8d6 Rev. T. A. Marshall on new Genera 



faintly punctured ; the less glossy appearance is due to a very 

 minute aciculation, visible under a strong lens everywhere be- 

 tween the punctures, and especially on the thorax. Elytra each 

 with eight smooth, subelevated, somewhat indistinct costse (ex- 

 clusive of the sutural and lateral margins) ; the first and eighth, 

 the second and seventh, and the third and sixth united at their 

 apices. Interstices moderately punctured, the punctures of the 

 second and following strise geminated. Each elytron with two 

 cyaneous spots, irregularly rounded, — the anterior covering the 

 humeral angle, and projected for a short space into the deflexed 

 lateral margin, reaching along the anterior margin nearly to the 

 scutellum, and terminating posteriorly at one-fourth of the 

 length of the elytron : its hinder interior angle truncated. The 

 posterior spot is situated just behind the middle, equal in size 

 to the anterior, slightly infringing upon the deflexed lateral 

 margin, not touching the suture, and terminating posteriorly at 

 five-sixths of the length of the elytron. Tarsi testaceous. The 

 other characters are common to this and the two preceding 

 species. 



Hab. South America ? From Thomson's collection. 



Metaxyonycha humilis, sp. ined. 



M. testacea, parallela, cylindrica ; antennis testaceis ; capita basi et 

 post oculos infuscato ; elytris thorace parum latioribus, hoc late- 

 ribus muticis, illis subseriatim punctatis, apicem versus costatis ; 

 utroque maculis binis baseos et fascia pone medium, postice emar- 

 ginata, extus apicem versus producta, nigris. 



Long. lin. 3|, lat. hum. 1^ lin. 



Head smooth, shining, with a large punctured fovea between 

 the eyes, and three impressed lines, forming a bisected triangle, 

 of which the apex enters the fovea. Eyes large, black, and pro- 

 minent. Mandibles tipped with black. Occiput dark brown, 

 black behind the eyes ; the dark tint extending forwards in the 

 middle indeterminately. Thorax convex, subcylindrical, mode- 

 rately rounded at the edentate sides, nearly as broad as the elytra, 

 punctured, and, with the scutellum, reddish testaceous. Elytra 

 paler testaceous, thickly but finely punctured, the punctures 

 indistinctly arranged in strise; the suture costate, and several 

 smooth costse visible near the apex. Each elytron with two ob- 

 long black basal spots, the outer one lunate, and including the 

 humeral callus. An irregular black transverse fascia just be- 

 hind the middle, touching the sutural margin, but not reaching 

 the deflexed outer margin of the elytron ; emarginate behind, 

 and with its outer angle narrowly produced for a short dis- 

 tance towards the apex. Under surface and legs entirely testa- 



