PLATYNIN.-E 21 



intervals broadly convex, the third with four to five rather strong 

 punctures, the first near the third, the others nearer the second, 

 stria; met-episterna not one-half longer than wide; anterior male 

 tarsi somewhat convex, only moderately dilated. Length (cf) 



10. o mm.; width 4.0 mm. California, — Leng sulcata Dej. 



Body more oval, convex, shining, piceous-black, the anterior parts 

 usually more rufous; under surface piceo-rufous, the legs dark 

 rufous; head barely visibly longer than wide, three-fifths as wide 

 as the prothorax, with short tempora and broad neck; eyes moderate 

 in size and convexity; anterior impressions short, parallel; antennae 

 not quite half as long as the body, piceo-rufous, the basal joint 

 somewhat paler; prothorax but very little wider than long, the 

 parallel sides very evenly and rather feebly arcuate from apex to 

 base, the latter somewhat wider than the moderately sinuate apex, 

 transverse, broadly, feebly sinuate in median three-fifths; basal 

 angles rounded, the apical also rounded and only very slightly 

 prominent; transverse impressions distinct, especially the posterior, 

 the stria rather fine but deeply impressed; fovea broad, shallow, 

 somewhat punctate and including a short longitudinal elevation; 

 scutellum and scutellar striae short; elytra oblong-oval, not or 

 barely one-half longer than wide, fully one-half wider than the 

 prothorax, the sides subevenly rounded; apex rather obtuse; striae 

 rather fine but sharply defined, nearly smooth; intervals flat, some- 

 times feebly convex internally in the male, the third with four 

 punctures, the first two adjoining the third, the others the second, 

 stria; tarsi with the fourth joint feebly emarginate and transverse 

 at apex, the first three of the anterior in the male distinctly dilated, 

 the second barely longer than wide. Length (cf 9) 7.8-9.3 mm.; 

 width 3.4-3.8 mm. California (San Francisco Bay). Six examples. 

 [Anchomenus striatus Dej.] striata Dej. 



The general outline and other external characters, particularly 

 the relatively large, quadrate prothorax, are strongly remindful 

 of the Alaskan mollis Dej., which however is not a Platynid in 

 the strict sense, but belongs to the genus Pristodactyla, and is 

 approached closely by two species in my collection from Arkansas 

 and Colorado. These species sulcata and striata of Dejean, are so 

 peculiar in habitus, with prothorax recalling Calathiis rather than 

 Agonum or Anchomenus, that I think the genus Tanystola must be 

 regarded as valid without much doubt. 



Anchomenus Bon. 

 There is a peculiarity of habitus distinguishing the numerous 

 species of this genus from any of the others here defined and caused 

 principally by the reduced size of the anterior parts, when com- 

 pared with the hind body, the well defined and generally rather 



