CoUoi^tcra of Grenada and St. Vincent (IF. Indies). 517 



exceedingly faint, and the marginal line of the thorax 

 is rather further from the anterior edj^e at the anofles. 

 But the species is in certain respects very variable. A 

 remarkable peculiarity of this genus, which has not 

 previously been noticed, is the extreme variability in size 

 of the division of the eye situated upon the upper part of 

 the head, which in this species diminishes from a large, 

 almost circular disc to a mere narrow vestige, and in a 

 larger sei'ies would probably be found to vanish altogether, 

 ;is it has done in some specimens of AceintJwcerus vicarms, 

 Bates, which I have examined. To show how remarkable 



is this peculiarity I have sketched the heads of a series of 

 four specimens of Acctnthocerus relucens, brought respect- 

 ively from St. Vincent, Mexico, Guatemala and Honduras. 

 As far as our materials show, individuals from the same 

 place are similar, but there is no real segregation into 

 geographical races, nor is the variation in the eyes corre- 

 lated with the variation in other respects to which 

 the species is subject. All the specimens of A. relucens 

 from St. Vincent have the eyes well developed above. 

 These specimens were found in different parts of the 

 island and at ditferent times of year. 



Glcnotus rnfo'ineeus, S{). n. 



Paulo elongatns, rufo-piceus, nitidus, capite strigoso-rugoso, medio 

 leviter elevato, clypeo antice late arcuato, medio vix angulato ; pro- 

 thorace crebre strigoso-punctato, undique marginato, angulis anticis 

 productis, posticis late arcuatis ; scutello parce punctato ; elytris ■ 

 omnino punctato-striatis, postice multo profundius ; pedibus Uete 

 rnfis, tibiis anticis acute serratis, dentibus tribus apicalibus majoribus, 



