BIBLIOGRAPHY OF PALAEOZOIC CRUSTACEA. 163 



Asaphus expansus Linne Philipsia eichwaldi Fisch., P. ouralica n. sp. 

 Calymene odeni Eichw., C. fischeri Eichw. 



M'Murtrie (H.) Sketches of Louisville and the Fall 

 of the Ohio. Louisville, 1819. 



Somatrikelon megalomaton, p. 74, n. g. and n. sp. 



This new genus under the law of priority should replace the genus 

 Phacops if it were not for the objection to Somatrikelon, which means 

 the same as the word Trilobite used for the class. The name given to 

 the species " having very large eyes " corresponds to that given by Dr. 

 Emmrich to the genus Phacops. 



The author refers "this very curious animal to the vernies class," and 

 remarks: "At first view it appears to have three distinct bodies and one 

 head, which is owing to the former being very broad (nearly one-half an 

 inch) and divided throughout its length by two deep clefts, one on each 

 side of the central part or back, which is elevated a fourth of an inch above 

 the sides, is convex, and terminated at one end by a large head, furnished 

 with unusually prominent eyes and a mouth formed like that of a snapping 

 turtle. From the Falls of the Ohio." The following diagnosis is given: 

 "Corpus tripartitum, rugosum, sinuatum; extremitate altera acuminata 

 curvataque dorso, arcuato, serie tuberculorum utro, bique, capite subro- 

 tundo, oculis peramplis." 



(Phacops rana Green.) ^ 



Nathorst (A. G.) Om lager-foljdem inom Cainbriska 

 formationen vid Andrarurn i Skone. 



In Ofversigt kongl. Svenska Vet.-Akad. Forhandl., 1869, No. 1, p. 61. 

 Contains list of fossils and observations. 



Om de Kambriska och Siluriska lagren vid 



Kiviksesperid i Skone jemte amnarkningar om primor- 

 dial faunans lager vid Andrarum. 



In Geol. Foreningens Stockholm Forhandl., No. 37, vol. 3, 1876. 



Om det inbordes forhollandet af lagren mit 



Paradoxides olandicus och P. tessini po Oland. 



In Geol. Foreningeus Stockholm Forhandl., No. 69, vol. 5, 1881. 



Om det inbordes aldersforhollandet mellaii 



zonerna med Olenellus kjerulfioch Paradoxides olandicus . 



In Geol. Foreningens Stockholm Forhandl., No. 71, vol. 6, 1882. 



The position of the Olenellus beds. 



In Am. Geol., vol. 2, 1888, p. 356. 



