COLEOPTERA OF BAJA CALIFORNIA, 383 



three transverse narrow yellow bands, the anterior turn- 

 ing down along the suture. Antennce entirely black. 

 Head oval, not closely punctate, sparsely hairy, palpi 

 pale. Thorax oval, as wide as long, apex truncate, sides 

 arcuately narrowing to the basal constriction, disc con- 

 vex, a slight median depression at base and a faint post- 

 apical constriction, surface coarsely punctured, the punc- 

 tures rounded at the sides but less dense at middle. Ely- 

 tra parallel, the apices truncate, sutural angle distinct, 

 surface with coarse cribrate punctures somewhat in stride, 

 and short erect black hairs; color dull blue-black with 

 three fascice, the anterior beginning with a broad base at 

 the humerus extends inward leaving the base then turn- 

 ing abruptly parallel with the suture, a second fascia at 

 middle, narrow, very slightly arcuate, the third fascia one- 

 fourth from apex, slightly arcuate. Sides of metaster- 

 num and the posterior edges of segments 2-3-4 '^^ sides 

 with moderately long white hair. Abdomen quite smooth. 

 Legs black with blue green surface lustre. Length, .38 

 inch; 9.5 mm. 



This insect is allied to illustris Horn (Trans. Am. Ent. 

 Soc, V, 1876, p. 231), and might even be an extreme 

 form of that, but the uniform coloration of the specimens 

 of illustris make it advisable to name the present form. 

 In illustris the antennte, except the last three joints, are 

 rufo-testaceous, as are also the legs; the basal band keeps 

 close to the margin and extends down the suture, the 

 middle band decidedly arcuate and the posterior very 

 oblique. 



One specimen. El Chinche. 



Hydnocera omogera n. sp. 



Form of discoidea, color black with a humeral vellow 

 white spot (the umbone black), or with the white form- 

 ing a transverse band immediately behind the umbone. 



