THE CANADIAN ENT()MOLOGIST. 167 



Strongly dusky at apex; nervures dark ; anterior tibiae, and all the tarsi, 

 with short fulvous hair on inner side ; abdomen shining, strongly, not 

 densely, punctured ; apical hair-band on first segment dense and entire, 

 the other apical bands successively thinner, except at sides, beyond ihe 

 second segment hardly appreciable dorsally ; transverse sulci on second 

 segment oblique ; a short white subbasal band at sides of second segment ; 

 on segments 3 to 5 very strong subbasal hair- bands, broadly interrupted 

 in the middle ; sixth segment deeply excavated in middle, the upper 

 apical margin with seven short teeth, a broadly triangular median one, 

 and three on each side ; at the lower apical level are the usual two teeth, 

 long and sharp, about one mm. apart ; at the sides of the sixth segment 

 the teeth are very long and sharp, but at the sides of the fifth are no teeth, 

 although very minute tubercles can with difiiculty be seen ; fourth ventral 

 bidentate. 



Coelioxys quercina, n. sp. — Male; Oak Creek Canon, Arizona, 6,coo 

 ft., August (F. H. Snow, 1974). 



Length, 11 mm. or rather over ; black, with white hair ; tegulce clear 

 red ; mandibles black ; antennae black, the flagellum faintly brownish 

 beneath ; anterior femora above, in front and at apex, middle and hind 

 femora at apex, tibiae (the hind ones broadly suffused with blackish on 

 outer side) and tarsi bright ferruginous ; spurs red ; eyes light green, with 

 short hair (about half as long as in C. erysimi) ; thorax above with the 

 usual large punctures ; scutellum rounded behind ; axillar spines long and 

 straight ; pits at base of metathorax minute and obscure ; abdomen with 

 a strong apical hair band on first segment, the others successively weaker, 

 as in C. erysimi; first segment with a basal band ; the others with 

 interrupted basal or subbasal bands, becoming successively stronger, 

 broader and less interrupted, that on the fifth almost entire ; fifth segment 

 not toothed at sides, sixth with well-developed sharp lateral teeth ; apex 

 formed as in C. erysimi, but the teeth ^are smaller ; fourth ventral bidentate. 



Coelioxys fr agar ice, n. sp. — Male ; Strawberry Valley, San Jacinto 

 Mts., California, 6,000 ft., July 17 (F. Grinnell, jr.). 



Length about io>^ mm. (abdomen extended) ; black, with white 

 hair ; tegulte bright red, with a tuft of white hair in front ; mandibles and 

 antennae black ; legs black, the tarsi and spots at apices of femora and 

 tibiifi rather dark red ; eyes pale greenish-ochreous, the hair short, as in 

 C. quercina; head and thorax above with the usual large punctures ; 



