CETONIIN/E 391 



white fasciae at the sides of the elytra, cause its distinctness in a 

 large series to stand out in bold relief. I also think that lunulatus 

 is sufficiently distinct from viridulus to be regarded as a species and 

 not of lower degree. Schaum rather complicated the subject 

 further by describing mutabilis and variabilis, which names very 

 well express his ideas of the species, for he has thrown into them so 

 many discordant elements that the names are entirely ambiguous. 

 Granting that he intended typical variabilis to be his "variety a," 

 the name must attach permanently to that form, which the Munich 

 catalogue records as a synonym of affinis. As to mutabilis it also 

 included modifications of several distinct taxonomic forms, and I 

 here regard the name as a synonym of viridans Kirby, a species 

 allied to affinis, with which a part of mutabilis is united in the 

 Munich catalogue, and, as the remainder of mu'tabilis comes under 

 viridulus in that list, the synonymy here proposed seems to be all 

 the more likely, viridans being thought allied to viridulus by both 

 Burmeister and Schaum, whereas it is really allied to affinis, as 

 shown by the synonymy published by Horn (Trans. Am. Ent. Soc., 

 1876, p. 197), which is, however, probably taken from the Munich 

 catalogue, where viridans appears as a variety of affinis. 



Valgus Scriba. 



This genus is entirely isolated from any other of the Trichiini by 

 the remotely separated hind coxae, quinquedentate anterior tibiae 

 and greatly elongated basal joint of the hind tarsi. In fact, it stands 

 alone among the Cetoniids and is I think as much entitled to tribal 

 distinction as Cremastocheilus and allied genera. The body is very 

 small in size, peculiarly depressed on the discal parts of the elytra, 

 with a prominent, deeply canaliculate median pronotal ridge in 

 most of the species; the erect hairs of the other Cetoniids are re- 

 placed by large, rounded and more or less decumbent scales. 

 Valgus-like. forms occur over a large part of the globe, particularly 

 in the tropics and they have very recently been divided into a 

 considerable number of genera; our species, however, all belong to 

 Valgus of the hemipterus type, excepting squamiger, which differs 

 radically in sexual characters and also in the proportional abundance 

 of the sexes, although it seems to be normal in general form and 

 vestiture; they are few in number and may be known as follows: 



