BLEPHARIDA.— OXYGONA. 389 



the thorax is the same as in B. punctatissima ; while the pattern of the elytra resembles 

 that of Notozona l4:-maculata, Clark, but the position of the spots in that species is 

 quite different. 



10. Blepharida unicolor. (Tab. xxn. fig. 21.) 



Elongate, parallel, entirely f ulvous ; antennae black, the basal joints fulvous ; thorax finely punctured ; elytra 

 deeply and very regularly punctate-striate, the interstices convex near the apex. 



Length 3 lines. 



Head finely punctured at the sides ; antennae black, the four basal joints fulvous, the fourth joint longer than 

 the third ; thorax not more than twice as broad as long, the sides rounded and narrowed in front, the 

 anterior angles not produced, the surface irregularly and finely punctured ; scutellum rather small ; elytra 

 narrow and nearly parallel, of rather darker colour than the thorax, each elytron with ten closely 

 approached rows of deep and round punctures, the punctures more widely separate anteriorly, the 

 interstices near the apex and at the sides costate. 



Half. Mexico, Jalapa (Edge). A single specimen. 



The thorax in this species is narrowed in front and less transverse than usual, and the 

 ^lytral punctures are more closely placed than in the allied forms with regular punctate- 

 striate elytra, in which the interstices at the same time are not convex. 



11. Blepharida flohri. (Tab. XXII. fig. 20.) 



Piceous or flavous below ; head and thorax dark fulvous, finely punctured ; elytra flavous, closely punctate- 

 striate, covered with large fulvous patches and smaller spots. 

 Length 3 lines. 



Hah. Mexico, Michoacan (Flohr, coll. Jacoby). 



There are no structural differences to be found in this species to separate it from 

 several others of the genus, the nearest ally of which is perhaps B. godmani ; that species 

 is, however, of larger size, and the punctuation is less regularly arranged; in B. flohri 

 the elytra have about nine or ten larger roundish fulvous spots, the intervals being 

 filled up with smaller ones ; but the two specimens kindly sent to me by Mr. Flohr 

 differ in these markings, and are of very irregular shape in one ; the figure will give a 

 better idea of their appearance. 



OXYGONA. 



Oxygona, Chevrolat, in d'Orbigny's Diet. Univ. Hist. Nat. ix. p. 368 (1847). 

 Oxygonus, Clark, Journ. of Ent. ii. p. 390 (Nov. 1865). 



The shape of the thorax, which is transverse, narrow, and angulate at the anterior 

 angles, in connection with the closed anterior coxal cavities, separates Oxygona from the 

 preceding genera. Most of the known species described by Clark inhabit South 

 America ; a single one of wide distribution, and apparently not uncommon, is known 

 from Mexico. 



