44 PHYTOPHAGA. 



7. Cryptocephalus circumflexus. 



Cryptocephalus circumfleoeus, Suffr. Monogr. rii. p. 4. 

 Hal. Mexico. 



In coloration almost identical with the preceding species, but differiDg by the shape 

 of the thorax and its different markings, and by the numerous transverse raised spaces 

 (called fields by Suffrian) of its elytra. The insect is also smaller, the size being 

 2f-3 lines. 



8. Cryptocephalus nigrovittatus. (Tab. III. fig. 16.) 



Flavous, shining ; terminal joints of the antennas, the posterior margin of the thorax, and two interrupted 

 longitudinal vittse of the elytra black, the latter snbgeminate punetate-striate. 



Length 1-1 1 line. 



Head flat, impunctate ; antennas longer than half the body in the male, shorter in the female, their basal five 

 joints flavons, the rest black, slender ; thorax rather long in the male, distinctly narrowed anteriorly, 

 with its sides scarcely rounded but deeply deflexed, posterior angles pointed, surface very shining light 

 fulvous or flavous, the margins lighter, disk totally impunctate, narrowly margined with black poste- 

 riorly ; scutellum flavous, margined with black ; elytra deeply punetate-striate, each elytron with nine 

 rows of punctures placed as follows— the first sutural row abbreviated a little behind the middle, the second 

 one slightly curved and united at the apex with the submarginal row, the space between these occupied 

 by two pairs of striee, the inner one of which is narrowed at the middle, while the outer pair separates 

 or widens gradually towards the base of the elytra, the seventh row is only indicated by a few punctures 

 below the shoulder ; all these stri® are very distinctly visible to their ends, but the inner pairs do not 

 extend quite to the apex ; the interstices are distinctly costiform near the lateral margin, and the space 

 between the first pair of striae is occupied by a black longitudinal band from the base to below the 

 middle, while another band occupies the space of the following pair, but is sometimes interrupted and 

 forms three black spots ; underside and the legs entirely flavous ; presternum deeply bilobed ; the female 

 insect is larger and the thorax more transverse. 



Hah. Guatemala, Zapote (Champion). 



The geminate striate elytra and the markings of the latter would show this species 

 to belong to the seventh group of Suffrian, while its small size and other characters 

 would separate it from any other species belonging to that group. 



9. Cryptocephalus quadrivittatus. (Tab. IV. fig. 1.) 



Broadly cylindrical, flavous ; last six joints of the antennae, the tibia?, five spots at the thorax, sutural and 

 lateral margins of the elytra, and four longitudinal vittse of the latter (the outer one short) black. 



Length 2 lines. 



Head with a shallow depression between the eyes, and some more or less numerous punctures ; clypeus 

 subquadrate, distinctly punctured and separated from the head ; antennas extending to one third the 

 length of the elytra, the joints, with the exception of the second one, of nearly equal length, the first 

 five joints fulvous, the rest black ; thorax nearly three times as broad as long, cylindrical when seen 

 from above, the sides greatly deflexed, anterior angles acute, pointed, and directed backwards, the lateral 

 margin evenly rounded, surface entirely impunctate, fulvous, shining, the posterior margin narrowly 

 black ; five black spots, of which the middle one is more elongate, are placed across the disk at regular 

 intervals ; scutellum black, with a deep basal groove ; elytra broadly cylindrical, only about twice as long 

 as the thorax, rather finely but distinctly punetate-striate from a little below the base to the apex, the 

 six and seventh rows abbreviated below the shoulder, the latter and the commencement of the following 

 row much deeper impressed than the others, the interstices flat and impunctate ; the colour is of a lighter 



