206 Journal New York Entomological Society. [Voi. vi. 



reservation. The species is named after Lieut. Stottler, the Indian 

 Agent, whose work among the Mescalero Apaches excited our strongest 

 admiration. P. stoitleri is very near to townsendi (which occurs on a 

 different Bigelovice), but six 9 townsendi were compared with it, and 

 none show any tendency to intergrade. 



Perdita chrysophila, sp. nov. 



J'. Length 5.5 mm. Head and thorax very dark bhiish green, scutellum and 

 clypeus black, supraclypeal area feneous. Abdomen piceous-brovvn above and below, 

 the hind margins of the segments rather broadly hyaline; apex orange. Labrum 

 dark brown. Mandibles black with the tips dark rufous. Scape black, flagellum 

 very dark brown. Teguloe pale brown. Wings milky-hyaline ; costal nervure, mar- 

 gin of stigma, and radial nervure sepia-brown; the other nervures pallid. Pubes- 

 cence dull white. Legs piceous black, the tarsi becoming brown. 



Head very large, subquadrate; cheeks unarmed, shining, not very pubescent. 

 Front shining, microscopically tessellate, with distinct but very sparse punctures. 

 Face tolerably hairy. Thorax shining, tolerably hairy. Mesothorax and scutellum 

 with distinct but very sparse punctures. Metathorax shining, very obscurely sculp- 

 tured. Marginal cell with its poststigmatal portion much the longest ; its end 

 squarely truncate. Second submarginal narrowed more than half to marginal 

 Third discoidal excessively weak or wanting. 



Habitat : Organ, N. M., 5100 ft., September 2Sth, on flowers of 

 Verhesina encelioides, one taken others seen. Near to P. arcuata Fox, 

 to which it runs in table of Perdita, but it does not have the pale color 

 on mandibles and anterior tibife. 



Two other species of Perdita were taken on the trip, namely : P. 

 albovitlata, Ckll., Parker's Well, October 7th. Three 9 9 visiting 

 flowers of Baileya multiradiata. 



P. sphczralcece Ckll. Whitewater, October 6th, one 9 on Sphcs- 

 ralcea angustifolia. Organ, September 28th, three 9 9 at flowers of 

 Mentzelia, with no Sphceralcea near. The occurrence of this species on 

 Mentzelia is contrary to all previous experience, and surprised me much. 



I will take this opportunity of stating that the flowers visited by P' 

 callicerata and P. solitaria have now been examined with care; the 

 former visits Baileya multiradiata at Las Graces, the latter Pedis pap- 

 posa in Soledad Canon. 



ested, but I may as well give a list of determinations just received from Mr. Coquil- 

 lett through Mr. L. O. Howard, (i) On the Bigelovia at store below Agency, with 

 Perdita slot fieri: Exoprosopa sp., Phorbia sp. (2) On the Bigelovia at camp just 

 below Agency, Oct. 2 : Sparnopolius fulvus Wied., Phtkiria diversa Coq., Lordo- 

 ius diversus Coq., Exoprosopa caliptera Say, Anthrax syrtis Coq., Odofttomyia ni- 

 grirostris Loew, Pegomyia communis Walk., Sapromyza vulgaris Fitch, and Sar- 

 cophoga sp. Mr. Linell has also identified an QLcanthus, which was rather common 

 on the Bigeloviis just below the Agency, October 2d, as CE. fascia tiis. T. D. A. C. 



