Records of Bees. 281 



Perdita verlesina collaris, subsp. n. 



(? . — Head, mesothoraXj and scutellum yellowish green, 

 the mesothorax with slight coppery tints; metathorax blue- 

 green ; upper part of front wholly dull, lower part shining ; 

 flagellum bright orange, marked with black above at base; 

 sides of clypeus, lower border rather broadly, and a median 

 band yellow ; lateral face-marks transverse ; upper border 

 of prothorax, and large spots on tubercles, light yellow ; 

 middle and hind tarsi dark brown; second and following 

 abdominal segments with orange bands, deeply incised sub- 

 laterally, the middle portion of baud ou second segment 

 almost obsolete. 



Hub. Rito de los Frijoles, New Mexico, August (^Cockerell) . 



This resembles P. Itpachidis, Ckll., in the colour of the 

 thor.ix, and seems intermediate between lepachidis and 

 verbesincE. It may pro\e to be a distinct species. P. verbe- 

 sitKP, var. maculata, Ckll., has ( ^J ) yellow middle and hind 

 tarsi, the small joints more or less ferruginous. 



Perdita heliophila, sp. n. 



? .—Length 8-8-5 mm. 



Like P. (ilbipejinis, but head, thorax, and abdomen with- 

 out light markings ; front dull. Very like P. verbesince, 

 var. niyrior, with which I had confused it, but larger, hair 

 of head and thorax above ochreous, stigma pale orange. 

 The mesothorax is shining yellowish green. 



Hab. Mesilla, New Mexico, three, all at flowers of Heli- 

 anthus leiiticularis, Aug. 11 and 15 (^Cockerell). 



Perhaps a variety of P. albipennis, but the specimens are 

 all alike, and the appearance is very distinctive. 



Perdita crotonis undecimalis, subsp. n, 



$ . — No supraclypeal mark ; clypeus with two very broad 

 black bars, forming a figure 1 1 ; lateral marks very short, 

 not reaching level of top of clypeus, squarely notched on 

 inner side above ; metallic colour of head and thorax 

 green . 



Hab. Between Rowe and the Old Pecos Pueblo, New 

 Mexico, at flowers of Croton, Sept. 4 {W. P. Cockerel/). 



Perdita numerata, Cockerell. 



This was described from a female. A male, which I refer 

 here with confidence, is from Mesilla Park, New Mexico, 



