88 PSYCHE {August 
I collected specimens of H. viride Cresson. H. polygoni may be known from /7. 
viride by the darker wings, the darker color, the strongly striated facial basin, and the 
presence-of the carina from the postscutellum. 
Chrysis (Tetrachrysis) cerulans nanula n. subsp. 
Female: length 5 mm. Facial carina! distinct; malar space broad; clypeus 
transverse; radial cell almost closed at the apex. Apical teeth short, broadly tri- 
angular, obtuse at the apex, the emargination between the middle ones sub-V-shaped 
and narrower than the emargination between the middle and lateral ones. Lower 
lateral margin of the third segment straight. Apical groove distinct, with eight 
pits, the middle pits somewhat confluent. Blue; tarsi and the flagellum brownish. 
Wings slightly dusky, venation black. Sparsely clothed with a few long hairs. 
Easily separated from cerulans by the short obtuse teeth. 
Type locality: Florissant, Colo., June 24, 1908, (‘T. D. A. Cockerell). 
Chrysis (‘Tetrachrysis) florissanticola n. sp. 
Male: length 7.5 mm. Clypeus transverse; facial carina wanting; facial basin 
punctured above, finely transversely striated below; a faint longitudinal furrow above; 
malar space less than the length of the second antennal joint; facial quadrangle 
narrowest a little below the top of the facial basin; cheeks very narrow at the 
mandibles; eyes rather large oval; the third antennal joint about one third longer 
than the fourth. Pronotum longer than the head, its apical middle dentate, very 
little if any shorter than the mesonotum; parapsidial furrows distinct, parallel; out- 
side of these are two short rather indistinct ones; punctures of the head and thorax 
dense, those of the thorax larger than those of the head. Radial cell open at the 
apex. Abdomen shining, the punctures of the first two segments about the same 
size as those of the head, not confluent, the punctures of the second segment a little 
more separated than those of the first segment; the third segment has the punctures 
confluent. Pits rather small, distinct, more or less oval in outline, about fourteen 
in number. Lower lateral margin of the third segment is slightly bisinuate; teeth 
short, broad, obtusely triangular. Color bright green, with a very few purple reflec- 
tions; antennz beyond the second segment black; tarsi brownish; tibial spurs 
yellowish. Facial basin with long, dense, white hair; head, thorax, legs and the 
abdomen (the hair of the abdomen is short) with long rather dense gray or whitish 
hair. Wings hyaline, beyond the stigma the radial cell is slightly cloudy, venation 
dark brown. 
1 The facial carina is the transverse carina above the facial basin, 
