52 PHYTOPHAGA. 



In colour this species agrees with C. U-pustulatus, but is much smaller, and the 

 punctures of the elytra are much more deeply impressed. In a specimen contained in the 

 collection of Mr. Baly, and named by Suffrian, there is scarcely any trace of the darker 

 markings which divide the spots on the elytra, while the specimens sent by Mr. Champion 

 are very distinctly marked, but differ in having only six large yellowish spots, the shoulder- 

 spot" and those of the apex being united together. In other respects the insects do not 

 differ. The type has been kindly lent to me for comparison by Dr. Peters. 



32. Cryptocephalus rhombeus. 



Cryptocephalus rhombeus, Suffr. Monogr. vii. p. 44 \ 

 Eab. Mexico 1 ; Guatemala, Zapote, Duefias (Champion), Chinautla (Salvin). 



This is another species allied to the preceding ones, but larger than C. oeellatus, and 

 distinguished by the distinct yellow spots ; from C. guttulatus, which it resembles in 

 that respect, the want of the transverse raised space below the shoulder separates it. 

 The species seems to be a very variable one. A good many specimens were obtained by 

 Mr. Champion ; these, however, differ somewhat from the type, the males being smaller, 

 more deeply punctate-striate, and some of the elytral spots sometimes absent ; in others 

 there are the usual yellowish spots on the thorax, which in the type are wanting ; but 

 as these are only differences in colour, and the rest of the characters agree with 

 Suffrian's species, I have no doubt that all the specimens belong to the same. Through 

 Dr. Peters's kindness I have been enabled to examine the type in the Berlin Museum, 

 which is a female. 



The figure represents a well-marked specimen from Zapote. 



33. Cryptocephalus irazuensis, 



light brown ; a spot on each thigh, two on the thorax, and the margins of the latter light yellow ; elytra very 

 finely punctate-striate, each elytron with seven light-yellow spots (2, 2, 2, 1). 



Length 1| line. 



Head with a few punctures, yellow ; antennae light brown ; thorax impunctate, yellow, the middle occupied by 

 a broad ro-shaped brown mark, the lateral strokes of which extend to the anterior margin ; elytra very 

 finely punctate-striate, the stria? becoming partially very obsolete ; two small yellow spots are placed at 

 the base (one near the scutellum, the other between it and the middle). The other spots are placed 

 exactly as in G. rhombeus. 



Eab. Costa Rica, Yolcan de Irazu (Rogers). 



It will only be necessary to point out the differences between the present species and 

 C. rhombeus, to which it is closely allied. The antenna? in C. irazuensis are entirely brown ; 

 the thorax is distinctly marked with the same-shaped spot as in C. plagiatus ; but the 

 principal distinction lies in the fine or almost obsolete punctuation of the elytra, which 

 in C. rhombeus have also an extra spot at the shoulder, and connected with another one 

 below it, which is entirely absent in the present species ; the legs, moreover, in the latter, 



