504 Mr. T. D. A. Cockerell — Descriptions and 



and comparatively feeble Agrioiacla3 feed largely upon such 

 moths and Diptera as can be easily overpowered by them. 

 But, apart from this matter, the amount of information 

 which has so far been accumulated is hardly sufficient to 

 enable us to determine whether much discrimination is 

 exercised by Odonata in the selection of living things as 

 articles of food. 



58 Ranelagli Road, Ealing, W. 

 20th INIarch, 1914. 



LIX. — Descriptions and Records of Bees. — LTX. 

 By T. D. A. Cockerell, University of Colorado. 



Halictns hedleyi, Cockerell, var. a. 



(^ . — Hind tibise broadly dusky in middle ; second abdo- 

 minal segment red, with a very broad dusky apical shade, 

 third segment red at sides of base, otherwise black, fourth 

 black. 



Hub. "Cheltenliam, Victoria" {French, Froggatt coll. 184). 



This differs from H. hedleyi only in the reduction of the 

 red colour, and is presumably no more than an individual 

 variation. Toward the end of the original description of 

 //. hedleyi, venter is misprinted " vertex." 



Halictus vitripennisy Smith, var. a. 



? . — First abdominal segment red, with a transverse dark 

 maik. 



Hub. Purnong {S. W. Fulton, Nat. Mus. Vict. 146). 



Halictus dampieri, Cockerell. 



^ . — Brisbane, May 13, 1912 {H. Hackeri, Queensl. Mus. 



64j. 



Halictus pimclatus, Smith. 



Crovdon {S. W. Fulton, Nat. Mus. Victoria, 178, 181, 179, 

 239, 240, 243). 



Halictus erythrvrus, sp. n, (sphecodoides, subsp. ?). 



? . — Length a little less than 5 mm. 

 Bubcsecncc scanty, dull white : head ordinary, black, the 



