BIBLIOGRAPHY OF PALAEOZOIC CRUSTACEA. 231 



Stratigraphic position of the Olenellus fauna 



in Xorth America and Europe. 



Am. Jour. Sci., 3d series, vol. 37, 1889, p. 374, continued on p. 392 of 

 the same journal. 



Descriptive notes on new genera and species, 



from the Lower Caaiibrian or Olenellus zone of North 

 America. 



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



A f/nostus desideratum n. sp., A. sp.? Microdiscus helena n. sp. Olenellus 

 ( M< monads ) asaphoides Emmons, 0. ( M.) brogyeri Walcott. Avalonia n. 

 g., A. manuelensis n. sp. Zacanthoides eatoni n. sp. Solenopleura harveyi 

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



The fauna of the Lower Cambrian or Olenellus 



Zone. 



In 10th Rep. U. S. Geol. Sur. Washington, 1890, pp. 515-658, pis. 43-93. 



Isoxysn.g., I. chilhoweanan. sp. Leperditia dematoides Wai. Aristozoe 

 rotundata Wai., A. troyensis Ford. Nortozoe? vermontana Whitf. Proto- 

 carii mamhi Wai. Aynostus desideratus Wai., A. nobilis Ford., .-l.sp.? 

 Microxdicus belli mar ginat us S. & F., M. connexus Wai., M. meeki Ford., 

 M. L>arb-ri Wai., M. lobatus Hall, M. speciosus Ford., M. Helena Wai., M. 

 sp. ? Olenellus thompsoni Hall, 0. gilberti Meek, O. iddings Wai. 



Mesonacis: Olenellus ( Mesonacis) vermontana Hall, 0. (M.) mfckwitzia 

 Schm. and O. (M .) asaphoides Emmons. 



Holmia: Olenellus (Holmia) kjerulfi Linrs., 0. (H.) brogijeri Wai., O. 

 (H.) callavei Lapw. Olenoides fordi Wai., O.marcoui Whitf., O. ellsi n.sp., 

 O. (Dorypyge) disiderata n. sp., 0. quadriceps H. & W. Zacanthoides ?</* 

 Wai ., Z. eatoni Wai. Bathynotus holopyge Hall. Avalonia manuelensis Wai. 

 Conocoryphe trilineata Emmons, C. reticulata n. sp. Ptychoparia adamsi 

 Bill., P.? attleborensis S. & F., P.fitchi Wai., P. miser Bill., P. metisensis 

 n. sp., P. subcoronalaH. & W., P. teucer Bill., P. vulcanus Bill. Crepi- 

 cephalus angusta Wai., C.lillianaWal. Oryctocephalus primus Wai. Ayrau- 

 losstrenuus Bill., also var. nasutus, A. redpathi u. sp. Protypus hitchcocki 

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

 N. harveyi Wai., S./ howleyi Wai., ,9..? a?m Ford., .9..? tumida Wai. 



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 Cambrian rocks of Virginia and 



the Southern Appalachians. 



In Am. Jour. Sci., 3d series, vol. 44, 1892, p. .V2. 



