SEBEICORNIA. 



frons; but differs from both in the less transverse thorax, the sides of which are 

 oblique and the hind angles divergent, and also in the subangularly dilated posterior 

 coxal plates. The species is unknown to Dr. Candeze. 



CKEPIDIUS. 



Crepidius, Candeze, Monogr. Elat. ii. p. 80 (1859). 



A genus containing ten described species — eight from South America and two from 

 the island of Guadaloupe. One of the South-American forms extends northwards to 

 Nicaragua. 



1. Crepidius emarginatus. (Tab. XIV. fig. l, $ .) 



Crepidius emarginatus, Cand. Monogr. Elat. ii. p. 84 \ 

 TIab. Nicaragua, Chontales (Belt, E. M. Jansori). — Brazil \ 



I have seen eight specimens of this species from Chontales, all females but one, the 

 latter in mutilated condition, without legs or antennae. 



A female specimen named by Candeze is contained in the Janson collection ; this is 

 from the original locality, Brazil. 



ISCHIODONTUS. 



Ischiodontus, Candeze, Monogr. Elat. ii. p. 90 (May 1859). 

 Tricrepidius, Motschulsky, Bull. Mosc. xxxii. 2, p. 366 (1859). 



This is a genus containing seventy described species, all American *, ranging from 

 the Southern United States to Uruguay. Of this number, no less than sixty-five are 

 from Tropical America, three of these inhabiting the Antilles. Forty-five species are 

 here enumerated from within our limits, twenty-four of which are described as new. 

 Amongst the latter, it may be noted that a considerable number have metallic elytra — 

 one of these, /. resplendens, being, perhaps, the most brilliantly coloured species of the 

 family known as yet from Tropical America ; very few forms of this kind have been 

 described by Candeze. The genus Ischiodontus is an extremely difficult one to deal 

 with, many of the species being very variable in colour and size, and also varying in 

 different localities. The females, too, often differ considerably from the males, and they 

 cannot always be satisfactorily located unless accompanied by their respective partners. 

 In some few species, I. atrocceruleus, I. resplendens, I. marginatus, I. denticomis, and 



^ * /. Jiawaiensis, Cand., from the Sandwich Is., is probably an introduced American species, like Chalcolepi- 

 dius erythroloma. 



