330 CALIFORNIA ACADEMY OF SCIENCES. 



OLENOIDES. PARABOLINA. 



Dicellocephalus WAHSATCHENSIS H. & W., 1877; U. S. Geol. Expl. 



40th Par. Pal., vol. 4, p. 241, pi. 1, fig. 35. 



-WAHSATCHENSIS Wai., 1886; Bull. U. S. Geol. Survey No. 30, p. 189, 

 pi. 29, figs. 2, 2 a. Box Elder Canon, Wahsatch Mts., etc., Utah. 



Taconic. 

 Syn., Dicellocephallus? gothicus (H. & W.) Wai., 1886; Bull. U. S. 



Geol. Survey No. 30, p. 189. 



. WAHSATCHENSIS Wai., 1888; Am. Jour. Sci., 3d series, vol. 36, p. 165. 

 OLENUS Dalm., 1826; Palread., p. 220. 



asaphoides. (See Olenellus asaphoides.) 



holopyga. (See Bathynotus holopyga.) 



logani. (See PtycTioparia logani.) 



thompsoni. (See Olenellus thompsoni.) 



UNDULOSTRIATTIS Hall, 1847; Pal. New York, vol. 1, p. 258, pi. 67, figs. 

 3 a, b. Snake Hill, Saratoga, N. Y. Hudson. 



UTAHENSIS H. W., 1873; Rep. 43d Meeting Brit. Assoc. Adv. Sci. 



- UTAHENSIS H. W., 1873; Geol. Mag., vol. 10, p. 523. Utah. The author 



gives the following note: " It shows evidence of a median axis ap- 

 parently corresponding with the so-called straight alimentary canal 

 noticed by Barrande. The matrix is composed of a hydrated 

 silicate of magnesia." 

 vermontana. (See Olenellus vermontana Hall.) 



Crepicephalus (Loganella) QUADRANS H. & "W., 1877; U. S. Geol. Expl. 



40th Par., Palaeont., vol. 4, p. 238, pi. 2, figs. 11-13. 

 Ptychoparia QUADRANS Wai., 1886; Bull. U. S. Geol. Survey, No. 

 30, p. 199, pi. 29, figs. 4, 4 a, b. Above Call's Fort, north of Box 

 Elder Canon and one mile below Argenta, etc., Utah. Taconic. 



QUADRANS Brogg., 1886; Om Alderen af Oleiielluszonea i Nordamerika, 



p. 213. 

 ORYCTOCEPHALUS Wai., 1886; Bull. U. S. Geol. Survey, No. 30, p. 210. 



- PRIMUS Wai., 1886; Bull. U. S. Geol. Survey, No. 30, p. 210, pi. 29, 



figs. 3, 3 a. East of Pioche, Nev. Taconic. 



- PRIMUS Wai., 10th Eep. U. S. Geol. Survey, p. 653, pi. 95, figs. 4, 4 a. 



Olenellus zone. 



Dicellocephalus SESOSTRIS Bill. This species appear- to be near the genus 

 Oryctocephalus, according to Matthews, Diffusion of the Cambrian 

 fauna, p. 11, note. 



PANDERIA Volb.; Mem. Acad. Sci. St. Petersburg, vol. 6, p. 31. 



lllcenus CONRADI Bill., 1859; Canadian Naturalist, vol. 4, p. 372, figs. 



7-9. Falls of La Petite Chaudiere, Township of Hull, Canada. 



For other references, see Illcenus conradi Bill. Trenton. 



PARABOLINA Salt., 1849; Mem. Geol. Survey, decade 2. 



SPINULOSA (Wahl.) Matt., 1891; Trans. Roy. Soc. Canada, vol. 9, p. 



51, pi. 13, figs. 5 a-d. St. John, N. B. 



