126 Journal New York Entomological Society. [Vol. xxvi. 



Dr. J. Beqnacrt spoke " On New and Interesting Bees, chiefly from Ari- 

 zona " captured by him while a member of the Cornell Transcontinental Auto- 

 mobile Expedition. These were Emphor bombiformis Cress., found on mud 

 road on left bank of Sabine River in Louisiana, which showed that Emphor 

 ftiscojubartus Ckll. found near Arlington, N. J., by Grossbeck, and Cape May, 

 N. J., by Davis, was distinct, not a synonym. 



Dietinomia marginipennis found on flowers of Helianthus annmis near 

 Tempe, Ariz., which proves to have a pollen gathering brush beneath the 

 abdomen as well as on the legs. 



Perdita ? n. sp. An exceedingly small bee, 4 mm. long, found near Tempe, 

 Ariz., on the flowers of a trailing euphorbia. It was abundant but too small 

 to be caught in the net and the great heat made the labor of catching them by 

 crawling up with a collecting bottle, too arduous to be long continued. 



Caxipolxcana yarrozvi Cress., a crepuscular bee taken about 5 :oo A. M. 

 in Texas on desert willows, where it was detected by its buzzing before it 

 became light. 



Heiuisia morsel Ckll. and rhodopus Ckll. were found on Centaurea flow- 

 ers near water tanks east of Sierra Blanco, Texas, while carrying water 

 around the end of a freight train, but the absence of a net necessitated catch- 

 ing them by hand. Dr. Bequaert said that the females had very good stings. 



Xenoglossa particia Ckll., another crepuscular species, was found on flow- 

 ers of wild squash which open in the evening and close before morning. Often 

 they could be found by day hidden in the closed flowers. 



Dr. Bequaert pointed out in connection with these crepuscular bees cer- 

 tain characters in the ocelli and the color common to all. 



Protoxcra gloriosa Fox was shown for its beauty and five other insects, 

 a syrphid fly, Sphixiiiwrplia loezvii Williston, a Polistes navajoe Cress., and 

 three Megacanthopus flavitarsis Sauss., for their similar coloration, which is 

 even more apparent in life than in dried specimens. 



Mr. Davis said the colony of Emphor he knew of at Cape May occurred 

 in a path worn hard by constant use. 



Mr. Engelhardt said the primrose and low euphorbia flowers were very 

 attractive to crepuscular insects in southwest Utah, as he had observed while 

 collecting specimens of Sphinx. 



In reference to the activity of Hymenoptera at night, Mr. Davis said his 

 experience in hunting at night with a lantern indicated more activity than 

 might be suspected. Camponotus americanus was certainly more active at 

 night than by day. He quoted also the following passage from Rev. J. G. 

 Wood's " Insects at Home," p. 354, to show the activity on moonlight nights 

 of Vespa crabro : "The successful capture of a hornet's nest is a very diffi- 

 cult business and that of a wasp's is child's play to it. In the first place it is 

 much more difficult to cut a nest out of a hollow tree than to dig it out of the 

 earth, and in the next place the horxiet zcorks all nigJit, provided the moon 

 shines, whereas the wasp stays at home." 



Mr. Woodruff exhibited a number of depauperized Spermophagus rohinia; 



