AMERICAN HYMENOPTERA. 181 



Bombomelecta separata Cress. 



Trans. Am. Ent. Soc, vii, 1879, p. 204, J . 



Type, Coll. Am. Ent. Soc. Phila. Type locality, Nevada. 

 Nevada (Morrison). 



Bombomelecta separata var. maculata n. var. 



Separated from the typical species by the presence of a dot of 

 white appressed pubescence on each side of abdominal segments 

 three and four. 



Type, Coll. Am. Ent. Soc. Phila. Type locality, Salt Lake City, 

 Utah, 26, iv, 1896. One 9 , Condon, Oregon, 23, vii, 1899. 



Bombomelecta pacitica Cress. 



Traus. Am. Ent. Soc, vii. 1879, p. 204, 9 not % . 

 Bombomelecta thoracica var. pacifica Cress, Syn. Hym. N. Am., 1887, p. 298. 

 Melecta thoracica var. pacifica D. T., Cat. Hym., x (Apidai), p. 318. 



Type, Coll. Am. Ent. Soc. Phila. Type locality, California- 

 9 , California. One $ Calif, has the light pubescence almost 



white. One S Colorado, with light pubescence pale ochraceous. 



Two 2 's, Nevada, with light pubescence yellowish ochraceous. 



Bombomelecta fulvida Cress. 



Trans. Am. Ent. Soc. Phila., vii, 1879, p. 204. J . 

 Melecta thoracica, var. fulvida Cress., Tr. Am. Ent. Soc., vii, 1879, p. 204. 9- 

 Melecta thoracica var. fulvida D. T., Cat. Hym., x (Apidae), p. 318. 

 Bombomelecta thoraciea var. fulvida Ckll., Psyche, vii, Suppl., i, p. 11. 



Type, Coll. Am. Ent. Soc. Phila. Type locality, Nevada. 

 Nevada; Mesilla Valley, N. M., on Lycium (J. Casad.j. 

 Possibly only a race or variety of pacifica, but not related to 

 thoracica. 



Bombomelecta azygos n. sp. 



% . — Length 14 mm. — Head shining and roughened, greater part of tegument 

 hidden by the short black hair. Eyes converging below diverging above. Cly- 

 peus with closely arranged ill defined punctures shining, the anterior bonier with 

 a very narrow polished margin. Labrum almost flat, polished, irregularly punc- 

 tured, the punctures rather large but not well defined. Ocelli arranged as in 

 sygos. Mandibles heavy and short, one mandible overlapping the other extends 

 only halfway up. Scape densely covered with black pubescence, hardly longer 

 than the first joint of flagellum ; first joint of flagellum nearly as long as next 

 two united. 



Thorax; dorsulum punctured, the punctures moderate not sharply defined, 

 close together, the sculpture in greater part hidden by the yellowish ochraceous 

 pubescence. Scutellum rugulose, with a slight eminence on each side, covered 

 with black pubescence. Metathorax with a well defined triangular area, the 



TRANS. AM. ENT. SOC. XXJX. - MAY. 1903 



