BIBLIOGRAPHY OF PAL.EOZOIC CRUSTACEA. 231 



Stratigraphic position of the Olenellus fauna 



in North America and Europe. 



Am. Jour. Sci., Sd series, vol. 37, 1889, i). .S74, coutiimed on p. 392 of 

 the same journal. 



Descriptive notes on new genera and species, 



from the Lower Cambrian or Olenellus zone of North 

 America. 



In Proc. U. S. Natl. Mns., vol. 12, 1889, p. .34. 



A[/7iosius desiderattiH n. sp., A. sp.? Microdiscun hclena n. sp. Olenellus 

 ( Mesonacis ) asaphoides Emmons, <). ( M.) brotjge)-i Walcott. Avalonia n. 

 g., A. mamtelensis n. sp. Zacanlhoides eatonl n. sp. Solnnopleura harvrt/! 

 u. sp., S. howleyi n. sp. 



Tlie fauna of the Lower Cambrian or Olenellus 



Zone. 



In lOth Kep. U. S. Geol. Sur. Washington, 1890, pp. 515-658, pis. 43-98. 



Isoxys n. g., /. rhilhovjeanan. syi. Leperditia dematoides Wal. Arlstozoc 

 rotundata 'Will., A. iroyensis Fold. Nortozoe? vermontana Whitf. Proto- 

 caris mars/ii Wal. Agnostus desideratum Wal., A. nohilis Ford., A. sp.? 

 Microsdlcus bellitnarginatus S. & F., M. connexus Wal., M. meeki Ford., 

 M. parkeri Wal., M. lohatus Hall, M. sjnciosus Ford., M. helena Wal., M. 

 sp. ? Olenellus thompsoni Hall, 0. gilherti Meek, 0. Iddincjs Wal. 



Mesouacis: Olenellus ( Mesonacis ) vermontana Hall, 0. ( M.) mickicihUi 

 Schm. and 0. ( M.) asctphoides Emmons. 



Holmia: Olenellus (Holmia) hjerulfi Linrs., O. (H.) hrugiieri Wal., <>. 

 (H.) caUaveiJ-iaiyw. Olenoides fordi Wal., 0.marcoui\^]i\ii., O. ellsi n.sii., 

 O. (Dorypyge) disiderata u. sp., O. quadricepsYi. & W. Zaeanthoides Icevis 

 Wal., Z. eatoniV^td. Bathynolusholopyf/e HaW. Avalonia manuele7isis Wal. 

 (Jonocoryphe triUneata Emmons, (L retieulata n. sp. P/ychoparia adamsi 

 Bill., P.UUilehorensls S. & F., P.fitchi Wal., P. miser Bill., P. metisensis 

 n. sp., P. suhcoronata H. & W., P. ieueer Bill., P. vulcanus Bill. Crejii- 

 cephalus angusta Wal., C.lilliana Wal. Oryctocephalus pri^nus Wal. A gran- 

 los strennus Bill., also var. nasutus, A . redpathi n. sp. Protypus hitchcocki 

 Whitf., P. senectus Bill., P. clavatus Wal. Solenopleura bombifrons Matt., 

 S. harveyi Wal., S.? howleyi Wal., S.'f nana Ford., S.? tumida Wal. 



In this contribution to the Olenellus zone Walcott gives a bibliographic 

 reference to the articles on the subject, also a historical review, with 

 geologic description of the Lower Cambrian or Olenellus zone as known 

 to the geologist, etc. 



Notes on the Cambi'ian rocks of Virginia and 



the Southern Appalachians. 



In Am. Jour. Sci., 3d series, vol. 44, 1692, p. .")2. 



