212 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



1 female, Davis, May 12, 1958, A. D. Telford; 1 female, Edgemar, 

 San Mateo Co., Aug. 10, 1950, E. C. Carlson. 



Tendipes (Tendipes) attenuatus (Walker) 



Chironomus attenuatus Walker, List of specimens of dipterous insects in the 

 British Museum, pt. 1, vol. 1, p. 20, 1848. 



Males: Wing length, range 2.59-4.55; mean 3.59 mm. (51); leg 

 ratio, range 1.29-1.64; mean 1.46 (48); antennal ratio, range 2.75- 

 4.1; mean 3.4 (42). 



Females: Wing length, range 3.37-4.44; mean 3.86 mm. (15); 

 leg ratio, range 1.24-1.72; mean 1.44 (11). 



Although there is a considerable difference between the figure for 

 antennal ratio given by Townes and that presented here, I do not 

 consider it to be biologically significant but rather a reflection of the 

 few measurements used b}^ Townes. 



Material examined: In Darby: Four males, 2 females, Davis, 

 July 1, 29, 1957, D; 1 male, 1 female. Rio Linda, July 19, 24, 1957, 

 D; 1 male, 1 female, Aug. 16, 1958, 1 male, Aug. 2. 1958, 1 female, 

 July 24, 1957, D. In UCLA: 2 males, 2 females, Huntington Beach, 

 Feb. 20, 1950, J. G. Shanafelt; 1 female, Mar. 9. 1949, G. Barnes; 

 3 males, 3 females, Devil's Gate Dam, Flintridge, Los Angeles Co., 

 Apr. 12, May 10, 1955; 1 male, Lee's Lake, Chatworth, Los Angeles 

 Co., Aug. 10, 1950, B; 1 male, 1 female, El Centro, Imperial Co., 

 July 9, 1950; 2 males, Bradley, Monterey Co., Aug. 28, 1949, B; 1 

 male, Sherwood Lake, Ventura Co., July 26, 1952, R. X. Schick; 

 1 male, San Vincente Lake, San Diego Co., July 9, 1952, R. X. Schick; 

 12 males, 10 females, Midway City, Mar. 21, 1955, J. G. Shanafelt; 



3 males, 4 females, Topanga Canyon, Los Angeles, May 14, 1952; 

 1 male, 1 female, Indian Wells, Riverside Co., May 9, 1952; 3 females, 

 Whitmore Tub, Mono Co., Aug. 3, 1952, McDonald; 3 females, 

 Bradley, Mono Co., Aug. 28, 1949, B; 1 female, Atwood, Mar. 18, 

 1955, J. G. Shanafelt; 1 female, Tanbark Flat, Los Angeles Co., 

 June 28, 1950, W. A. McDonald; 1 female, Beverly Glen, Los Angeles 

 Co., Feb. 22, 1951; 1 female, Cypress, Mar. 25, 1949, J. G. Shanafelt; 



4 females, Buena Park, May 1, 1951, J. G. Shanafelt. In USNM: 

 1 male, Berkley, Strawberry Canyon, Alameda Co., June 5, 1948, 

 W; 1 male, 1 female, June 1, 1948; 1 male, May 24, 1948, W; 1 male, 

 Feb. 1949; 1 female, Apr. 20, 1948, W; 2 males, 2 females, Visalia, 

 June 30, 1947, W; 1 male, Ventura Co., June 16, 1948, W; 1 male, 

 Pismo Beach, San Luis Obispo Co., June 24, 1948. W; 1 male. Selma, 



