456 



COLEOPTERA. 



mentum, Avhich Is acuminate in front ; the head and tiiorax are 

 armed with large horns in the males ; the fh'st joint of the pos- 

 terior tarsi is not elevated, and there are no stridulating or- 

 gans. Our only species is Dynastes Tltyrus Linn., found in 

 the Southern States. It is over two inches long, of a gi-eenish 

 gray color, with black spots scattered irregularly over the ely- 

 tra. Dynastes Hercules Linn., one of the giants of the family, 

 is about six inches long. 



The genus Cetonia and its allies are flower beetles ; their 

 mandibles are feebly developed and in part membranous and 

 concealed with the other oral organs beneath the clypeus ; and 

 in flying they " do not raise or expand the elytra, as most Cole- 

 optera do, but pass the wings from the side, under the elytra, 



which do not at all 

 embrace the sides of 

 the body." (Leconte.) 

 The immense Go- 

 liath beetles of the 

 western coast of 

 Africa belong to the 

 genus GoUathus, in 

 /^ \ a which the clj-peus of 



" '' the males is generallj^ 



^'^- "^- forked or armed with 



horns. Dr. Harris has proposed the name of Hegemon "for 

 the subgenus, including the princelj^ Scarabceus GoJiathus of 

 Linnoeus, together with the still more magnificent GoUathus 

 Drurii of Westw^ood, and the G. Cacicus of Gory and Per- 

 -cheron." Of Hope's subgenus Mecynorlnna, the Scarabaeus 

 Polyphemus of Fabricius is the type ; it is vehet green above, 

 with a pale .buff head and markings, and is two and a half 

 inches long, exclusive of tlie horns. Dr. Harris has also 

 ideseribed as new to science M. Savagii which has a velvet 

 green thorax, and velvet black el^'tra, with tawny bands and 

 spots ; it is about two inches long. The G. GoUathus is per- 

 haps the largest of all the Coleoptera ; specimens measuring 

 nearly four inches. Dr. G. A. Perkins of Salem, Mass., who 

 collected a large part of the fine series of specimens of these 

 Goliath beetles in the Museum of the Peabody Academy of 



