ARACHNIDA FROM BAJA CALIFORNIA AND 

 OTHER PARTS OF MEXICO. 



BY NATHAN BANKS. 

 Plates XIII-XVII. 



The Arachnida, collected by Dr. Gustav Eisen and Frank 

 H. Vaslit, under the auspices of the California Academy 

 of Sciences, in Baja California and other parts of Mexico, 

 were sent to the late Dr. Geo. Marx for determination and 

 description. On the occasion of his death they were (with 

 the exception of the Phalangida) sent to the writer. Dr. 

 Marx had performed considerable mechanical work in the 

 separation of the various species, and also some descriptive 

 work. Part of the latter was so fragmentary as to be of no 

 service; the descriptions which were completed, however, 

 and which could be connected with the specimens, are in- 

 corporated in this article nearly as Dr. Marx wrote them, 

 though in many cases there are slight changes or correc- 

 tions. These species, of course, should bear Dr. Marx's 

 name. Several of the species which he had described were 

 not new, and so their descriptions are omitted. Anyone 

 familiar with Dr. Marx's methods of work will not be sur- 

 prised to learn that many of the specimens, when sent to 

 me, bore no locality label whatever. Doubtless he knew 

 where they came from, but left no clew that others might 

 use. Some of the species were numbered, and by examin- 

 ing several of his series of numbers it was possible to find 

 localities and his name for the species. 



Dr. Marx (according to his notes) sent a number of 

 specimens to the eminent French arachnologist, E. Simon. 

 These M. Simon described in a paper entitled " Descrip- 

 tions de quelques Arachnides de Basse-Californie faisant 

 partie des collections du Dr. Geo. Marx," published in Bull. 

 Soc. Zool. d. France, 1895. M. Simon also recorded and 

 described some species from Baja California collected by 



[205] April 29, 1898. 



