HeiT E. Klebs on the Fauna of Amber. 489 



their respective families Herr Klebs finds himself unable to 

 assign about 33 per cent, of the beetles which he ha3 

 examined, in spite of their excellent preservation. Althoui^h, 

 in consequence of the material differences which thej exhibit 

 they can scarcely belong to the families already re[)resented, 

 it is nevertheless quite possible that many a representative of 

 the missing families may be hidden away among them. Herr 

 Klebs cites the genus Lymexilon as an instance of the way 

 in which occasionally solitary forms, hitherto unknown as 

 Tertiary, suddenly turn up in some numbers. He discovered 

 the first amber specimen of Lymexilon in the autumn of 1888 • 

 a year later he had discovered no less than six specimens of 

 the genus, comprising at least three different species. Ly- 

 mexilon is at the present time an extremely rare genus, which 

 lives in rotten oak, and of which only a solitary local species 

 has hitherto been found in Europe. 



Of the Neuroptera, the Phryganidae, of which about five 

 thousand examples have been discovered, are the most nume- 

 rous ; next come the Heraerobiidte, with about fifty specimens, 

 the Panorpidge, with twenty-five, and occasional examples of 

 Semblidte. 



The Orthoptera are represented by nearly two thousand 

 five hundred specimens, the Blattidee being most numerous • 

 next, arranged in order of frequency, come the Lepismldaj 

 Gryllidfe, Poduridse, Locustidfe, Pseudoperlidai, Phasmid^e 

 Forficulidte, and lastly the Mautida^. No specimens of 

 Campodida3 nor Acrldidai have as yet been found, thou<>'h 

 possibly specimens of Niceletia and Camjjodea may have been 

 included among the larvse. 



Among about one thousand specimens of Pseudoneuroptera 

 the Termites are most numerous, numbering about two tliirds 

 of the whole, while Thripsida?, Psocid^, Perlaridte, Epheine- 

 ridas, and Libellulidas are present in about equal numbers, the 

 Psocidai being perhaps somewhat more numerous than the 

 rest. The Embiidse are very rare. 



The Lepidoptera, to the number of about one thousand 

 specimens, are all with one exception Micros, belongino- to 

 the families Tortricidai, Tineidaj, and Psychidaj. The solitary 

 Macrolepidopteron, which is one of Herr Klebs 's recent dis- 

 coveries, is a tolerably large Arctia. 



The lihynchota, with about twelve hundred examples, 

 exhibit representatives of all the subdivisions, with the excep- 

 tion of thePediculina. Aphididae and Homoptera (Cicadidas) 

 are the most numerous ; next come the Hemiptera, and lastly 

 the Coccidffi. ]\l}rioj)oda, both Chilopoda and Cliilognatlia, 

 are represented by about one hundred and fifty specimens. 

 Ann. cfe Mag. N. Hist. Ser. 6. Vol. vi. 35 



