238 INSECTA MADERENSIA. 



T. elliptical, reddish-brown, and densely clothed with a decumbent cinereous pile. Head and pro- 

 thorax regularly punctulated : the latter broad behind, with the posterior angles exceedingly pro- 

 duced and acute, and with the basal margin lobed in the centre. Elytra very finely striated 

 (the strife being most obsoletely punctured) ; and with the interstices rather thickly and distinctly 

 jnuictulated, — the punctures being larger and more oblong than those of the prothorax. An- 

 tenrut fcrniginous. Leys testaceous. 



Readily distinguished from the common European T. clemiestoides by its smaller 

 and narrower body, by the almost imperceptibly punctate striae, and very distinctly 

 punctulated iaterstices, of its ehi:ra, by the absence of the two raised ridges which 

 arc so conspicuous on the forehead of that insect, and by the less abrupt and 

 differently formed club of its much slenderer antennae. It is intermediate between 

 the T. clemiestoides, Linn., and the T. 2ii(siUtis, Heer; and I should have been 

 inclined to have referred it to the T. elatero'ules of the latter author, had not that 

 species been described as " pronoto longiore, anterius multo angustiore [quam in 

 T. dermestokIes~\, basi in medio impresso; elytris striatis, striis ad suturam valde 

 obsoletis," — none of wliicli characters appertain to the Madeu-an representative of 

 tlie group ; wliich has its elytral striae unquestionaljly punctate, A\'hUst the shape 

 of its prothorax differs in no respect from that of the T. dermestoides. Its size 

 moreover exceeds by the third of a line that given by Professor Heer for the 

 T. elaterokles, — of which I have not been able to procure a specimen for com- 

 parison ; and with which I am consequently unable, with such points of apparent 

 discrepancy, to identify it. It is exceedingly rare, the only example which I have 

 seen ha\-ing been captured by myself, in the garden of the Eev. R. T. Lowe, at the 

 Levada, in company ^vith Ephistemus dimidiatiis and Cis fuscijpes, amongst lichen 

 and fungi on the rotten stump of an old peach-tree. 



Fam. 25. ELATERID^. 



Genus 84. COPTOSTETHUS, Woll (Tau. IV. fig. 8.) 



Corpus pamim, elongato-subovatum, undique dense villosum : prothorace magno, elytris arete appli- 

 cato, angulis posticis valde acumiuato-productis ; jirosterno antice producto et postice in spinam 

 acutam attenuato (spina in mesosternum recepta) : alls obsoletis. AntenruB longissimse (capite 

 prothoraceque multo longiorcs) subfiliformes, basin versus subserratae, ad prosterni superficiem 

 inter otium arctc reposita^, articulo primo robusto, secundo brevi subgloboso, tcrtio majore 

 (sed hand quarti longitudine), reliquis latitudine vix decresceutibus longitudine \vs. crescentibus. 

 Labrum subsemicirculare pilosum. Mandihula validce aroiatse angustae acutissima?, ad basin 

 lata; cxtus pilosa;, margine intcrno basi coriaceo leviter pubescenti necnon apicem versus dentc 

 \alido instructo. Maxilla (IV. 8 h) biloba; memhranacere : lobo externo lato, apice valde pubes- 

 centi : interno breviore, minus pubescenti. Palpi subfiliformes ; maxillares articulo primo parvo, 

 secundo majore crassiore, tertio breviusculo (secundo paulo graciliore), ultimo (secundo vix lon- 

 giore sed crassiore) subfusiformi apice oblique truncato : labiales (IV. 8 c) e scapis ligulse connatis 



