CHIRONOMID MIDGES — SUBLETTE 203 



Bclkin and McDonald; 1 male, Selrna, July 10, 1947, W; 1 male, 

 Hume Lake, Aug. 20, 1947, W; 3 males, Oso Flaco Lake, San Luis 

 Obispo Co., June 23, 1948, W; 1 male, Davis, May 19, 1954, W. H. 

 Lange. In UCLA: 58 males, Saratoga Springs, Death Valley, Mar. 

 19, May 28, 1955; 9 males, Lee's Lake, Chatworth, Los Angeles, 

 Aug. 10, 1950, July 25, 27, 1952, B; 10 males, Whitmore Tub, Mono 

 Co., Aug. 3, 9, 1952, W. A. McDonald; 2 males, Aliso Creek, Orange 

 Co., May 8, 1955, C. L. Hogue; 2 males, Fish Spring, Salton Sea, 

 Imperial Co., Oct. 18, 19, 1954, Whitney. In UC, Davis: 1 male, 

 1.5 miles northeast of Red Lake, Alpine Co., July 25, 1955, E. I. 

 Schlinger; 1 male, Sacramento, June 6, 1957, M; 1 male, Elkhorn 

 Ferry, Yolo Co., Apr. 16, 1952, E. I. Schlinger. 



Faralauterborniella subcincta alamedensis new subspecies 



Holotype male: USNM 64710, Sunol, Alameda Co., Sept. 9, 1947; 

 W. 



Head, thorax, and abdomen entirely blackish brown; palpi, antennae 

 and legs concolorous dark brown. Thorax and abdomen with heavy 

 silvery pruinosity when viewed obliquely. Prealar bristles 2 (ma} r 

 be rubbed) ; dorsolateral bristles in a single row. Scutellum rubbed 

 but with punctae of a straight, transverse, anterior row of at least 

 12 bristles. Wings pale, anterior veins pale brown. Halteres basally 

 infuscate, distally pale. Fore tarsi with a short beard. Abdomen 

 heavily pilose. 



Wing length 2.22 mm.; leg ratio 0.96; antennal ratio 2.14. 



The genitalia is indistinguishable from that of P. subcincta sub- 

 cincta (Townes). 



Paratypes: In USNM: 3 males, 2 collected with the type. In 

 UCLA: 1 at Huntington Beach, Feb. 21, 1950. 



Wing length, range 2.15-2.41; mean 2.32 mm. (3); leg ratio, range 

 0.91-1.0; mean 0.96 (3); antennal ratio 2.05, 2.45 (2). 



P. subcincta alamedensis may be distinguished from P. subcincta 

 subcincta (Townes) by its darker color, larger size, higher antennal 

 ratio and generally lower leg ratio. 



Polypedilum (Polypcdilum) labeculosum (Mitchell) 



Figure 1,c 

 Chironovius labeculosum Mitchell, Journ. New York Ent. Soc, vol. 16, p. 14, 1908. 



This species was known only from three females from Hot Springs, 

 Arizona. It is separated from all other Nearctic Polypedilum by a 

 disconnected spot in cell Cui. The male, described below, is associated 

 on the basis of this diagnostic feature. 



Head, thorax and abdomen dark brown. Mesonotum with 2 con- 

 spicuous stripes of silvery pruinosity, narrowly separated on midline 



