from the Galapagos Islands. 35 



Pedonoeces galapagoensis. Ped. ater, nitidus ; antennis pedibusque 

 nigro-piceis ; capite thoraceque confertim punctulatis ; elytris 

 subsulcato-punctatis, interstitiis convexis punctis minutissimis 

 adspersis. — Long. corp. 3 lln.; lat. 1^ lin. 



Var. (d. Elytris sulcato-punctatis, interstitiis convexioribus, quarto 

 et sexto elevatis, subcostatis. 



This species has the general form of the P. costatus, but the 

 thorax is rather longer in proportion ; here the interstices of the 

 striae of the elytra are simply convex, and do not form narrow 

 ridges as in P. costatus. The legs have minute yellow spiny hairs 

 as in that species, and on the under surface of all the femora is a 

 small brush of yellow hairs. 



Pedonoeces costatus. Ped. niger, parum nitidus ; antennis pedibusque 

 rufo-piceis ; corpore oblongo, convexo ; capite crebre punctate ; 

 thorace confertim punctato, punctis longitudinaliter confluentibus ; 

 elytris sulcato-punctatis, interstitiis subcarinatis, alternis elevati- 

 oribus, costatis. — Long. corp. 2f lin. ; lat. 1 lin. 



This species, which is from James' Island, is easily distin- 

 guished from the Ped. galapagoensis by the sharp keel-like ridges 

 formed by the alternate interstices of the striae of the elytra, and 

 by the narrowness of the other interstices : the thorax, moreover, 

 is more strongly and more thickly punctured, and the punctures 

 are oblong, and the greater portion of them are confluent, join- 

 ing each other in such a way as to leave little, narrow, irregularly 

 longitudinal ridges for the interspaces. The thorax is rather 

 broader than long, subquadrate, the sides but slightly rounded, 

 and indistinctly sinuated near the posterior angle, which is nearly 

 a right angle ; the posterior margin is sinuated, presenting a con- 

 vex outline in the middle, and a slightly concave emargination on 

 either side near the angles. The elytra are scarcely broader than 

 the thorax, of an oblong form, but little broader in the middle 

 than at the base, and at the apex they are rounded. The legs, 

 which, like the antennae, are of a pitchy colour, have very small 

 spiny yellowish hairs, and these become more dense and rather 

 longer on the under side of the middle part of the hinder femora. 

 The three terminal joints of the antennae are pitchy-red. The 

 body is distinctly punctured beneath throughout. 



Eurynotus. In two species of Platynofus before me (one of which appears 

 to be the P. gigas) I find the scutellum is scarcely to be seen, whilst in Eu- 

 rynotus it is distinct ; this, combined with the sinuated sides to the thorax of 

 the former, and the thorax being broadest behind in the Eurynoius, will help 

 to distinguish the two genera. I may add, the mesial lobe of the mentum 

 is distinctly emarginated in Platynotus and truncated in Eurynotus : the 

 structure of the tarsi and antennae also differ in these genera. 



D2 



