1974] 
Peck — Catopocerus 
383 
Distribution. Southwestern Pennsylvania (map 2). The type 
locality, Allegheny City, lying on the north shore of the confluence 
of the Allegheny and Monongahela Rivers, was incorporated into 
the city of Pittsburgh near the beginning of this century. 
Material examined. Pennsylvania. Allegheny, 1 female, lectotype 
3027 (ANSP) ; 2, (ANSP, CM). Beatty, 1 female (USNM). 
Charleroi, 2 (MCZ, UK). Jeannette, vi. 1901, 2 (CM). Pitts- 
burgh, ix, 2 (CM). St. Vincent, 3 (Ulke colln. in CM; MCZ). 
Washington Co., 1 female (Fall colln. in MCZ). State label only, 
1 paratype no. 3027 (ANSP); 1 (UK). 
Biology. The available information on the species has been pre- 
sented by Hamilton (1897). He found the first specimen in Decem- 
ber, 1872, “about a foot under ground beneath a large impacted 
boulder in a wild mountainous place.” Several individuals were seen 
but only one was collected because the pale color and remarkable 
swiftness led Hamilton to believe they were young roaches. This 
and a second specimen found dead by Hamilton the following June 
on a wooded hillside were those which Horn had for description. 
Other specimens were taken later by other collectors in winter months 
under bark, under stones, and by sifting decaying leaves. A group of 
twelve was taken in late November under a log in a wooded ravine 
around a large dead elaterid beetle larva upon which they were prob- 
ably feeding. I have not seen specimens taken since the turn of the 
century. 
Catopocerus ulkei Brown 
Fig. 4, 5 ; Map 1 
Catopocerus ulkei Brown 1933 ; 215. Holotype female in CNC, seen. 
Type locality; District of Columbia. 
Pinodytes cryptophagoides Mannerheim (in part), Horn, 1880: 249; 
1892: 46; Hamilton, 1894: 16. Misidentified. 
Diagnosis. The species is separated from others by its small size, 
the subequal second and third antennal segments, and the flattened, 
downward curved tip of the aedeagus. 
Redescription. Length 1.4-2. 2 mm. Width 0.71-0.94 mm. Color 
uniform dark reddish-brown, shining. Shape oblong. 
Head with trace of eyes as depigmented spot on side of head in 
some pale specimens ; vertex finely punctulate, finely striolate. Anten- 
nae well supplied with hairs throughout length; segments VII, IX, 
X supplied with dense vestiture of long and short hairs; I stout; II 
and III equally long; III narrower at base than II; IV, V, VI equal, 
globose; VII as long as broad; VIII smaller than VII, larger than 
