100 General Notes. 



to strong ochraceous and has the tail deeply fringed with white at all 

 seasons. 



True Sciurus douglasi, the nearest relative of 8. orarius, was perfectly 

 well known to the distinguished authors of the Quadrupeds of North 

 America, having been, in fact, first described by Bachman himself, but 

 they make no mention of their Sciurus mollipilosus being at all like it, 

 comparing the latter with the eastern Chickaree, 8. hudsonicus. 



At the time I wrote my description it seemed to me so perfectly evi 

 dent that 8. mollipilosus was a member of the hudsonicus and not the 

 douglasi group that I did not mention that species though I carefully 

 compared specimens of the new form with the descriptions and the plate. 

 Going over the ground again, even more carefully, I am still emphati 

 cally of the same opinion. 



As to the origin of the specimens (there were said to be specimens) 

 upon which the name Sciurus mollipilosus was based the only ground 

 Dr. Allen gives for using the name to supplant my 8. orarius a word is 

 sufficient. When Audubon and Bachman knew the exact source of their 

 material they always stated it in detail, and such, in those days, little- 

 known and indefinate regions as "Northern parts of California" and 

 "Northern part of California near the Pacific Ocean" means merely 

 northwest coast of North America, and is analogous to "that part of 

 California that adjoins Mexico" of the same authors. 



To sum up: In my opinion Sciurus mollipilosus Audubon and Bach 

 man may have been based on the animal now called Sciurus hudsonicus 

 vancouverensis Allen, with which the plate and descriptions agree very 

 closely, or possibly it may have been Sciurus hudsonicus streatori, but 

 whatever it was, it was a member of the hudsonicus group and has noth 

 ing whatever to do with the Redwood Chickaree which belongs to the 

 douglasi group, and should be known as Sciurus ( Tamiasciurus) douglasi 

 orarius (Bangs). Outram Bangs. 



A new name for the Dinosaur Haplocanthus Hatcher. 



Dr. C. R. Eastman has very courteously called my attention to the fact 

 that the generic name Haplocanthus recently proposed by me for a new 

 Sauropod dinosaur from the Jurassic deposits near Canyon City, Colorado,* 

 is essentially preoccupied, Agassiz having employed the name Haplacan- 

 thus for a genus of fishes. I would therefore propose the name Haplocan- 

 thosaurus for this genus of dinosaurs with simple median spines on the 

 anterior dorsals and posterior cervicles. J. B. Hatcher. 



*Proc. Biol. Soc., Washington, XVI, pp. 1-2, February 21, 1903. 



