1936] 
North American Nitidulidse 
115 
Pocadius dorsalis Horn, 1879, Trans. Amer. Ent. Soc., 7 : 
311. 
The color varies from black with a red basal spot on each 
elytron to testaceous. This species was described from 
“Mexico.” Dorsalis was based on the black form. In the 
United States it is found only in California ranging from 
Los Angeles Co. to an altitude of 2,500 feet, Carrville, 
Trinity Co. The Carrville specimens are dated June 19. In 
Mr. H. C. Fall’s collection is a specimen collected on March 
17 in Marin Co. from the “puff ball Lycoperdon gigan- 
teum 
Fig. 1. Profile of the prosternum in Pocadius. The dotted lines 
show the extent of variation. 1, P. basalis, holotype in solid line; 2, 
P. niger n. sp., holotype in solid line; 3, P. helvolus, the usual form in 
solid line; 4, P. fulviyeirinis, lectotype of P. dorsalis in solid line. This 
is the usual form; the least arcuate outline in Fig. 4 is identical with 
that of the European P. ferrugineus. 
Pocadius helvolus Erichson 
Pocadius helvolus Erichson, 1843, in Germar, Zeitschr. 
Ent., 4: 320. 
Pocadius brevius cuius Reitter, 1876, Stettiner Ent. Zeit, 
37: 318. 
Pocadius ferrugineus Chevr., 1863, Am. Soc. Ent. France 
(4) 3: 604 (in error). 
Pocadius infuscatus Reitter, 1874, Syst. Eintheil. Nitid., p. 
94. 
