206 PROC. ENT. SOC. WASH., VOL. 20, XO. 9, DEC., 1918 



BIBLIOGRAPHY. 



BANKS, N. At the Ceanothus in Virginia. Ent. News, xxiii, No. 3, March 

 1912, pp. 102-110. 



Records Chrysops niger, fallax and uniirittahis and Tabnnnx imlnno- 

 cerus from Falls Church and vicinity, p. 109. 



HINE, JAMES S. Tabanidae of Ohio, with a catalogue and bibliography 

 of the species from America north of Mexico. Ohio Ac. Sci., Special 

 paper, No. 5, 57 pp., 2 pis., May 1, 1903. 



Six species of Chrysops and two of Tabanus listed from District of 

 Columbia. 



KNAB, F. What is Tabanus mexicanus? (Diptora, Tabanidae). Insocu- 

 tor Inscitiae Mens. 4, 1916, pp. 95-100. 



Records T. flavus Macq., from Garret t Park, Md. 



McATEE, W. L. Facts in the life history of Goniops chrysocoma. Proc. 

 Ent. Soc. Wash. XIII, No. 1, (1910), 1911, pp. 21-29, Pis. 1-3. 



Date of appearance and egglaying, egg guarding, parasites, habits 

 on Plummers Island, Md. Part of these notes presented at meeting of 

 July 7, 1910, see p. 70 same volume. 



OSTEN-SACKEN, C. R. VON. Prodrome of a monograph of the Tabanidae 

 of the United States. Mem. Boston Soc. Nat. Hist. 2. 



Part 1. The genera Pangonia, Chrysops, Silvius and Haematopota, 

 pp. 365-397, April 1875. 



On -i/sops moechus and C. sir i at us originally described from ma- 

 terial in part from the District of Columbia; C. univitlatus recorded. 

 Part 2. The genus Tabanus, pp. 421-479, April 20, 1876. 



Five species recorded, one being T. varicynlns Fabr., for which wo 

 have no other record. 

 Supplement, pp. 555-560, March 2, 1878. 



Describes Tabanus exul from material collected at 4 localities, one 

 of which is the District of Columbia. This is a synonym of T. 

 abdominalis. 



TOWSEND, C. H. T. Contributions to the Dipterology of North America 

 II Tabanidae, Conopidae, Tachinidae, etc. Trans. Am. Ent. Soc., 

 22, pp. 55-60, March, 1895. 



Gives local records for two species of Chri/sops, and two of Tnbnmts, 

 besides Alijlot-us baa. 1 which is described as now. 



A NEW COLLETID BEE FROM ECUADOR. 



BY T. D. A. COCKIOREI.L. 



Colletes rohweri, new species. 



M uli . Length about 8 mm., anterior wing 5.S mm. ; black, the head and 

 thorax with long hair; head broader than long; malar space square; n an- 

 dibles rhoslnul-rod apically: labrum with two obtuse ribs; clypeus with 



