58 MEMOIRS ON THE COLEOPTERA. 



Atheta (Nemota) perpera n. sp. Subparallel, rather convex, shining, black, 

 the elytra dark piceous-brown, the legs pale, the punctures small, sparse, 

 not dense and scarcely asperate on the elytra, the vestiture rather sparse 

 and moderately coarse; head nearly as long as wide, slightly broadening 

 basally, the eyes moderately convex, at fully their own length from the base, 

 the carinae obsolete; antennae short, blackish, slender basally, the second 

 and third joints elongate, subequal, the fourth a little longer than wide, 

 thence gradually distinctly incrassate, the outer joints moderately transverse, 

 the last fully as long as the two preceding; prothorax moderately transverse, 

 much wider than the head but almost as wide as the elytral base, the parallel 

 sides evenly and moderately arcuate, unimpressed; elytra subparallel, a 

 little shorter than wide, much longer than the prothorax, the apices laterally 

 feebly sinuate; abdomen nearly as wide as the elytra, parallel, narrowing 

 just visibly apically, the fifth tergite longer than the fourth. Length 1.7 mm. ; 

 width 0.4 mm. California (Ojai), Fall. 



This species is aberrant in the tarsi, the basal joint of the posterior 

 being elongate though scarcely so long as the second. The meta- 

 sternum is transverse and does not project forward at all. The 

 elytra are as transversely convex as the pronotum, the suture 

 narrowly impressed at base. 



Atheta (Nemota) perspecta n. sp. Moderately slender and very feebly 

 convex, shining though with obvious micro-reticulation, the punctures nearly 

 as in the preceding, not close even on the elytra, the pubescence rather sparse, 

 short; color pale brownish-testaceous, the head and abdomen piceous, the 

 latter clouded blackish subposteriorly, the legs pale; head slightly transverse, 

 the eyes prominent, a little shorter and less prominent than the slightly 

 swollen tempora, the carinae obsolete; antennae dark, short though unusually 

 slender, very feebly and gradually incrassate, the second and third joints 

 elongate, the latter slightly the shorter, the outer joints narrowed basally 

 as in the preceding, slightly transverse; prothorax moderately transverse, 

 nearly as wide as the elytral base, distinctly wider than the head but less 

 markedly so than in the preceding, the sides parallel and very moderately, 

 evenly arcuate; elytra slightly shorter than wide, with feebly diverging sides, 

 much longer than the prothorax, the apices not evidently sinuate laterally; 

 abdomen almost as wide as the elytra, nearly as in the preceding. Length 

 1.7 mm.; width 0.36 mm. California. 



The coloiation will distinguish this species from any of the pre- 

 ceding and also the less incrassate antennae; the sterna are as in 

 the other species; the hind tarsi are missing in the type. 



Microdota Rey. 



The following species seem to be sufficiently allied in general 

 organization to Microdota amicula Steph., to be included in the same 

 subgeneric group, at least for the present: 



