CHARLES SCHAEFFER. 251 



3. Thorax near apex with a slightly uneven, transverse carina joining at sides 



the lateral carina, left mandible regularly arcuate 5. 



Thorax near apex with a transverse row of punctures, but without carina, 

 left mandible near apex obliquely bent inside, the outer angle of the 

 bent portion broadly rounded, intermediate intercoxal process between 

 the coxse about one-luilf as wide as the process in its widest part be- 

 hind the coxae 4. 



4. Scutellum and elytra shining, striaj of elytra relatively deeply impressed and 



distinctly punctate serralus Lee. 



Scutellum and elytra finely alutaceous, giving the surface a somewhat dull 

 aspect, elytral strise very feebly impressed and very finely punctate, 



var. peninsiilaris new var. 



5. Intermediate intercoxal process between the coxse slightly contracted and 



almost one-fourth as wide as the process in its widest part behind the 

 coxa? cariuatns n. sp. 



Bratlyciiietiis carinatiiM n. sp. — Form of serratm, but slightly more 

 robust, ferruginous, shining ; thorax near apical margin with a transverse carina, 

 which is on each side slightly bent, joining the lateral carina at sides. Head 

 closely and coarsely punctate, punctuation sparser behind ; left mandible regu- 

 larly arcuate; clypeus elevated, nearly quadrate, at base on each side a tubercu- 

 liform elevation, connected with each other by a slightly arcuate carina, behind 

 this a short indistinct cariniform elevation. Thorax in front refuse, the impres- 

 sions in front and at sides moderately punctate and with sparser, coarser punc- 

 tures intermixed, disk nearly impunctate, except a few punctures on the median 

 line and at sides, near apical margin a slightly bent transverse carina which 

 joins at sides the lateral carina, lateral margin crenate. Scutellum smooth at 

 base, broader than long. Elytral strife finely impressed and not coarsely punc- 

 tate ; intervals flat, apparently impunctate. Underside and legs with moderately 

 long hairs; intermediate intercoxal process slightly contracted between the 

 coxae, and about one-fourth as wide as the process behind the coxae and coarsely 

 punctate at side. Middle and hind tibiae on the outer side obliquely truncate at 

 apex. Length, head porrected, 11-15 mm. 



Huachuca Mts., Arizona; occurs also in Lower California, where 

 it was taken at Santa Rosa and El Taste by Mr. Gustav Beyer. 



The two sexes do not differ very much. "What I consider the 

 male has the clypeus in front of the arcuate ridge more obliquely 

 descending and longer than the females, and has no tuberculiform 

 elevations on each side, but this latter character is not always well 

 pronounced in the females, especially the smaller which have the 

 tubercles generally entirely lost. This is very distinct from our 

 other species by the contracted and narrower intermediate intercoxal 

 process, the regularly arcuate mandible and the frontal carina of 

 thorax. 



The process between the intermediate coxae is narrower in this 

 than in the other species, and is a step towards uniting Brachjcinetiis 

 with Bolboceras. 



TKANS. AM. ENT. SOC. XXXII. AUGUST, 1906. 



