230 CALIFORNIA ACADEMY OF SCIENCES. 



Pala3ozoic notes: New genus of Cambrian 



Trilobites, Mesonacls. 



In Am. Jour. Sci., 3d series, vol. 29, 18S5, p. 328, tigs. 



Describes a new genus, Mesonaci>i, and stibstitutes the generic name 

 BaUieJla of Matthew for the subgenus Salter/a, proposed by him (Bull. U. 

 S. Geol. Survey, No. 10, 1884). 



Mesonacis rermontana Hall, also probably Olenellus hoxcelU. 



— Second contribution to the studies on the 



Cambrian fauna of North America. 



In Bull. U. S. Geol. Survey, No. .30, 1886. 



Oryctocephaluf! n. g. I'rotypus n. g. Leperditia troijensis Ford, L.? 

 argenta n . STp . Protocaris marshi Wal. Agnosius interstricus V^hite, A. 

 nohilis Ford. M/crodiscu-s speciosua Ford, M. meeki Ford, M. lobaius Hall., 

 M. })arkeri n. sp. Mesonacis vermontana Hall. Olenellus thompsoni Hall, 

 0. asaphoides Emmons, O. iddingsi Wal., 0. g'dberti Meek. Olenoidea neva- 

 denmM.eek, 0. typkalis n. sp., 0. spinosus Wal., 0.? flagricaudus White, 

 0.1 marcoui Whitf., 0. liMvixn. sp., O. quadriceps Ji. & W., 0. luahsatchen- 

 sis H. & W. Bathynotus holopyga Hall. Ptychoparia kingi Meek, P. 

 adamsi Bill., P. teucer Bill., P. vulccmus Bill., P. miser Bill., P. quadrnns 

 H. & W., P. housensis n. sp., P. piochensis n. sp., P.? prospectensis Wal., 

 P. triUneata Emmons, P. subcorannin H. & W. (Jrepicephalus liliana n. 

 sp., C. angusta n. S'p. Anomocare'l parvum'^aX. Oryctocephahis primus 

 n. sp. Protypns hichcocki Whit., P. senectus Bill. Solenopleura nana 

 Ford. Bathyuriscus hoicelli n. sp., B. productns H. A: W. Asaphiscus 

 ivheeleri Meek. Dopypyge. 



Fauna of the upper Taconic of Emmons, in 



Washington County, New York, with one plate. 



In Am. Jour. Sci., 3d series, vol. 34, 1887, p. 187. 



Leperditia deviatoides n. s^). Aristozoe troyensis Ford, .4. rotundata n. 

 sp. Microdiscus connexus n. sp. Olenoides fordi n. sp. Solenojdeura': 

 tumidan. n'p., S.l nana Ford. Conocoryphe triUneata Emmons. Pty- 

 choparia jitchi n. sp., P,''. (subgenus?) clavuta n. sp. 



Cambrian fossils from Mount Stephens, North 



West Territory of Canada. 



Am. Jour. Sci., 3d series, vol. 36, 1888, p. 161. 



The author classes the following species under Olenoides: 0. nevadensis, 

 O. marcoui, 0. quadricejis, 0. wasuichensis. 



Under the genus Zucanthoides lie arranges Olenoides ty}>!cali'<, O. ■■spino- 

 sus, C. Zcftiv'.s and O . flagricaudatus. 



