234 THE CANADIAN ENTOMOLOGIST. 



up into islands by subsidence. The close similarity between the flora 

 and fauna of Guadalupe and California has several times been cited in 

 support of this view and seems in itself almost conclusive. 



As far as I can learn from the literature at hand, the following fifteen 

 species of Coleoptera are all that were described or reported from the 

 islands up to 1S75 : 



From Santa Cruz — Asaphes tumesceiis, Malthodes laiicoliis, Phobetics 

 coviatus, Ertiobius debiiis, Helops Bachei ; from Santa Catalina — Pristos- 

 ceiis puHctipefinis a.nd P. pedalis ; from San Clemente — Coniontis lata, 

 Eusattus robiistus, Eiilabis grossa., Amara itisularis ; from Santa Bar- 

 bara — Eleodes scabripeiuiis, Cibdelis Bachei and Meloe barbara. 

 Pristoscelis aenescens is said to be "from the islands off Santa Barbara," 

 and it is more than probable that the same reading should be applied to 

 the three preceding species. Nearly if not all the above named species 

 were taken either by C. M. Bache or Dr. J. G. Cooper and given to Dr. 

 Leconte, by whom they were described (i86r-iS66), with the exception 

 ot Amara instilaris, which was described by Dr. Horn in 1875. 



In 1875, Dr. Edward Palmer brought from the Guadalupe Islands 

 the following twenty-three species, which were enumerated by Dr. Horn, 

 Trans. Am. Ent. Soc, V., 1876 : 



Calosoma semilaeve, Lee, Trogosita virescens, Fab. 



II Palmeri, Horn. Saprinus lugens, Er. 



Bembidium striola, Lee. Cardiophorus luridipes, Cand. 



Amara insignis, Dej. Pristoscelis pedalis, Lee. 



11 californica, Dej. Necrobia rufrpes, Fab. 



Plaiynus maculicollis, Dej. Coenonycha socialis, Horn. 



Calathus obscurus, Lee. Atimia dorsalis. Lee. 



Tachycellus nebulosus, Lee. Coelotaxis muricata, Horn. 

 Anisodactylus piceus, Men. m punctata, Horn. 



Anisotarsus flebilis, Lee. Conibius seriatus, Lee. 



Necrophorus nigiita, Mann. Helops Bachei, Lee, var. 

 Dermestes vulpinus. Fab. 



In an appendix to the annual report of the Chief of Engineers for 

 1876, Dr. Leconte gives a list of species taken in So. California the 

 previous year by the expedition for geographical survey under Lieut. 

 Geo. M. Wheeler, among which are the following seventeen species from 

 the island of Santa Cruz ; 



