AMARINJE 257 



Body elongate, parallel and moderately convex, polished and deep black 

 above, the elytra feebly alutaceous in the female, black beneath, 

 the legs obscure piceo-rufous, the femora rather paler rufous; head 

 rather small, about half as wide as the prothorax, the eyes prom- 

 inent, the strioles well developed, deep and somewhat oblique; an- 

 tennae ferruginous, scarcely extending to the thoracic base (cf ), or 

 distinctly shorter (9); prothorax only two-fifths wider than long; 

 apex much narrower than the base, distinctly sinuate, the angles 

 broadly blunt; sides broadly, subevenly arcuate and rather finely 

 reflexed, becoming subparallel or even feebly convergent and nearly 

 straight in about basal half, the angles right, minutely everted and 

 prominent in the male; transverse impressions obsolete; median 

 stria fine, almost entire; basal foveae shallow, impressed and sub- 

 linear, with moderate scattered punctures, the inner at about lat- 

 eral fourth, the outer shorter and oblique; elytra one-half longer 

 than wide, barely at all wider than the prothorax, obtusely ogival 

 behind, the sides feebly arcuate; striae not very fine and rather deep, 

 distinctly punctate (cf), impunctate (9), the scutellar long, not 

 free; lateral series variably interrupted; intervals very feebly con- 

 vex. Length (cf 9 ) 9.0-9.5 mm.; width 3.5-3.8 mm. California 

 (Hoopa Valley, Humboldt Co.) and Oregon. Three examples. 



rectangula Lee. 



The female comes from the first named locality, the two males 

 from the second, so that I am unable to confirm the sexual nature 

 of the strial punctures, or the lateral prominence of the basal tho- 

 racic angles. The head is relatively larger in the two males than in 

 the female, but without further evidence it would scarcely be pru- 

 dent to maintain that two independent species are involved. 



Group IV 



This is a large section of the genus, including remotestriata, ter- 

 restris, chalcea and many others. The general habitus is so constant 

 throughout that I have considered it better not to form two groups 

 because of the presence or absence of a postero-lateral flattening 

 of the pronotal surface as suggested by Horn, especially as this is 

 not a very sharply limited character and is often very difficult to de- 

 termine. I have, however, used it in the definition of the species, 

 which are numerous and taxonomically rather troublesome. They 

 are generally of more or less pallid coloration, rather broad outline 

 and moderate convexity and but few exhibit any decided trace of 

 strial punctuation. The elytra are usually alutaceous in the fe- 

 male. So far as known to me they may be described as follows: 



T. L. Casey, Mem. Col. VIII, Oct. 1918. 



