INSECTA MADERENSIA. 4.79 



Marshamian collection, has cited as its synonym the ScaphkUum clubium of 

 Marsliam, — which is a totally different insect (being the Clamhus Enshamenfiis of 

 "VVestwood, and the genus Calyptomerus of Redtenbacher, though in all probability 

 distinct specifically from his C. aljjestris). 



Genus 159. CORYLOPHUS. (Tab. X. fig. 9.) 



(Leacli) Steph. Man. Brit. Col. 99 (1839). 



Corpus minutissimum, rotundato-ovatum, glabrum, convexum : proihorace amplo semicirculari, ad 

 basin elytroriim latitudine, angulis posticis levitcr productis acutis, ad latera et (pr^sertim) 

 antice valde subdeciirvo-producto (caput omnino tegente) : elytris apice leviter truncatis (angulis 

 suturalibus vix rotundatis) : alis (in typicis sat amplis ciliatis, sed in specie Maderensi) obsoletis. 

 Antenna (X. 9 a) protborace paulo longiores, Q-articulata;, graciles, leviter et faciliiis clavatfe, 

 articulis primo et secundo robustis (illo longissimo, boc ])aulo breviore graciliore subclavato), 

 tertio quartoque gracilioribus latitudine pequalibus (illo hoc paulo longiore), quinto leviter cras- 

 siore, sexto minutissimo transverse, reliquis clavam elongatam minus abruptam triarticulatam 

 effieientibus (none majore ovato, ad apicem externum oblique truncate). Latirum (X. 9 A) 

 magnum transverso-subquadi-atum, apice integrum. Mandibulm (X. 9 c) validsE latae, apice In- 

 tegra;, margine interne minutissime crenulato. Maxilla (X. 9 d), palpi (X. 9 rf et 9 e), ligula 

 (X. 9 e) et pedes (X. 9/) fere ut in Sericodero, sed maxillarum lobus paulo brevier et minus 

 rectus, palporum maxillarium articulus secundus crassior et extus setosus, et tibia antica (X. 9/) 

 ad apicem internum, prjesertim in maribus (?), incurvo-productse. 



Corijloplius, which I would regard as the type of the present family, may be 

 known by its more rounded outline, convex and glal^rous upper surface, by its 

 nearly semicircular prothorax, less posteriorly-truncated elytra, and by the curved 

 inner angle (a peculiarity which is especially apparent in the males, ?) of its two 

 front tibia?. Its mandibles moreover are minutely crenulated along their entire 

 length (a structure which is only just indicated in a few of the allied forms) ; and 

 the second articulation of its maxillary palpi is greatly thickened, — particularly at 

 its external apex, where it is also beset with long and robust bristles. Its antennae 

 however afford the most tangil)le distinctive characters, being (like those of 

 Orthopems, with which in proportions moreover they almost exactly coincide) only 

 9-jointed. Cori/lojihns, Orthoperm and Glceosoma, indeed, were it not for the 

 additional articulation possessed l^y the latter, would be very similar in this respect, 

 — since their antennae are not only move g^Hulually clavated than is the case in the 

 other genera, but the club in each of them may be said to commence at the fiftli 

 joint from the extremity (the foui-th one being extremely minute, as in many of 

 the Anisotomidce). As a further proof of the affinity of the three groups in ques- 

 tion, we may appeal to the shape of their anterior tibioe,— which not only have (as 

 already stated) their inner angle incurved (very evidently so in one sex, probably 

 the male), but are themselves, also, slightly arcuated (a singularity which must 

 stm further tend to establish their relation with the members of the following 



