SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. 57 



2. Lateral lobes of last segment spine-like, pointed 3 



Lateral lobes of last segment broadened 5 



3. Lateral lobes strongly curved; mesotliorax with yellow 



marginal marks (Europe) manicatnm, L. 



Lateral lobes straight; mesothorax all black 4 



4.Size large ; clypeus with two black spots on upper part ; an- 

 terior tarsi largely light yellow in front (So. Calif.) 



banningense, n. sp. 



Size smaller ; clypeus all yellow ; anterior tarsi black in 



front. (Pecos, N. M.) lupinellum, n. sp. 



5. Light markings of abdomen confined to sides ; size large 



(Europe) laterale, Latr. 



Light markings of abdomen not confined to sides 6 



6. Last segment of abdomen ferruginous 7 



Last segment of abdomen not ferruginous 8 



7. Yellow of abdomen very bright; the bands continuous 



in the middle on third and following segments (So. 



Calif.) tricuspidum, Prov. 



Yellow of abdomen pale ; none of the bands continuous 

 in the middle ; venter of abdomen red (New Mex- 

 ico) porterae, Ckll. 



8. Lateral lobes of last segment entirely black, divergent 



and strongly curved inwards at the end ; none of the 



abdominal bands united in the middle (Calif.) 



californicum, Cress. 



Lateral lobes not so ; when entirely black, insect smaller . 9 



9. Tegulae yellow and black, or rarely yellow and reddish. .10 

 Tegulae entirely apricot-color (So. Calif) . . palmarum, n. sp. 



10. ]\Iesothorax entirely black ; last abdominal segment en- 



tirely black, or with small yellow spots ; a small yel- 

 low spot above each eye 11 



Mesothorax with some yellow on margins ; last abdom- 

 inal segment with conspicuous yellow markings, or 

 nearly all yellow 14 



11. Lateral lobes of apical segment short and very oroad, 



of the general type of A. jocosum; average size of 



insect smaller (So. Calif.) palliventre, Cress. 



Lateral lobes of apical segment elongated, of the gen- 

 eral type of A. cognatum; average size of insect larger. 12 



12. ^Markings of abdomen orange; abdomen shining, with 



sparse punctures (So. Calif.) saxorum, n. sp. 



^Markings of abdomen yelloAV ; abdomen more closely 

 . punctured 13 



13. Tibiae with broad yellow stripes (So. Calif.) 



collectum, Huard. 



