Olen. 



492 



Olenus thompsoni, Hall, 1859, 12th An. Rt p. 60, fig. 1 : Pal. 

 N. Y. Ill, p. 525. Barrandia thompsoni^ Hall. 1861, 13th An. 

 Rt. Paradoxides thompsoni^ Emmons, 1860, Man. Geol. Bar- 

 rande, Bull. S. G. d. F. 18, 5, 6 ; Paradoxides macvoGephalus, 

 Em. 1860, Man. Geol. fig. 70; Paradoxides asaphoides^ Em, on 

 preceding page, etc.) Walcott, Bull. No. 30, U. S. G. S. page 

 167, pi. 17, fig. 2, entire specimen from Parker's quarry shales ; 

 fig. 9, very perfect head from mag. lime. Swanton, made per- 

 fect from other specimens. (Figs. 1, 4, omitted.) Plate 22, 

 fig. 1, nearly entire specimen from Parker's quarry. (Plate 23 

 omitted.) — Lower Cambrian (Georgian) formation, Vermont. 



z. a 



Olenellus vermontana. See Mesonacis vermontana. 



z. a 



Olenoides curticei, Walcott, M8S. from the Cambrian of 



Coosa Valley, Alabama. 

 This beautiful figure, 

 drawn in Washington, 

 was generously commun- 

 icated to me, January 24, 

 1889, in advance of the 

 publication of his manu- 

 script description. '' The 

 horizon is notstratigraph- 

 ically determined, but I 

 think it will be found to 

 be Middle Cambrian?'* 

 (W.) 



Olenoides Uagricaudatus (near Dorypyge) White, speeies. 

 See Zacanthoides flagricaudatus, Walcott, in Amer. Jour. 



So. Sep. 1888, p. \^^,— Middle Camlrian, M. C. 



