INSECTA MADERENSIA. 221 



fovea within it, which is continuous with the obUque impression, when present, of the prothorax) 

 at the base (immediately within the shoulder) of each. Antewia and legs somewhat darker; 

 except the extreme apices of the club and tarsi, which are more rufescent. 



Apparently one of the rarest of the Madeiran Coleoptera, the only two specimens 

 which have come imder my notice having been captured by myself near Funchal, 

 —one from beneath a stone (in company with Cossijpliodes TFoUastonii) on tlie 

 rocky ledge above the Praya Pormoza, May 8th, 1818 ; and the other, in a sunilar 

 position, on the cliff to the eastward of the town, immediately beyond the Ribeiro 

 de Sao Gon9alo, in January 1819. Although most unquestionably distinct from it, 

 it is very nearly alHed to the T. gramlicollis, Germar, from SicUy,— for a typical 

 example of which I am indebted to Dr. H. Schaum of Berlin. In colour and 

 general aspect the two insects are, at fii'st sight, tolerably sunilar ; nevertheless 

 the Madeii-an may be easily recognised from the SiciHan one by the form of its 

 prothorax, which is somewhat longer and less quadi-ate, and has the sides very 

 much more rounded,— thus causmg its breadth at the extreme hinder margin to be 

 considerably less than is the case in that species. This difference of structure is 

 very perceptible when the respective insects are viewed obliquely. The elytra, 

 also, of the T. Westwoodii are a little narrower throughout, and more parallel at 

 the shoulders, than those of the T. grandicollis. In his generic diagnosis pub- 

 lished, as already stated, in 1834, Germar remarked, concerning the Nubian 

 T. castaneus (from which his oljservations were drawn up), that he was not al:)le to 

 detect any traces of eyes. In the Madeii-an and Sicilian representatives, however, 

 as well as in two others, fi-om Egypt and Algeria, which I have examined, the eyes 

 are certainly apparent. 



Fam. 21. APHODIAD^. 



Genus 78. APHODIUS. 



lUiger, Kdfer Preuss. i. 28 (1798). 



Corpus mediocre, subcylindrico-oblongum, plus minusve Isete coloratura : clypeo punctato, plerumque 

 semihexagono antice integro, sjepius (prajcipue in maribus) tuberculato ; prothorace iutegro {i. e. 

 hand canaliculato) : scutello distincto : alis amplis. Antemm breves (capitis vix longitudine) 

 lamellato-clavatfe 9-articulata?, ad marginem capitis inter otium repositae, articulis prmio et 

 secundo robustis (illo longissimo subcyhndrico, hoc brevi), tertio ad sextum longitudine decrescen- 

 tibus latitudine crescentibus, reliquis clavam magnam triphyllam efficientibus. Labrum trans- 

 versum tenuissimo-membranaceum pilosum, apice in medio ssepius leviter productum et interdum 

 fissura minutissima instructum, sub clypeo (una cum mandibulis) opertum. Mandibula latfe, basi 

 corneBe, dein membranaceo-coriacese, apicem versus tenuissimo-membranaceae obtusse, margme 

 interno ciliato. MaxillcehWoh?^ subcomese, lobis membranaceis ; externa latissimo subovato, apicem 

 versus pilis breviusculis dense obsito; interno minuto piloso bifido. Palpi filiformes; maxillares 

 glabri articulo primo minuto subflexuoso, secundo elongate subclavato, tertio brevi, ultimo elon- 

 gate (secundi longitudine) fusiformi-cylindrico : labiates pilosi, e ligula ad lobos menti auticos 



