Mr. T. V. Wollaston on the Canarian Malacoderms. 443 



longissime bifida?. Maxittce (6 c) bilobaa, breviuscula?, pubescentes: 

 lobo externa apice subito incurvo: interna brevi. Palpi mazillares 

 elongati, art. l m ° minuto, 2&° elongato, 3*'° brevi transverso, ultimo 

 crassiore (2 d <> paulo longiore) fusiformi apice truncate- : labiates (6 d) 

 breves, art. l m ° brevi sed latiusculo, 2 d ° paulo longiore vix latiore, 

 ultimo crassiore breviter fusiformi apice valde truncate Mentum (6 d) 

 veluti e duplici parte formatum, una apicali magna subquadrata ad 

 latera rotimdata, altera basali (prioris stipite) robustiore transversa 

 angulis anticis paulo producta. Ligula elongata, apice subrotundata 

 pilosa. Pedes longissimi, graciles; tarsis anticis in maribus 4-articu- 

 latis, articiUis tribua basalibus supra ad apicem oblique truncatis necnon 

 subtus productis, l m ° longiusculo, 2 d <> valde elongato (quasi e duobus 

 inter se omnino confluentibus composito), 3tio brevi, ultimo longiusculo 

 clavato. 



Obs. — Generi Troglops hoc genus affinitate proximum est, cum illo forma 

 habituque generali necnon tarsis anticis masculis 4-articulatis congruens, 

 sed caput in maribus estetiam latius, ocidis majoribus, necnon in fronte 

 midto profimdius excavatum, excavatione (vel antice vel postice abrupte 

 sinuato-terminata) tuberculo medio (quasi ocellum ferente) instructa, 

 antennarum articulo tertio brevi (vix longiore quam etiam seciuido), 

 tarsorum anticorum articulo secundo longissimo, abdominisque seg- 

 ments 4 basalibus ad apicem membranaceo-marginatis. 



A ice<j>a\T), caput, et yavia, angulus. 



For the very excellent figure of the type (and details) of this 

 interesting genus I am indebted to Professor Westwood, who has 

 kindly both drawn and dissected it with great care. And although 

 the insect is so large, I feel bound to add that in my own dissections 

 of its very coriaceous mouth I had failed to determine precisely the 

 exact nature of its mentum and ligula ; so that I avail myself with 

 the greater satisfaction of the conclusions arrived at by Professor 

 Westwood, whose delineation of the parts in question afford abun- 

 dant evidence of his usual accuracy. And I may just state that a 

 second representative of the genus, captured by myself in Grand 

 Canary, has been brought to light, but is purposely omitted from the 

 present paper, as being well calculated for admission into a memoir 

 which Professor Westwood is now preparing on Platycephalous 

 Coleoptera. 



In general facies and structure, Cephalogonia has much in common 

 with Troglops, which is its nearest ally. This is particularly apparent 

 in the very significant shape of its (rhombiform) head and (posteriorly 

 produced yet basally truncated) prothorax, as well as in its almost 

 glabrous, highly decorated surface, in the quadriarticulato front feet 

 of its male sex, and in the proportions of its palpi. Nevertheless it 

 differs from that group in the third joint of its antenna) being much 



vol. i. 2 k 



