings yellowish, apical margin 

 fuliginous; legs fulvous, with golden pubescence, coxae, trochanters and base 

 of femora more or less blackish ; abdomen broader than thorax, oblong-ovate, 

 very finely and closely punctured, shining towards apex, first segment clothed 

 with erect pale pubescence, apical margins of segments 1 — 4 with an even 

 fascia of dense white pubescence, and rima pale ochraceous. Length .55 inch. 

 %. — Narrower than 9> clypeus except two black spots at base, labrum and 

 middle of mandibles pale yellow; antennas long, pale fulvous beneath; sides 

 of mesothorax and of metathorax and disk of first abdominal segment some- 

 times tinged with ferruginous; apex of wings but slightly dusky; knees, tibiae 

 and tarsi more or less tinged with yellow; abdomen narrower than in J and 

 more strongly punctured, anal segment more or less tinged with ferruginous or 

 fulvous. Length .45 inch. 



Four specimens. (Belfrage ; Boll.) 



Ilalictus annaticeps, n. sp. 



9.— Black, head and thorax rather thickly clothed with griseous pubes- 

 cence ; head slightly broader than thorax, very densely punctured, opaque; 

 clypeus shining, very sparsely punctured, slightly depressed on anterior mid- 

 dle, apex fringed with long golden hairs; mandibles piceous; cheeks beneath 

 with a subacute tubercle or spine on each side; antennae short, flagellum brown 

 beneath, paler at tips; thorax above closely punctured and thinly pubescent, 

 scutellum flat, shining, sparsely punctured, postscutellum, sides of metathorax, 

 sides of thorax in front of tegulae and pleura densely pubescent ; base of meta- 

 thorax finely longitudinally rugose, sometimes almost striated; tegulce rufo- 



