COLEOPTERA OF BAJA CALIFORNIA. 423 



One specimen, Tantilles Mountains, Big Canon, Baja 

 California, lat. H, long. ii6. 



The last table of the species of Eusattus appeared in 

 Trans. Am. Ent. Soc, 1883, p. 304, and will now need 

 correction for the new species added since. 



Elytra with distiuct lateral margin. 2 



Elj^tra not margined. 5 



2. Epipleurai occnpjaug the entire space below the margin; prosternum 



distinctly margined. rohustus. 



Epipleurre narrow, suddenly broader at base. 3 



3. Prosternum distinctly margined at tip; elytra siibcostate. costatus. 

 Prosternum not margined at tip. 4 



4. Elytra with faint costae with intermediate reticulations, reiiculatus. 

 Elytra coarsely irregularly eroded. erosus. 



5. Prosternum margined at tip. 6 

 Prosteruiim not margined. 9 



6. Elytra snbopaque, punctured, with fine scale-like hairs, puberulus. 

 Elytra more or less shining, without hairs or scales. 7 



7. Side margin of thorax explanate and ciliate; clypeus incised, on each 



side. ciliatus. 



Side margin not explanate nor ciliate; clypeus not incised. 8 



8. Prosternum broad, coarsely punctured between the coxee; a distinct 



marginal line at the sides of thorax extending on the apex. 



secutus. 

 Prosternum narrow, smooth at tip; thorax without marginal line. 



politus. 



9. Epij^leura^ suddenly broader at base and smooth; tip of prosternum 



rounded and smooth. Icevls. 



Epipleuras gradually broader toward base. 10 



10. Epipleurse smooth. 11 

 Epipleurge punctate and hairy. 12 



11. Form oblong, shining. duUus. 

 Form oval. sculptus. 



12. Form oblong. productus. 

 Form oval, very convex. 13 



13. Thorax either smooth or with minute scattered granules. 



muricatiis. 

 Thorax distinctly punctate. difficiUs. 



E. sculftiis Champ, includes ohliteratus Ch. From 

 types sent and additional material before me they prove 

 to be variations parallel to those seen in reiiculatus.. 



2d Ser., Vol. IV. ( 28 ) August 3, 1894. 



