H. W. LEWIS. 183 



Var. A. — Body brown or red, instead of black ; borders of the abdomen some- 

 what fused with the brown or black ; antennae ferruginous with black in the 

 middle. 



Var. B.—P. crinitns billardieri Sauss. — Posterior parts of the head yellow ; orbits 

 and ends of the clypeus yellow. Thorax red ; prothorax bordered with yellow 

 in front and behind; scutellum bordered with yellow; metathorax black, with 

 two yellow lines; the first segment of the abdomen yellow on three sides, black 

 in the middle, the rest reddish, narrowly bordered with yellow. Wings brownish. 



Var. C. — Mesothorax black, with two small yellow lines ; metathorax with two 

 yellow lines. 



Var. D. — Two yellow lines on the posterior plate of the metathorax and two 

 on the sides. 



Sab. — America. 



P. criiiitiis lineatiis Fab. Worker. — Head ferruginous yellow, the re- 

 gion of the ocelli and an irregular line under the antennae, blackish ferruginous; 

 antennae ferruginous yellow, the first two joints blackish ferruginous as well as 

 the upper part of several of the middle ones. Thorax ferruginous brown ; two 

 longitudinal lines on the mesothorax, the borders of the tegulae and prothorax, a 

 mark under the wings, a line on the scutellum, one on the postscutellum, and a 

 scalloped mark bilobed at the top on each side of the metathorax, all ferruginous 

 yellow. Abdomen ferruginous brown, with the terminal borders of the segments 

 ferruginous yellow ; this border extends forward on the side of the segments. 

 Legs yellow, except the tips of the femora and the outer ends of the middle and 

 hind tibiae, which are black. Wings ferruginous brown, with violet reflections. 

 Length 16 mm. 



Hab. — America. 



P. aurifer Sauss. 9- — Black; mandibles, clypeus, orbits and a very open 

 V-shaped mark on the front yellow ; antennae orange ; the borders of the pro- 

 thorax, a mark under the wings, the tegulae the anterior border of the scutellum 

 and postscutellum and two lines on the metathorax yellow. Abdomen yellow, 

 base of the first two segments black, the black excavating the yellow in the mid- 

 dle and sometimes forming there a design, the third occasionally black in the 

 middle at its base. Legs black, ends of femora, tibiae and tarsi bright yellow. 

 Wings having a general golden tint or a ferruginous gray. Length 15 mm. 



Var. A. — End of the posterior tibiae black. 



Hab. — California, Colorado, Australia, Honolulu. 



P. fiiscatus (Fab.). — "Fuscous, spotted with ferruginous; first segment of 

 the abdomen with a yellow margin, second with two ferruginous spots. Length 

 and magnitude of P. annularis ; antennae black, base ferruginous. Head fuscous, 

 with the labium and mandibles ferruginous. Thorax fuscous, with a ferruginous 

 line on each side in front. Abdomen fuscous, the first segment with a yellow 

 margin, second with a large fulvous spot on each side. Feet variegated." 



Hab. — America. 



P. fiiNCatiiK iiiNtabilis Sauss. TT'or^-er.— Insect dark red, a little rose 

 colored ; base of the clypeus yellow; vertex around the ocelli black; antenna' 

 black in the middle; prothorax bordered, its angles without spines; underside 



TRANS. AM. ENT. SOC. XXIV. JUNE. 1897 



