BIBLIOGKAPHIC LIST OF GENERA AND SPECIES. 375 



Cytheropsis ciNCiNNATiENsis Miller. See Elpe cincinnatiensis. 



Cytheropsis concinna Jones. See Aparchites concinnus and Primitia muta. 



Cytheropsis crenulata (Emmons). 



Cytherina crenulata Emmons, Amer. Geology, 1, pt. 2, 1855, p. 220, figs. 75d, c. — 



Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 187, figs. 

 Cytheropsis crenulata Miller, N. A. Geol. Pal., 1889, p. 541 (gen. ref.). 

 Trenton: Middleville, New York. 



Cytheropsis emmonsi.(Vogde8). 



Cytherina subcycUndrica Emmons (preoccupied), Amer. Geology, 1, pt. 2, 1855, 



p. 220, fig. 75b. 

 Cytheropsis subcychndrica Miller, N. A. Geol. Pal., 1889, p. 542 (gen. ref.). 

 Cytherina emmonsi Vogdes, Annals New York Acad. Sci., 5, 1889, p. 13k. 

 Trenton; Middleville, New York. 



Cytheropsis irregularis Miller. See Elpe irregularis. 



Cytheropsis rugosa Jones. See Cytherella? rugosa. 



Cytheropsis siliqua Jones. See Macrocypris? siUqua. 



Cytheropsis subcylindrica Emmons. See Cytheropsis emmonsi. 



Cytheropsis subelliptica (Emmons). 



Cytherina subelliptica Emmons, Amer. Geology, 1, 1855, p. 220, fig. 75a. 

 Cytheropsis subelliptica Miller, N. A. Geol. Pal., 1889, p. 542 (gen. ref.). 

 Trenton: Near Watertown, New York. 



Cytocrinus Roemer. See Melocrinua Goldfuss. 



DACTTLOPHYCUS Miller and Dyer. 



Genotype: D. tridigitatum Miller and Dyer. 

 Dactylophycus Miller and Dyer, Cent, to Pal., 2, 1878, p. 1. — James, Jour. Cincin- 

 nati Soc. Nat. Hist., 7, 1885, p. 164.— Miller, N. A. Geol. Pal., 1889, p. 116. 



Dactylophycus quadripartitum Miller and Dyer. 



Dactylophycus quadripartitum Miller and Dyer, Cont. to Pal., 2, 1878, p. 2, pi. 



3, fig. 1. 

 Eden (Economy): Cincinnati, Ohio, and vicinity. 



Dactylophycus tridigitatum Miller and Dyer. 



Dactylophycus tridigitatum Miller and Dyer, Cont. to Pal., 2, 1878, p. 2, pi. 3, 



fig. 2.— James, Jour. Cincinnati Soc. Nat. Hist., 7, 1885, p. 164.— Miller, N. A. 



Geol. Pal., 1889, p. 116, fig. 29. 

 Eden (Economy) : Cincinnati, Ohio, and vicinity. 



D.ffiDALUS Rouault. Genotype: D. newtoni Renault. 



Daedalus Rouault, Bull. Soc. Geol. France, 2d ser., 7, 1850, p. 736.— Sarle, Proc. 



Rochester Acad. Sci., 4, 1906, p. 203.— Grabau and Shimer, N. A. Index 



Fossils, 2, 1910, p. 247. 

 Vexillum Rouault, Bull. Soc. Geol. France, 2d ser., 7, 1850, p. 733 (Genotype: 



V. labechei Rouault). 



DsBdalus archimedes (Ringueberg). 



Arthrophycus sp. Hall, Pal. New York, 2, 1852, p. 6, pi. 2, fig. 2. 



Spirophyton arcliimedes Ringueberg, Proc. Acad. Nat. Sci. Philadelphia, 1884, 



p. 144, pi. 2, fig. 1. 

 Taonurus archimedes Miller, N. A. Geol. Pal., 1889, p. 146 (gen. ref.). 



