650 REV. H. S. GORHAM ON THE [Dec/20. 



Endomychus. It is not, however, of itself a generic character. Some- 

 what similar organs exist in one species of Encymon (see Notes from 

 Genoa Mus. vol. ii. 1885, p. 519) and in certain genera of 

 Languriides. 



Cyanauges, Gorham. 



To this genus the North-American Endomychus biguttalus of 

 Say and Mycetina limbata, Horn, belong. The latter is the insect 

 alluded to hy me (End. Rec. p. 64) as Endomychus qiiadripunctatus, 

 llliger, and is the E. quadrinotatus of Dejean's Catalogue, p. 464. 

 It is wrongly given in Gemra. and Harold's Cat. as a synonym of 

 E. bigiittatus, from which it is specifically distinct. It occurs, 

 according to Horn, in the State of California; I have seen it from 

 Nevada (Morrison). I am not inclined to lay much stress npon 

 thegeneiicdiffereacehetween these species and Endomychus. If we 

 except the two North-American species mentioned, the other Asiatic 

 specits are very diti'erently coloured, and are nair(jwer and more 

 convex. Perhaps after all some one may discover better points of 

 distinction than tliose I have given for Cyanauges. 



1. Cyanauges gorhami, Lewis, Ent. Mo. Mag. xi. 1874, p. 55. 

 (Plate LIII. fig. 5.) 



Hab. Main Island: Kashiwagi, Nikko, and Fukui. Yezo : 

 Jursai and Sapporo. 



Described from a unique example from Kawatchi. 



Mr. Lewis informs me this insect was found commonly in 1881, 

 in the mountains, on a species of Agaricus allied to A. airocceruleus, 

 in Kiushiu and on the Main Island, in June. In April only the 

 remains of former generations were to be found. 



2. Cyanauges plagiatus, n. sp. (Plate LIII. fig. 6.) 



Niger, nitidus ; elytris singulis plugia lata nee murginem nee suturam 

 attingente, abdomiii.eque (segmento basali excepto) castanets. 

 Long. 5 millim. 



Hab. Kiushiu : Yuyama and Ilitoyoshi. 



Var. Plagia inter rvpta, maculas diias aurantiacas formante. 



Hab. Kiushiu: Higo. 



The avera'iie specimens are a little Lirger than C. gorhami, but 

 the general f. rm and punctuation is similar. Head and thorax 

 shining bbick, the latter a good deal narrower than the elytra at its 

 base, tlie fides narri,w to the front angles, which are prominent and 

 subacute. The elytra are oblong-ovate, distinctly punctured. Most 

 of the examples have the margin narrowly, tlie suture widely for 

 half its length, more narrowl\ behind, and the apex widely black, 

 thus leaving a wide discoidal plagia yellow. Occasionally, as in 

 examples from Hi o, this is divided by the ground-colour of the 

 elytra leaving only two yellow spots, one humeral occupying the 

 cadus, the other a little past the middle, ill-defined, yellow. Tne 

 breast and whole of the basal segment of the abdomen black, the 

 remainder of the abdomen chestnut-yellow. AJany examples were 



