14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



Species formerly referred to Bathyuriscus: 



B. anax= Clavaspidella, etc. B. lodetisis = Glossoplcura 



B. bantius = Atwria B. ornatus = Klotsiclla 



B. belesis =: Glossoplcura B. productus := Glossoplcura 



B. belus :=: Clavaspidella B. parabola = Glossoplcura 



B. bithus = Clavaspidella B. pupa ^ oc cidciifalis = Poliella 



B. dawsoni = Kootenia B. rosscnsis = Piarmingia 



B. hozuclli := Clavaspidella B. sencctus = Bonnia 



Reed's species from India, B. ? stolickai is not Bathyuriscus, and 

 most, if not all, of the Chinese forms are in the same category. B. balls 

 Walcott, which may come from Lower Cambrian strata has a crani- 

 dium much too wide to remain in the genus, but the material is so 

 poor that a new name is not now suggested. 



DESCRIBED SPECIES REFERRED TO BATHYURISCUS 



Besides the species discussed below, B. rotundatus (Rominger) be- 

 longs to the typical group of the genus. 



TYPICAL, NONSPINED GROUP 



Bathyuriscus haydeni (Meek) 



Bathyurus ? haydeni Meek, 6th Ann. Rep. U. S. Geol. Surv. Terr., (1872) 



p, 482, 1873. 

 Bathyuriscus haydeni Walcott, Smithsonian Misc. Coll., vol. 64, no. 5, p. 341, 



pi. 46, figs. 2-2^^ 19 16. 



Meek had very fragmentary material and but little has been found 

 since, but the species is apparently correctly understood. 



Middle Cambrian, Meagher ; north of the Gallatin River, east of 

 Logan, Montana. 



Cotypes.—\J. S.^.M. no. 7863. 



Bathyuriscus powersi Walcott 



Bathyuriscus (Poliella) pozversi Walcott, Smithsonian Misc. Coll., vol. 64, 

 no. 5, P- 351, pl. 46, fig. I, 19T6. 



Middle Cambrian, Meagher ; Pole Creek, Madison Range, Montana. 



Bathyuriscus obrutchevi (Lermontova) 



Pr actus sculpt us Korovin (not Barrande) 1924. (Reference not available.) 

 Olcnoidcs obrutchevi Lermontova, Bull. Com. Geol. Leningrad, vol. 44, no. 8, 

 p. 764, pl. 18, figs, i-io, 1926. 



Middle Cambrian ; Tcheremkhova, Irkutsk, Siberia. (~ 



Bathyuriscus piedmontensis, n. sp. 



Bathyuriscus sp. undet. Walcott, Smithsonian Misc. Coll., vol. 64, no. 5, p. 348, 

 pi. 49, fig. 3, sa, 1916. 



