APPENDIX. 



taceous, for its elytra and abdomen being either brownish-testaceous 

 or else more or less darkened the state " /3. obscuripennis, 

 denned above, having its elytra nearly black, and for its antennae 

 being not only rather elongated (with the subapical joints monili- 

 form, and the apical one oblong) but also (like the legs) of a pale 

 testaceous throughout. Its four anterior prothoracic impressions are 

 placed very close to the front margin ; and its three elytra! lines 

 but sparingly and obsoletely punctured. 



The M.filiformis is a species which is so well denned by its narrow 

 outline, the construction of its pallid antenna, its small eyes, and its 

 rufo-testaceous head and prothorax, that I cannot think that the 

 variation in the mere colour of its elytra is of much significance, 

 particularly since some of the examples are, in that respect, partially 

 intermediate. As a whole, however, judging from the series now 

 before me, it would appear that the Gomeran individuals (and per- 

 Jiajps also those from the very lofty altitudes of Teneriffe) have their 

 elytra rufo-testaceous and immaculate ; whilst those (the state " /3 " 

 of my diagnosis) which were captured by the Messrs. Crotch in the 

 somewhat less elevated districts of the latter island, namely in the 

 Pinal above Ycod el Alto, have their elytra more or less darkened 

 and sometimes nearly black. 



Mycetoporus Johnsoni. 



M. rufo-testaceus, nitidus ; pectore abdomineque (ano plus minus 

 ferrugineo excepto) obscurioribus ; oculis parvis ; prothoracis 

 punctis 4 anticis a margine valde remotis ; elytris convexis, bre- 

 vibus, punctorum seriebus tribus fere obsoletis ; antennis pallidi- 

 oribus. Long. corp. lin. 1-vix 1J. 



Mycetoporus pronus, var. /3., WolL, Ins. Mad. 573 (1854). 

 -, Id., Cat. Mad. Col. 186 (1857). 



Johnsoni, Id., Ann. Nat. Hist. vi. 52 (1860). 



Habitat Maderam, in sylvaticis editioribus, passim. 



The present Mycetoporus, which occurs sparingly in the sylvan 

 districts of Madeira proper, I had regarded formerly as a depau- 

 perated state of the M. pronus ; but a subsequent and more critical 

 examination of it has induced me to describe it as distinct. It is 

 rather smaller than the pronus, with the eyes more minute, and with 

 the four punctures a little further removed from the anterior edge of 

 the prothorax ; the elytra are . shorter and more convex, with their 

 three rows of longitudinal punctures almost obsolete; and the antennae 

 are somewhat paler, and not quite so incrassated towards their apex. 



