112 Clarence E. Mickel 
Passaloecus Shuckard 
KEY TO THE SPECIES 
Females 
Third antennal joint distinctly longer than the fourth; the two longi- 
tudinal parallel impressions on anterior portion of mesonotum not foveo- 
late; legs black; anterior tibiae in front and base of the four hind 
tibiae, yellow; tarsi testaceous; length 6-8 mm, .......... mandibularis 
Third antennal joint not longer than the fourth; the two longitudinal im- 
pressed lines on the anterior portion of mesonotum strongly foveolate; 
apex of femora, tibiae and tarsi, yellow testaceous; length 5 mm., 
annulatus 
Males 
Antennae not spinose or dentate beneath, but strongly rounded out, black 
above, white beneath; two impressed lines on anterior portion of 
Mmesonotuml strongly, LOveOlate faacsiemecees one eae acinar annulatus 
Antennal joints 5-9 beneath spinose at tip; antennae black beneath, 
mandibularis 
Passaloecus annulatus (Say). 
1837. Pemphredon annulatus Say, Bost. Journ. Nat. Hist., I, p. 379. 
1892. Passaloecus annulatus Fox, Trans. Amer. Ent. Soc., X1X, p. 
318. 
1908. Passaloecus mandibularis H. S. Smith, Univ. Nesr. STupiEs, 
VIII, p. 393. 
Females 7: Glen (7) ; August 13 to 20; visits flowers of Soli- 
dago sp. 
Passaloecus mandibularis (Cresson). 
1865. Pempredon mandibularis Cresson, Proc. Ent. Soc. Phil., IV, p. 
487. 
1892. Passaloecus mandibularis Fox, Trans. Amer. Ent. Soc., XIX, 
p. 320. 
Females 1: Monroe Canyon, August 19, 1912 (R. W. Dawson). 
MISCOPHINI 
KEY TO THE GENERA 
1. Front wings with one or two cubital cells, or with none, pygidial area 
WAM EIT Sirs eels o eecnaradeve ete ae tector eRe creer ae ae etereters Miscophus 
Front wings with two or three cubital cells; pygidial area present; mar- 
ginal cell most frequently but not always truncate, with an ap- 
PENMdaAEe I Misses cite elele Mette Ones latale ates eet teke ich oe cre Meena 2 
