202 [ February, 



basal impreBsion terminated at either extremity by an elongated line or 

 fovea). Its surface is most minutely and obsoletely punctulated, the 

 third joint of its antennae is conspicuously longer than those which 

 immediately follow, and its sutural stria is very lightly impressed. 



HOLOPAEAMECIJS SIGISTATTJS, n. SJ). 



n. suhellipticus, depressiusculus, rufo-ferrugineus, nitidus, (oc^do fortissime ar- 



ma*o) suhtilissime et parce pubescens, uhique distincte punctulatus ; oculis magnis, 



valde prominentihus ; protlwrace quadrato-cordato fpostice gradatim angustulo, angulis 



posticis rectis), ante hasin in medio lined transversd impresso (parte basalt foved 



utrinque terminatd, necnon carinulii medid brevissimd tenuissimd sub-divisd) ; elytris 



sub-ellipticus, singulis stria suturali recta leviter impressis. 



Long. Corp. lin. | — 1. 



This species and the capitaUis (if, indeed, the two are more than 

 mere sexes of each other) are the largest of the Soloparameci which 

 I have hitherto seen ; and, although their colour is darker or more 

 ferruginous, their outline is a good deal that of the S. Kunzcsi, which 

 has likewise the antennae 9- and 10-articulate. On account of the 

 extraordinary structure, however, of the antennae of the S. capitatus, 

 it is only the present species which need be even contrasted with the 

 Kunzcsi ; and I may therefore add that the signatus is distinct from 

 the latter, not merely in its darker hue and larger bulk, but likewise 

 in its eyes being more prominent, its surface more sharply punctulated, 

 and in its antennae having their third joint more appreciably lengthened, 

 and their club more abrupt. 



§ IT. AntenncB 10-articulatce ; arficulo 3''° sequentihus vix longiore,Q'^° 

 et 10™" clavam maximam valde ahruptam, apice oblique acumi- 

 natam, efficientihus. 



HOLOPAEAMECUS CAPITATUS, 1%. Sp. 



H. prceccdenti similis, et forsan ejus sexus alter. Differt solum (tamen omnino) 

 antennis brevioriMis necnon eai articulis 10 (nee 9) compositis, — articulo 3'io sequen- 

 tibus vicD longiore, 8'"° latiusculo transverso, sed Q"" et lOmo clavam, maximam valde 

 abruptam (illo maxima subrotundaio-quadrato, sed hoc minore et iwrsus apicem oblique 

 aeuminatoj eficientibus. Long. corp. lin. |. 



As already implied, this may possibly prove to be but the male 

 sex of the IT. signatus, — for the analogy of the S. Kunzoei and singu- 

 laris, in which the antennae are both 9- and 10-articulate, would not 

 militate (but quite the reverse) against this supposition. Still, although 

 apparently similar to the signatus in other respects, the structure of 

 its antennae is so different, that it is not easy to believe that the pecu- 

 liarities of the latter are merely sexual ones. Thus, not only are they 



