304 GEO. II. HORN. 31. D. 



AS! DA Latr. 

 A. msicra n. sp. — Form slender, resembling Eleodes extricata. Black, mode- 

 rately shining. Head coarsely and on the occiput densely punctured. Thorax 

 at the sides longer than wide, narrower in front than at base, sides feebly arcuate 

 and obtusely margined, hind angles acute and slightly divergent, disc slightly 

 convex, sparsely punctured at middle, confluently punctured near the sides, base 

 very feebly bisinuate. Elytra not wider at base than the thorax, sides not mar- 

 gined, humeral angle slightly reflexed. oval, broadest behind the middle, surface 

 sparsely punctured and slightly wrinkled. Prothorax beneath coarsely punc- 

 tured, abdomen subopaque, scabrous. Length .54 inch ; 13.5millim. PI. IX, fig. 10. 



This species is the most slender at present known in our fauna, and is 

 the only one with the thorax gradually narrowed from base to apex 

 with nearly straight sides. 



Collected by Prof. Snow in New Mexico, occurs also in Arizona. 



EUSATTUS Lee. 



E. polittlS n. sp.— Oval, very little longer than wide, convex, black, shin- 

 ing. Head very sparsely punctate in front. Thorax very narrowly margined, 

 base bisinuate, the hind angles obtuse, surface sparsely punctate at the sides, 

 nearly smooth at middle. Elytra with very fine punctures, very remotely placed, 

 sides rounded not margined, the epipleurae gradually wider from apex to base. 

 Presternum coarsely punctured in front, the intercoxal process and tip margined. 

 Body and abdomen very sparsely and finely punctulate. Length .40 inch; 10 millim. 



This species by its smooth surface resembles laevis Lee, while its form 

 is more nearly that of difficilis Lee. It differs, however, from all those 

 with rounded sides to the elytra (except puberulux) in having the pres- 

 ternum margined. This character I find to occur in robustus Lee. and 

 costatus Horn, which have strongly margined sides to the elytra. 

 Occurs at Santa Barbara, California. From C. F. Grissler. 

 E. dilatatus Lee, should be united with muricatus Lee. 

 E. puberulus Lee, in addition to the small scale-like hairs of the sur- 

 face, differs from muricatus in having the prosternum distinctly margined. 

 The following amended table will enable our species to be distin- 

 guished : 



Elytra with a distinct lateral margin 2. 



Elytra not margined 5. 



2. — Epipleurae occupying the entire space below the margin ; prosternum dis- 

 tinctly margined at tip robustus. 



Epipleurae narrow, suddenly broader at base 3. 



3. — Prosternum margined at tip; elytra subcostate and granular COSfaitus. 



Prosternum not margined at tip 4. 



4. — Elytra with faint costae and transverse reticulations reticulatus. 



Elytra coarsely and irregularly eroded erosus. 



5. — Prosternum margined at tip 6. 



Prosternum not margined 7. 



6. — Elytra subopaque, punctured, with fine scale-like hairs piiltei'liIllK. 



Elytra smooth, shining politus. 



