456 



COLEOPTEUA. 



mentum, which is acuminate in front ; the head and thorax are 

 armed witli large horns in the males ; the first joint of the pos- 

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

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

 the Southern States. It is over two inches long, of a greenish 

 gray color, with black spots scattered irregularl}- over the ely- 

 tra. Dynastes Hercnles 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 wdth the other oral organs beneath the clj-peus ; 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 GoJiathrts, in 

 which the clypeus of 

 the males is generally 

 forked or armed with 

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

 the subgenus, including the princely Scarahceus Goliathns of 

 Linnseus, together with the still more magnificent Goliathus 

 Dmrii of AVestwood, and the G. Cacicns of Gory and Per- 

 cheron." Of Hope's subgenus Mecynorhiiui, the Scarabaeus 

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

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

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

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

 green thorax, and velvet black elytra, with tawny bands and 

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

 haps the largest of all the Coleoptera ; specimens measuring 

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

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

 Goliath beetles in the Museum of the Peabody Academy of 



