OF PHrTOPHA.QOUS COLEOPTEBA. 



343' 



rest. Middle third of lateral margin reflexed. Q-en3ral surface 

 of the elytra coarsely aud irregularly rugose-paactate, the rugo- 

 sities strigose. Whea viewed iu certain lights, the body presents 

 a velvety appearance. 



Chlamys memnonia, Lac. (the type of which, formerly belonging 

 to M. Pilate, is now in my possession), has a distinct second sen- 

 tellum, and belongs to the present genus. Ch. jnoestifica, Lac, must 

 for the same reason be placed in this genus. 



G-enus Chlamys, Knock, 

 Chlamys velutina, n. sp. Anguste subquadrato-oblonga, rufo- 

 picea, opaca, antennis extrorsum nigris ; thorace fortiter siibremote 

 punctato, medio gibboso, gibbere sat elevate, antiee declivi, elevato- 

 reticulato, apiee longitudinaliter sulcato, sulco postice utrinque costa 

 irregular! elevata marginato — nigro-piceo, gibbere antiee et apice 

 rufo-piceo ; elytris rufo-piceis, nigro-piceo (basi excepta) late margi- 

 natis, rude rugosis, utrinque tuberculis duobus ante apieem oblique 

 positis costisque elevatis longitudinalibus tribus, harum prima a basi 

 inter callum humerale et suturam ad declivitatem apicalem extensa, 

 sinuata, basi tuberculo compresso acuto instructa, ad apieem magis 

 elevata et in spinam compressam retrorsum spectante abrupte desi- 

 nente, secunda minus elevata, a basi prope suturam ad paullo infra 

 medium extensa, basi et medio tuberculata, apiee costa brevi trans- 

 versa valde elevata ad cristam primam connexa, tertia brevi, inter 

 callum humerale et costam primam posita, curvata, ad illam costam 

 paullo ante medium connexa, instructis. Long. 2 lin. 

 Hob. Amazons. Collected by Mr. Bates. 

 Head opaque, impressed on the vertex with a fine longitudinal 

 groove ; eyes deeply notched ; jaws pitchy black ; antennae shorter 

 than the thorax, the seven outer joints compressed, the five upper 

 ones black. Thorax rugose, deeply punctured on the sides, the 

 disk strongly gibbose, the anterior surface of the gibbosity oblique, 

 its apex longitudinally sulcate ; covered (the front excepted) with 

 irregular raised reticulations which form an irregular longitudinal 

 ridge on either side of the hinder portion of the apical groove. 

 Elytra scarcely broader than the thorax, oblong, convex, rugose, 

 deeply punctured, the punctures on the sides arranged in longi- 

 tudinal rows ; each elytron with three irregularly serrulate longi- 

 tudinal ridges — one commencing at the base, halfway between the 

 suture and the humeral callus, slightly flexuose, and extending 

 downwards as far as the deflexed apical portion of the elytron, its 

 base armed with a compressed acute tooth, bolow the middle the 

 ridge gradually increases in height, its apex terminating abruptly 



LI>'X. JOUEN. — ZOOLOaT, VOL. XIY. 25 



