WESTERN QUARTERLY REPORTER. 167 



about five, the superior ones largest, the intermediate one of the in- 

 ferior series obtuse, sometimes obsolete; tibia, anterior pairs white 

 before ; anterior tarsi with elongated setae before, (as in many spe- 

 cies of Gorytes ;) abdomen with the posterior margins of the seg- 

 ments glaucous, above somewhat iridescent. 

 Length less than two- fifths of an inch. 



CRABRO Fabricius, Latreille. 



C. 10-maculatus. — Black ; tergum with five yellow spots each 

 side. 



Inhabits Missouri. 



Hypostoma and front with silvery hair ; antennae black ; seapua 

 and first joint of the flagellum, yellow ; thorax punctured ; collar 

 yellow, uninterrupted ; scutel and base of the metathorax [79] 

 with each a transverse yellow line ; pectus with two yellow spots of 

 which the posterior one is transverse ; wings brown ; feet yellow ; 

 thighs rufous, blackish at base ; spots of the tergum large and 

 distinct, the posterior one approaching more closely on the back; 

 beneath immaculate. 



Length three-fifths of an inch. 



Large and having one spot more on each side than G. macula- 

 tus Fab. 



. PHILANTHUS Fabricius, Latreille. 



1. P. canaliculate. [Ante, page 111.] [80] 



2. P. zonatus. [Ante, page 111.] 



Like many species of this genus, the Zonatus is subject to vary 

 in its tints and proportions of coloring. I have a fragment of a 

 specimen which has two yellow lines on the scutel, a yellow V, on 

 each side of which is a large yellow spot. Sufficiently distinct 

 from P. vertilabris L. by the form of the wing cells. 



CERCERIS Latreille. 



1. C. frontata. — Nasus elevated; body pale rufous ; tergum 

 yellow with rufous incisures. 



Inhabits Arkansa. 



Body pale rufous ; antennae and mandibles black at tip ; front 

 pale yellow; nasus elevated at tip from the clypeus, widely emar- 



