cxiv FAUNA HAWAIIENSIS 



Proterhinidae, the former usually and the latter always flightless, are also mostly of 

 different species on the different islands, but the species of Cis on the other hand 

 are generally widely distributed throughout the group. 



Many of the species of Cerambycidae, Curculionidae, Carabidae, Cioidae, and 

 Anobiidae exhibit much variability in structure in individuals. Owing to their generally 

 distinctive appearance this leads to no particular difficulty in the separation of the 

 species of Cerambycidae, but in nearly all the other families many of the larger 

 genera are extremely difficult to deal with. Probably no more difficult study in 

 systematic entomology could be found than the working out of the Hawaiian 

 Nitidulidae, Anobiidae, and some other groups. 



The following 80 genera are, so far as is known, endemic : Plagithinysus, 

 Cal/ithmysns and C/ytarhis (Cerambycidae) ; Chaenosternum {^\ Orothreptes (?), 

 Deinocossonus, Nesotocns, Dysomvia, Heteraiiiplms, Oodemas, Anotheoriis (Curculio- 

 nidae) ; Labetis (Cistelidae) ; Apterocis (Cioidae) ; Holcobius, Xyletobius (Anobiidae) ; 

 Eopenthes, Itodacnus, Dacnitiis, Cerat ataxia (Elateridae) ; Apterocyclus (Lucanidae) ; 

 Labrocertis, Ai'gocerus, Eocerus (Dermestidae) ; Brontolaemus (Cucujidae) ; Antilissus 

 (Colydiidae) ; Goniot/iorax, Gonioryctus, Nesapterus, Eunitidula, Orthostohis, Cyrtos- 

 toliis, Apetasiniis, Apetinus, Eupetimts, Nesopeplus, Nesopetinus, Notopephts, Cillaeopepltis 

 (Nitidulidae) ; Lispinodes, Nesoniedon, Lcjtrocoi'ynus, Xanthocoryims, Holocorynus, 

 Liophaena, Eiidicstota, Eusipalia (Staphylinidae) ; Blackbiirnia, Deropristus, Atra- 

 chycnemis, Anchoiejflics, Pseudobroscus, Derobroscus, Brosconymits, Anchonymus, Mauna, 

 Disenockus, Chalcomenus, Barypristus, Baryneus, Co/podisc7is, Prodisenochus, Aptero- 

 mes2is, Mysticomenns, Colpocaccus, Atelothrus, Mesothrisctis, Mecostomus, Mecomemis, 

 Metroniemis, Mecyclothorax, Thriscothorax, Atelothorax, Metrothorax, Gnatholymnaeuni, 

 Nesolyninacu77i, Nesocidiitm, Atelidiiun, Metrocidiiun, Nesornicrops, Macranillus 

 (Carabidae). 



Proterhinus, representing the fam. Proterhinidae with its very numerous species, is 

 only known at present by a single Samoan species other than the Hawaiian series. 



One or two genera, though described from the islands and not at present known 

 elsewhere, are, doubtless, introduced. These are not included in the above list. It 

 may be noted that the greater number of new genera are found in the Carabidae, 

 Nitidulidae, Staphylinidae, Elateridae and Dermestidae, groups classified by Dr D. 

 Sharp. It is therefore quite possible that had the abundant species of the families 

 Curculionidae, Cioidae, Proterhinidae, and Anobiidae, groups worked out by myself, 

 been described and arranged by him, his profound and special knowledge of the 

 Coleoptera would have led to the formation of many genera in these families 

 likewise. 



Chrysomelidae. — This family is represented by the introduced pest of the tobacco 

 and various Solenaceous plants, Epitrix parvula. Probably it has not existed in the 



