414 CALIFORNIA ACADEMY OF SCIENCES. 



Emmenastrichus erosus n. sp. 



Moderately elongate as Emmcn. longiihis, piceous, dull. 

 Head densely coarsely punctate, sparsely hairy. Thorax 

 nearly twice as wide as long, apex slightly narrower, 

 sides feebly arcuate, base almost squarely truncate, hind 

 angles rectangular, apical angles prolonged to the front, 

 disc sparsely hairy, coarsely and closely punctate, the 

 punctures elongate and densely crowded at the sides. 

 Elytra rather obtuse at apex, disc with striae of moderately 

 coarse and closely placed punctures, intervals flat, uni- 

 seriately punctate, the third and fourth biseriatel}^ all 

 the punctures bearing a short, semi-erect fulvous hair. 

 Prothorax beneath coarsely punctate, the punctures of 

 the pleurae coarser than those of the sternum. Meso- 

 and metasternum similarly punctate. Abdomen much 

 less coarsely and less closely punctate. Body beneath 

 inconspicuousl}^ hairy. Femora sparsely punctate. 

 Length, .28 inch; 7 mm. 



One specimen. San Jose del Cabo. 



Centrioptera angularis n. sp. Plate vii, fig. 4. 



Form more robust than usual in the genus, approaching 

 Cryptoglossci. Head wanting in the specimen. Thorax 

 trapezoidal, broader than long, sides arcuate in front, 

 sinuate behind the middle, the hind angles acute and 

 everted, anterior angles acutel}^ prominent to the front, 

 disc moderatel}?- convex, a slight depression along the 

 base, surface very finely sparsely punctate. Elytra oval, 

 approaching the form of Cryptoghssa, disk slightly de- 

 pressed, surface subsulcate w^ith small distant murications 

 in the grooves, intervals slightly convex more evidentl}^ 

 muricate especially at the sides, apex gradually declivous. 

 Prothorax beneath slightly wrinkled. Metasternum with 

 few coarse punctures. Abdomen ver}^ sparsely punctate. 



