Among a large series of Coleoptera collected by Mr. C.H. T. Townsend in the northwestern part of Mexico and forwarded to some years ago, I not an interesting new Carabus, which may be described as follows:-

Carabus Townsendi, n. sp.—Somewhat similar to Forreri, Bates— Ann. & Mag., N. Hist, ser. 5 IX, p.320— from Durango, but narrower in form, the elytra having similarly close-set unimpressed series of very minute punctures but having each only two sereis of larger, widely-spaced, impressed foveæ, the inner of the three series of Forreri being wholly absolete, the middle series only present in basal half and the outer extending only to apical fourth, the lateral margin more narrowly reflexed and with bluish reflection. Length, 21 mm.; width, 9 mm.