362 LAMELLICOKNIA. 



Subfam. CETOWIINJE. 



STEPHANUCHA. 



Stephanucha, Burmeister, Handb. der Ent. iii. p. 394 (1842) . 

 Euphoria (pars), Horn, Proc. Am. Phil. Soc. 1879, p. 398. 



A North-American genus, of which three species have been described. The following 

 differs from the generic type in the clypeus having only two spiniform teeth at the 

 apex instead of four ; but in the rounded thorax (entire near the scutellum), the short 

 narrow mesosternal process, and the strongly elevated exterior ridges of the four hinder 

 tibiae, in the middle pair bicuspid, the species accords with Stephanucha. Although 

 the clypeus has only two teeth at the tip, there is a trace of another on each side in the 

 distinct angle formed on the abrupt narrowing of the clypeus towards the apex. 



l. Stephanucha bispinis. 



Euphoria verticali (Horn) affinis ; differt corpore toto fulvo-pubescenti, supra breviter et erecte, subtus dense et 

 longe, villosa; brevis, ovata, nigra vel [immatura (?)] rufescens ; clypeo curvilineariter (juxta apicem 

 abrupte) angustato apiceque dentibus duobus acutis erectis ; capite supra eoncavo, dense rugoso-punctato, 

 vertice tuberculo valido ; tborace late ovato, lateribus cum angulis posticis rotundatis, dense striguloso- 

 punctato et erecte pubescenti, linea dorsali lsevi, postice prope scutellum obtuse truncate- ; elytris costis 

 duabus lsevibus interstitiis sublineatim et sat dense umbilicato-punctatis, quam tborax paullo sparsius 

 pubescentibus ; pygidio ( <3 lato convexo, $ subplano) paullo dense transversim subrugulose punctato, 

 pubescenti. Pedes cum tarsis breves ; tibiae anticse, <J 2 j dentibus gracilibus acutis exstantibus tribus, 

 4 posticas, prsecipue in $ , medio extus grosse dentatis vel bidentatis. Processus sternalis brevis, apice 

 truncato. 



Long. 14 millim. J $ . 



Hab. Mexico, Ventanas in Durango 2000 feet, Ciudad in Durango 8100 feet [Forrer) % 



Evidently closely allied to Euphoria verticalis, Horn, but differing, besides the dense 

 pubescence, in the broader clypeus, each side of which, near the apical teeth, is sub- 

 angulated owing to the suddenly increased narrowing. 



EUPHORIA. 



Euphoria, Burmeister, Handb. der Ent. iii. p. 370 (1842) ; Horn, Proc. Am. Phil. Soc. 1879, p. 397. 



Erirhipis, Burmeister, loc. cit. p. 385. 



Euryomia (pars), Lacordaire, Gen. Col. iii. p. 527. 



A genus difficult to define, though the same may be said of many other genera of 

 Cetoniidae which have hitherto been generally admitted. It comprises nearly all the 

 " Cetonides vraies " of Lacordaire found in America, all of medium or small size, and 

 differing greatly in colours and style of markings and in the shape of the clypeus and 

 other structural features on which systematists rely for generic characters in this 

 difficult family. The clypeus especially presents in different species the various forms 

 characteristic of many distinct genera of the Old World, such as Cetonia, Euryomia, 

 ElapHnis, and others; and this was chiefly, no doubt, the cause of Lacordaire's too 



