66 



APPENDIX. 



vexer, or more truncated at their extreme apex ; and its limbs a 

 even longer still. 



In several of the characters above alluded to, it will be seen tha 

 the present Mecynotarsus would appear (judging at least from L 

 Ferte's diagnosis) to agree with the M. bison, of Olivier, from Arabia 

 but that insect is described as entirely testaceous, whereas theCanarian 

 one (which is probably also slenderer) has a black fascia across the 

 middle of its elytra ; and, even had this not been so, it is hardly 

 likely that the same species (and one so manifestly indigenous) would 

 be found in regions which are separated from each other by the 

 whole continent of Africa, and which does not seem to exist in any 

 of the intermediate countries. 



Fam. 



Genus SCYDMJENUS. 



Latreille, Gen. Crust, et Ins. i. 232 (1806). 



Scydmaenus castaneus, n. sp. 



S. angustulus, rufo-castaneus, nitidus, pube grossa subdemissa fulvo 

 cinerea parce vestitus, (oculo fortissime armato) minutissime 

 parcissime punctulatus ; prothorace subcordato (postice valde an- 

 gustato), ad basin parce rugoso-puncato ; elytris ellipticis (antice 

 et praesertim postice acutiusculis) ; antennis breviusculis pedi- 

 busque saturate testaceis. Long. corp. lin. |vix 1. 



Habitat in Gomera et Hierro, sub foliis dejectis a DD. Crotch lectus. 



Several examples of this little Scydmcenus were taken by the 

 Messrs. Crotch in Gomera, by sifting dead leaves above Hermigua ; 

 and they likewise met with two more in Hierro. It is remarkable 

 for its brightly polished but pubescent surface, reddish-chestnut 

 hue, narrowish outline, elliptical elytra, and for its prothorax being 

 cordiform, or greatly attenuated behind, and roughly punctured at 

 the base. Some of the specimens are altogether a little smaller and 

 narrower than the remainder; but after overhauling them very 

 closely beneath the microscope, I cannot discover a single character 

 either of outline or structure which will enable me to separate them 

 even as a permanent variety. 



Fam. PSELAPHIM2. 



Genus PSELAPHUS. 

 Herbst, Kaf. iv. 100 (1792). 



