CERAMBYCID^E 299 



Tribe MESOSINI. 



Synaphoeta Lee. 



The species of this genus are of broad and rather flattened form, 

 remindful of certain of the Acanthoderes, but with narrower and 

 more cylindric prothorax; the elytra have two sinuous black or 

 brown fasciae from the lateral margins before and behind the middle, 

 the fasciae but very seldom crossing, though frequently nearly 

 attaining, the suture. The antennae are more or less nearly one- 

 half longer than the body in the male and only very little longer 

 than the body in the female; they are comparatively stout basally 

 and are fringed beneath with long hairs, dense in the male or 

 sparser in the female; the basal joint is long and obconic. The 

 prothorax is bilineate with black or brown and obtusely tuberculate 

 at the sides behind the middle. The species in my collection seem 

 to be four in number as follows : 



Humeri of the elytra very prominent and protuberant. Body of rather 

 large size, black throughout, clothed not very densely with gray 

 decumbent hairs mixed with some clusters that are fulvous, this 

 being especially evident at the margins of the black lines and fasciae, 

 these more nearly attaining the suture than in any other; antennae 

 sparsely ashy-pubescent, the joints densely cinereous at base, their 

 surface throughout very minutely, closely punctulate, mingled on 

 the basal joint with sparse and moderately large, perforate punctures, 

 becoming dense and coarsely rugose beneath; head throughout with 

 moderate, sparse perforate punctures, in addition to the minute 

 close punctulation; prothorax but little wider than the head, two- 

 thirds wider than long, slightly uneven, sparsely punctate; scutellum 

 with blackish pubescence, fulvous along the middle, more broadly 

 basally; elytra three-fifths longer than wide, nearly one-half wider 

 than the prothorax, the sides broadly sigmoid; apices broadly 

 rounded; flanks abruptly vertical along an obtuse line; surface 

 coarsely, not densely punctate, the punctures becoming very strongly 

 tuberculiferous basally; line along the suture rather elevated; male 

 with the fifth ventral short, broadly rounded, with a narrow and 

 rather sharply defined median sinus. Length (o 71 ) 21.0 mm.; 

 width across the humeri 9.6 mm. California (locality unrecorded). 



humeralis n. sp. 



Humeri of the elytra not or only very slightly prominent 2 



2 Elytral punctures almost as coarse as in the preceding but less coarsely 

 tuberculate basally; body smaller, narrower, similarly clothed and 

 maculate with black, except that the ante-median fascia is more 

 broken internally, does not extend so far toward the suture and, 

 more especially, is flexed forward at the sides nearly to the humeri, 

 the post-median finely attaining the suture in a V-shaped line, 



