282 THE CANADIAN ENTOMOLOGIST. 



apical third is a white dash ; tarsi all red ; abdomen black at base, but 

 the other dark parts largely reddish, though never bright ; each segment 

 has a broad creamy-white band, those on the first two interrupted by a 

 red line in the middle ; the first three bands have a dark notch sub- 

 laterally on the posterior edge ; the fourth has a dark spot on each side ; 

 and the fifth has the notch deep and on the anterior edge ; apical plate 

 notched ; venter ferruginous, banded with white. 



Hab. — N. Yakima, Washington State, Sept. 26, 1903 ( Eldred 

 Jenne). The abdomen is marked and coloured much as in N. Croichii, 

 var. nigrior, but the sculpture is difi"erent. The closest affinity is probably 

 with JV. Fascoensis, which is quite differently coloured. Although the 

 anterior cox?e are not spined, they have a minute red tubercle, only 

 distinctly seen with the compound microscope, and I believe the insect is 

 not without real affinity to Micronomada. 



THREE NEW SPECIES OF BEES. 



BY J. C. CRAWFORD, DALLAS, TEXAS. 



Perdita Cockerelli, n. sp. — $. Head and thorax green, finely 

 roughened, metathorax sometimes more bluish ; face up to antennae, 

 including labrum and mandibles, except tips, lateral face-marks running 

 to a point about half way between point of insertion of antennae and 

 summit of eyes, narrow inferior orbits half way up, scape in front, large 

 spot on tubercles, connected with a spot on prothorax and also with coxal 

 cavity, spot on tegulae, all of legs except black stripe on rear of anterior 

 and intermediate femora and tibiae and basal half of all coxae, yellow ; black 

 stripes on front and rear of hind femora connected below, hind tibiae, black, 

 with a yellow stripe in front, flagellum reddish testaceous below; wings milky 

 hyaline, nervures pallid, costa, radius more or less and margin of stigma 

 brownish ; tegulge pallid ', pubescence of head and thorax long, white, 

 abundant on pleura and cheeks, tarsi yellowish testaceous, hind tarsi dark ; 

 abdomen brownish black, segments 1-5 with yellow bands narrowly 

 interrupted medially ; that on 5 sometimes reduced to two spots ; venter 

 yellow, tip dark. 



Length, 5^^ to 6 mm. 



? . — Similar to $ in colour, the markings cream coloured and con- 

 fined to following : clypeus, except two dots and two longitudinal lines 

 parenthesis shaped, not reaching base of clypeus or these connected with 

 the dots or broken medially, supraclypeal mark two dots, or these 



August, 1906 



