Mr. T. V. Wollaston on a new genus of European Coleoptera. 337 



the narrowest), broader than the superior, and shghtly concave at 

 the meeting of the two exposed sides. The inferior eye-plates are 

 wedge-shaped. Ossicles of inferior (?) surface of disk punctate. 

 Length of a side 1^ inch. 



This species is well distinguished from every other unmar- 

 gined form, except rectilineus, M'Coy, by its finely- granulated 

 superior marginals; and from that, to which it approaches 

 nearest, by the punctations on its inferior plates, and by its 

 wedge-shaped inferior oculars. About the size of uncatus. 



Chalk of Gravesend. 



Both specimens are in the Collection of the London Working 

 Men's College, Great Ormond Street. 



XXXIV. — On a new genus of European Coleoptera. 

 By T. Vernon Wollaston, M.A., F.L.S. 



Fam. Melyridae. 



Genus Axtidipnis. 



Co7'jms minutum, ovatum, in utroque sexu (nisi fallor) apterum : 

 capite antice angustato, chjpeo brevi membranaceo ; oculis promi- 

 uentibus. AntenncB longe ante oculos iusertse, filiformes, distincte 

 1 l-articulatse ; articulo I'"" reliquis longiore, paulo robustiore, leviter 

 subclavato ; 2^° brevi ; inde ad decimum longitudine subasqualibus ; 

 \\mo ovato. Labrum transversura, antice truncatum, apicem versus 

 niembrauaceum. MandihulcB triangulares, cornese, basi lataj, apice 

 incurvse acutse, uecnon (in una saltern) fissse. Maxilloi bilobse ; 

 lobis membranaceis, apice obtusis pubescentibus. Palpi maxillares 

 in sexu masculo valde diversi quam in fcemineo : in maribus longissimi 

 (fere articulum antennarum septimum attingentes), articulo 1™° nii- 

 uuto, 2^° huic paulo crassiore elongato, 3''° 4'°que maximis valde 

 incrassatis (illo ovato apice truncate, superne intra apicem externum 

 eroso, hoc ineequali subquadrato, ad apicem ipsum spongioso) ; in 

 fcuminis multo breviores (baud ultra articulum antennarum tertitnn 

 extendentcs), articulo l'"°miuuto, 2'^" 3'^'"que huic paulo crassioribus 

 (hoc illo vix brcviore), 4*° elongato (2'^' .'i'''que conjunctim longitu- 

 dine tequali), leviter crassiore, fusiformi. PaJpi labiales in utroque 

 sexu fusiformes ; articulo 1'"° parvo, 2^*° longiore crassiore, subclavato 

 apice truncate, ultimo huic longitudine suba:quali sed paulo tenuiore, 

 fusiformi basi truncato. Ligula a me vix distincte observata. Pedes 

 longiusculi, graciles, valde cursorii : tibiis ccalcaratis, jwsticis basi 

 leviter subcurvatis : tarsis elongatis filiformibus, articulo 1"'" longi- 

 usculo, auticis in sexu masculo 4-articulatis : unguiculis simplicibus. 



Ab dvTi pro, et lei-Kvov ccena (sc. ccense loco). 



The curious little beetle from which the above generic characters 

 have been conipil'ed was captured by myself, near Lisbon, on the 

 17th of last July, in stcrcore arido humuno (a somewhat remark- 

 able habitat for a Malachian, and one I suppose which it must 



