442 Mr. T. V. WoUaston on the Canarian Malacoderms. 



assign it. From the shape, however, of its posteriorly eonti-acted 

 prothorax, which is raised in the centre behind, as well as from its 

 general fades and nearly glabrous surface, I feel pretty confident 

 that it is not an Attains ; and although in its peculiar prothorax it 

 makes a most decided approach to Troglops, it is nevertheless totally 

 removed from that genus (apart from all tarsal considerations, which 

 may or may not detach it therefrom, as the case may be) by its 

 convex, oval (and therefore more 2>osterior1y -widened) head and 

 differently placed eyes, by its shorter antennae (with their very 

 much more abbreviated joints), and by the terminal articulation of 

 its palpi being (as in the three preceding genera) conical and acumi- 

 nated. In its convex, thickened head, indeed, and the construction 

 of its antennae, it agrees perhaps better with Micromimetes than with 

 any other form here enumerated : but I do not believe that it will 

 really enter into that group ; and it is far more likely that its male 

 sex, when discovered, will afford sufficient modifications for the esta- 

 blishment of a separate genus. In the meanwhile I would place 

 it here provisionally, — its very suggestive prothorax and almost gla- 

 brous surface clearly leading us in the direction of Troglops. 



Apart from the features just alluded to, the present insect may be 

 known from all the preceding Attali (with which in many respects 

 it of course agrees) by its rather large, convex, oval, and regularly 

 punctured head ; by its bright-rufous and nearly unsculptured pro- 

 thorax ; and by its doxk-cyaneous elytra, which apparently have no 

 minute under-pile, and merely an exceedingly few and remote addi- 

 tional erect hairs. My unique example was captured in the region 

 of El Monte, in Grand Canary, duiing the spring of 1858. 



Genus Cephalogonia (nov. gen.). (PI. XX. fig. 6.) 



Coiyus fere glabrum, vix (aut saltern minutissime) sculpturatum, Isete 

 pictum : capite rhombifomii, oculia magnis prominentibus ad angiiloa 

 laterales positis; in sexu masculo latiore, oculis maximis, necnon vel 

 antice vel postice subito et profunde excavato, excavatione tubereulo 

 medio instructa : prothorace antice rotundato, postice producto sed per 

 basin truncato : elytris in utroque sexu integris (nee ad apicem appen- 

 dieulatis) : alis in utroque sexu maximis : ahdomine e segmentis 6 com- 

 posite, segmentis corneis sed ad apicem (prsesertim in 4 basalibus) 

 singulatim membranaceo-marginatis. Antennce longiuscula}, filifonues, 

 art. l^o longiusculo clavato sequentibus vix crassiore, 2clo brevissinio, 

 3t'o paulo longiore sed brevi, inde ad penidtimum longitudine vix cres- 

 centibus, ad apices internes oblique truncatis, ultimo oblongo. Labrmn 

 (6 a) coriaceum, transverso-STibquadratum, apice integrum parce cili- 

 atum. Mandihtdce (6 b) triangulares, ad apicem inflexse acutae et ibidem 



