CHAP. VI.] CEYLON INSECTS. 271 



with the tropical forms of the gigantic Copridcc, Buprestidce, 

 and Cerambycidw, and with the Elatei*idce, Lampyridce, Tene- 

 brionidce, Helopidce, Meloidce, Curculionidce, Prionidce,Ceram- 

 bycidce, Lamiidce, and Endomychidce. 



" The Copridce, Dynastidce, Melolontkidce, Cetoniadce, and 

 Passalidce are well represented on the plains and on the coast, 

 and the species are mostly of a tropical character. 



" The Hydrophilidce have a more northern aspect, as is gene- 

 rally the case with aquatic species. 



" The order Stl^psiptera is here considered as belonging to 

 the Mordellidce, and is represented by the genus Myrmecolax, 

 which is peculiar, as yet, to Ceylon. 



" In the Curculionidce the single species of Apion will recall 

 to mind the great abundance of that genus in North Europe. 



" The Prionid-ce and the two following families have been in- 

 vestigated by Mr. Pascoe, and the Hispidce, with the five fol- 

 lowing families, by Mr. Baly; these two gentlemen are well 

 acquainted with the above tribes of beetles, and kindly supplied 

 me with the names of the Ceylon species. 



Order ORTHOPTERA. 



" These insects in Ceylon have mostly a tropical aspect. The 

 Physapoda, which will probably be soon incorporated with 

 them, are likely to be numerous, though only one species has 

 as yet been noticed. 



Order NEUROPTERA. 



" The list here given is chiefly taken from the catalogue pub- 

 lished by Dr. Hagen, and containing descriptions of the species 

 named by him or by M. Nietner. They were found in the most 

 elevated parts of the island, near Eangbodde, and Dr. Hagen 

 informs me that not less than 500 species have been noticed in 

 Ceylon, but that they are not yet recorded, with the exception 

 of the species here enumerated. It has been remarked that 

 the Trichoptera and other aquatic Neuroptera are less local than 

 the land species, owing to the more equable temperature of the 

 habitation of their larvae, and on account of their being often 

 conveyed along the whole length of rivers. The species of 

 Psocus in the list are far more numerous than those yet ob- 

 served in any other country, with the exception of Europe. 



