266 MEMOIRS ON THE COLEOPTERA 



out the length, rather widely and equally separating the black areas 

 from the side margin. Length (cf) 10.5 mm.; width 3.7 mm. 



California (Los Angeles) tigrina n. sp. 



Head (cf ) obviously narrower than the prothorax, much less developed 

 than in tigrina and not so densely punctate, the interspaces shining; 

 antennae nearly similar, dusky-testaceous throughout and very 

 opaque except basally, the tenth joint not quite twice as long as 

 wide; prothorax shining, the punctures rather strong and sparse, 

 dense only laterally, the vestiture long, rather sparse, not at all 

 concealing the surface; elytra narrower, moderately cuneiform, 

 barely a third wider than the prothorax, with stronger and more 

 separated punctures than in tigrina, the flanks not pale along the 

 pale lateral bead; legs more slender; body much smaller and narrower 

 than in tigrina. Length (cf) 8.8 mm.; width 3.0 mm. California 

 (locality unrecorded) reducta n. sp. 



There seems to be no suggestion of sexual diversity in thoracic 

 punctuation or vestiture in this genus, and I have but little doubt 

 that the species above defined are amply valid, though described 

 from very limited material except in the case of nitens. 



Leptura Linn. 



In our fauna this genus, which has been the recipient of many 

 discordant elements and, as now organized, has become a very dis- 

 couraging complex, in which species obviously allied are sometimes 

 widely separated in the series, may be divided very satisfactorily 

 into well defined subgeneric groups as follows: 



Antennae shorter, never as long as the body in either sex 2 



Antennae longer, as long as the body to much longer in the male 4 



2 Maxillary palpi more developed, very long; body large, the hind body 

 strongly cuneiform Group I 



Maxillary palpi of moderate size; hind body less convex or cuneiform as a 

 rule 3 



3 Prothorax rounded at the sides, or at least not angulate; last dorsal 

 segment of the female simple Group II 



Prothorax strongly angulated at the sides; last dorsal of the female 

 strongly carinate apically Group III 



4 Tibial spurs slightly ante-apical in insertion; tarsi less slender, some- 

 what hairy above as well as beneath; prothorax rounded to somewhat 

 prominent at the sides Group IV 



Tibial spurs apical; tarsi extremely slender, scarcely at all hairy above; 

 prothorax of peculiar structure, being a truncated cone with slightly 

 arcuate median parts of the sides, or a regular trapezoid slightly 

 prominent at apex and base Group V 



The third hind tarsal joint is strictly bilobed throughout. There 



