On a new Genus of Clavicorn Beetles. 437 



The tarsi are fairly slender, and the claws scarcely enlarged 

 but of the characteristic form. 



Macropocopris symbioticus, sp. n. 



iEneo-niger, pedibus rufis antennisque flavis ; parvus, breviter 

 ovatus, nitidus, corpore supra toto fortiter punctato, extus brevitor 

 setoso, capite ubique fere sequaliter punctato, clypeo medio leviter 

 einarginato, a fronte carina recta valde elevata separato, froute 

 carina laevi instructo, oculis fortiter granulatis ; pronoto fortiter 

 sat crebre punctato, lateraliter parce setoso, marginc basali supra 

 haud visibili ; elytris profuude striatis, striis fortiter punctatis, 

 interstitiis minutius irregulariter punctatis, lateraliter parce 

 setosis ; pygidio fortiter punctato ; tibia autica calcare arcuato, 

 postica calcare recto, apice bifido, armatia. 



Long. 4-5 mm. ; lat. max. 3 mm. 



Hob. N. Queensland : Cairns (July). 



About fifty specimens, all taken upon wallabies, have been 

 sent by Dr. Illingworth. 



This species differs from all the previously described forms 

 by its smaller size, the much stronger puncturation of its 

 upper surface, the fine setse at the sides of the pronotum and 

 elytra, distinctly emarginate but not notched clypeus, the 

 slight posterior carina in addition to the strong anterior one, 

 coarsely granulated eyes, and the bifid spur to the hind tibia. 

 It is black with a metallic tinge above, the legs and clypeus 

 red (and generally also the front margin of the pronotum), 

 and the antenna? yellow. In some specimens an irregular 

 red spot is visible near the posterior margin of the elytra, and 

 occasionally one appears upon the shoulder also. The two 

 sexes are practically identical in external characters, but the 

 male has the spur of the front tibia more strongly bent than 

 the female. 



L. — A new Genus of Clavicorn Beetles. 

 By Gilbert J. Arrow, F.Z.S., F.E.S. 



(Published by permission of the Trustees of the British Museum.) 



The curious little insect here described has been sent to me 

 for identification by Professor R. Thaxter, of Harvard Uni- 

 versity, as the carrier of a parasitic fungus, Dimeromyces 

 ametrothecalis, Thaxter. The two specimens, which are all 



