92 



Scutellum moderate, marked with large punctures. 



Elytra oval, rather longer and broader than the head and thorax, widest before the 



middle, very Bhining, faintly asperated in distinct, wavy rows, and punctured 



in stria?, apex broad, much rounded, and paler. 

 Legs rather long, pitchy black. 



/ 'ti.lf r parts piceous, mouth and metasternum paler. 

 Differs from other species in its minute size, very shining surface, and in sculpture. 



Ilnhihii, Ninth America. A single example of this very distinct species was found 

 by Mr. G. R. Crotch near San Diego in California. 



Actidium rotundicolle. 



A. rotundicolle, Casey, Bull. Calif. Ac. Sci. ii. p. 248, 1886. 



L. c. -fe lin. = 0"50 mm. — Elongato-ovatum, convexum, nitidulum, leviter 

 alutaceum, nigro-piceum, pilis argenteis parce vestitum ; capiti niagno, prominenti, 

 antiee obtuso, indistincte alutaceo; oculis modicis, prominulis, retropositis : pronoto 

 parvo, capite latiori, baud longiori, prope medium latissimo, leviter alutaceo, niti- 

 dulo, lateribus marginatis, antiee valde rotundatis, postice fortissime contractis, 

 margine basali leviter rotundata, angulis obsoletis ; elytris eapite atque pronoto 

 longioribus et parum latioribus, ante media latissimis, confertim et levissime 

 asperatis, interstitiis alutaceis, lateribus ovate-rotundatis et marginatis, apice 

 obtuso; pedibus robustis, hete rlavis ; antennis gracilibus, obscure flavis. 



Body elongate-ovate, convex, rather shining, finely alutaceous, pitchy black, 



sparingly clothed with silvery hair. 

 Head large and prominent, obtuse in front, indistinctly alutaceous ; eyes moderate, 



rather prominent, placed far back ; antenna? slender, dusky yellow. 

 Thorax small, broader but not longer than the head, widest near the middle, faintly 



alutaceous, rather shining, sides margined, much rounded in front, and very 



strongly contracted towards the base, basal margin slightly rounded with the 



angles obsolete. 

 Scutellum large, triangular, and alutaceous. 

 Elytra longer and rather broader than the head and thorax, widest before the 



middle, closely and very faintly asperate with the interstices alutaceous, sides 



ovately rounded and margined, apex obtuse. 

 Legs robust, bright yellow. 



Under part* nigro-piceous, mouth and palpi bright yellow. 

 Differs from all others in the peculiar shape of its thorax and faint sculpture. 



Habitat, North America. Found in Texas by Lieut. T. L. Casey, U.S.E. 



Actidium robustulum. 



A. robustulum, Casey, Bull. Calif. Ac. Sci. i. p. 324, 1885. 



L. c. ,',, hn. = 0"50 mm. — Elongato-ovatum, modice convexum, baud nitidum, 

 per totum alutaceum, nigro-piceum; capite magno, antiee producto, fortiter 

 alutaceo; oculis parvis, valde prominentibus ; pronoto sat magno, eapite latiori, 

 baud longiori, pone medium latissimo, fortiter alutaceo, depressione levi ante basim 

 impresso, lateribus marginatis atque una cum basi fere continuo rotundatis; elytris 

 ovatis, capite atque pronoto parum longioribus, baud latioribus, prope media 

 latissimis, fortiter alutaceis, stria Buturali distincta, apice acuto; pedibus modicis, 

 nigro-piceis ; antennis sat gracilibus, nigro-piceis. 



Body elongate-ovate, moderately convex, not shining, alutaceous throughout, nigro- 

 piceous. 



