36 Rev. A. Matthews's Essay 



M. minuta may be known l)y its longer and broader thorax 

 and elytra, and long slender antennje. 



j\[. Masoni is the smallest of the known species, and easily 

 recognized by its sooty-black legs and antenna, and very short 

 elytra. 



i)/. infuscata is distinguished by its very short and narrow 

 thorax- and elytra, rather long and slender antenna;, and usually 

 f uscescent appearance of all parts of its body. 



^[. (/racilis is larger than either of the foregoing, and differs 

 from all in its robust and shorter anteina?, which are distinctly 

 incrassated towards the apex. 



It is difficult to determine whether an isolated specimen 

 belongs to M. minuta or ^1/. infuscata ; when the two species 

 are placed side by side, their difference is immediately apparent, 

 but owing to the rarity of ^f. viinvta this is not always possible, 

 and consequently, as M . inj'nscata is much the most common of 

 the small species, the greater part of those usually labelled 

 " ininnta" belong in truth to " infuscata." 



SYNONYMIC LIST. 



STAPliYLINID.E. Fowleri, Matth. 



Gymnusina. Kraatzii, Sharp. 

 MYLL^'ENA, Erichsou. glauca, Kye. 



Centroglossa, Matth. elongata, IMatth. 

 dubia, Grav. glauca, Aube. 



conuroides, Matth. 



? valida, Muls. ^^^''^^^a, Kr. 



intermedia, Er. gracilis, Matth. 



attenuata, Matth. forticornis, Kr. 



minuta, Grav. infuscata, Kr. 



mumta. Matth. v. minima. Kr. 



Masoni, Matth. 



brevicornis, Matth. 



gracilicornis, Fairm. ? gracilis, Ilecr, 



? elongata, Kr. ? rubesceus, Key. 



? incisa, Key. ? grandicollis, Kies. 



