74 Descriptions and Records of Bees. 



Andrena nigritula, n. n. 



Anch-ena nujrita, Morawitz, in Fedtschenko, Tiirliestan Mellifera, ii. 

 1876, p. 196 (not of Fabricius, 1775^. 



Dasiapis olivacea (Cresson). 



Brownsville, Texas, June, both sexes (F. H. Snotv). Xew 

 to Texas. 



Teiralonia Edicurdm vagahunda, Ckll. 



In my original acoonnt of this bee (Trans. Amer. Ent. Soc. 

 xxxii. p. 95) I stated that it Avas from flowers of Onosmodlum. 

 During my absence in June 1905 my wife collected a series 

 of bees from the flowers of a plant which she took to be 

 Pliacelia, and so labelled them. I did not sec the plant in 

 flower, but later in the year we found what appeared to be 

 the same, with abundant fruit, and it was Oiwsmodiuin caro- 

 linianum. This year we have found the original plant in 

 flower, and it is Phacelia heterophylla, Pursh ; but growing 

 in the same places, and almost exactly similar in foliage and 

 manner of growth, is the Onosmodivm. Such resemblance 

 ])etween two plants growing under the same conditions, but 

 of different families and having quite difl^crent flowers, is 

 interesting. 



The following bees were taken by my wife from flowers of 

 Phacelia heterophylla at Boulder : — Halictus meliloti, Ckll., 

 DiaUctvs anomahis (Bob.), Alcidamea simplex (Cresson),' 

 Megachile brevis, Say, Tetralonia Edivardsii vagabiinda, Ckll., 

 ('craiina nnnnla, Ckll., an.d C. neomexicana, Ckll. 



At Ward, Colorado (9000 feet), a Phacelia closely allied 

 to heteropIiylJa was found in quantity. It was recorded at 

 the time as P. circinata, following Coulter's manual ; but it 

 is not the true species of that name, and 1 suppose that it 

 must belong to P. alpina, Rydberg, 1900. It proved veiy 

 attractive to bees, and the following were collected on it at 

 Ward in July by my wife and myself: — Colletes phaceVite, 

 Ckll., AnHiidium emarginotiim, Say, A. conspicuum, Cress., 

 Osmia projji7i(jna, Cress., Mommwiha argent if rons, Cress., 

 Megachile latimanus, Say, M. vidua, Smith, Bombus Ed- 

 na rdsii, Cress., var., B. iridis phacelicp, Ckll. 



Thygater, Ilolmberg. 



In Trans. Amer. Ent. Soc. xxxii. p. 115, I called attention 

 to the identity of Thygater vitli Macroglossapis, and gave 

 reasons for supposing that the latter had priority. I Icaru 



