330 CALIFORNIA ACADEMY OF SCIENCES. 



OLENOIDES. PAKABOLINA. 



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



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

 WAii.SATCHEN.sis Wal., 1886; Bull. U. S. Geol. Survey No. 30, p. 189, 



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



Taconic. 

 Syn., Dicellocephallus? gothicus (H. k W.) Wul., 1886; Bull. U. S. 



Geol. Survey No. 30, p. 189. 



WAiiSATCHEXsi.s Wal., 1888; Am. Jour. Sci., 3(1 series, vol. 36, p. 165. 



Olenus Dalin., 1826; Palaead., p. 220. 



• asaphoides. (See Olentllus asaphoidc s .) 



• holopyga. (See Bathynotus holqpyga.) 



• logani. (See Piychopnria logani.) 



thompsoni. (See Olenellus thompsoni.) 



UNDULOSTRIAT0S Hall, 1847; Pal. New York, vol. 1, p. 258, pi. 67, figs. 



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



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



UTAiiEXSis 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) quadran.s H. & W., 1877; U. S. Geol. Expl. 



40th Par., PaliT?ont., vol. 4, p. 238, pi. 2, figs. 11-13. 

 Pti/choparia quauraxs Wal., 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. 

 quadraxs Briigg., 1886; Om Alderen af Olenelluszoneii i Nordamerika, 



p. 213. 

 Oryctocephalus Wal., 1886; Bull. U. S. Geol. Survey, No. 30, p. 210. 

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



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

 PRIMUS Wal., 10th Rep. U. S. Geol. Survej^ p. 653, pi. 95, figs. 4, 4 a. 



Olenellus zone. 

 Dicellocephcdus sesostris Bill. This species appear- to be near the geuus 



Oryctocephalus, according to Matthews, Diffusion of the Cambrian 



fauna, p. 11, note. 

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



Illamus 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 Illcenwi conradi Bill. Trenton. 

 Parabolixa 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. 



