1881.] NATURAL SCIENCES OF PHILADELPHIA. 347 



1861. Eretmocr. cloelia Hall. (Actinocr. cloelia) De«c. Xew. Sp. Crin., p. 1 : also 

 Bost. Journ. Nat. Hist., p. 266 ; Meek and Worth., 1873, Eretmocr. (Batocr.) 

 cloelia, <ti;o1. Rep. 111., v, p 368. Upper Burlington limest. Burlington, 

 lea. 



1861. Eretmocr. corbulis. (Actinocr. cor^ulis) I5esc. Xew. Sp. Pal. Crin. p. 1 ; 

 also Best. .Journ. Nat. Hist., p. 265 ; Meek and Worth , Batocr. — Eretmocr. f?) 

 — corbulis, Geol. Rep. 111., v,p. 368. Lower Burlington limest. Burlington, 

 Iowa. 



*1860 Eretmocr. coronatus Hall. (Actinocr. coronatus) Supp. tJeol. Rep. Iowa, 

 p. 28, Photogr. PI. 3, figs. 1-2. Lower Burlington limest. Burlington, Iowa. 



1560. Eretmocr. gemmiformis Hall. (Actinocr. gemmiform's) Supp. Geol Rep. 



Iowa, p. 23, Photogr. PI. 3, fig. 6; Meek and Worth., BatOcr.—Eretmocr.(?) 



— gemmiformis, Geol. Rep. III., V, p. 368. Lower Burlington limet. Bur- 

 lington, Iowa. 

 *1S55. Eretmocr. Eonincki Shumard. (Actinocr. Konincki) Geol. Rep. Mtfsouri; 



by Swallow, pt. ii, p. 194. PI. A, figs. 8 a, b, c : M-ek and Worth,, Batocr. 



Konincki, Geol. Rep. 111., v, p. 367. Upper Burlington limest. BurLngton, 



Iowa. 

 Si/n. Actinocr. urnaeformis McChesney, 1860. New. Pal. Foss. p. 23 ; Meek 



and Worth., Batocr. — Eretmocr.(T) — urnaeformis, Geol. Rep. 111., v, p. 368. 

 *1861. Eretmocr. leucosia Hall. (Actinocr. leucosia) Dese. New. Pal. Crin., p. 1 ; 



also Bost. Journ. Nat, Hist., p. 261. Lower Burlington limest. Burlington, 



Iowa. 

 1S59. Eretmocr. magnificus Lyon and Cass. Type of the genus. Am. Journ. Arts 



and Sci. (ser. 2), vol. 28, Septbr., p. 241; Meek and Worth., Batocr.— 



Eretmocr.— magnificus, Geol. Rep. 111., v, p. 368. Keokuk limest. Hardin 



Co., Ky. 

 1361. Eretmocr. matuta Hall. (Actinocr. matata) Dese. New. Sp. Crin., p. 14; 



Meek and Worth., G ol. Rep. 111., v, p. 368, Upper Burlington limest. 



Burlington, Iowa. 

 1369. Eretmocr. neglectus Meek and Worth. (Batocr. — Eretmocr.— neglectus) 



Proc. Acad. Nat. Sei., Phila., p. 355 ; Geol. Rep. Ill,, v, p. 377, PI. 5, fig. 3. 



Lower Burlington limest. Burlington, Iowa. 

 1S58. Eretmocr. ramulosus Hall. (Actinocr, ramulosus) Geol. Rep, Iowa, i, pt. ii, 



p. 615, PI 15, fig. 7 ; Wachsm. and Spr., 1878. Proc. Acad. Nat. Sci., Phila., 



p. 237. Burlington and Keokuk Transition bed, and Lower Keokuk limest. 



Burlington and Augusta, Iowa, and Nauvoo, 111. 

 It is more than probable that this species is a Syn. of E. magnificus. 



1561, Eretmocr. remibraohiatus Hall. (Actinocr. remibrachiatus) Dese. New. Sp. 



Crin., i>, 11, Photogr. PI. 3, fig \ 8-9; Meek and Worth., Geol. Rep. III., 

 V, p. 368, Upper Burlington limest. Burlington, Iowa. 

 1355. Eretmocr. Verneuilianus Shumard. (Actinocr. Verneuilianus) Geol. Rep. 

 Missouri, by Swallow, Pt. ii, p. 193, PI. A, figs, la, b; Meek and Worth. 

 Batocr, — Eretmocr. — Verneuilianus GcjI. Rep. 111., v, p. 368, PI. 4, figs. 

 3 and 4. Upper Burlington limest. Burlington, Iowa, Illinois and Missouri. 

 Next to Batocr. rotundus this is the most characteristic species of the Bur- 

 lington group. It does not repret-ent a typical form of this genus, the arms 

 like those of E. Konincki being but little flattened, but its structure other 

 wise leaves no doubt that it belongs to Eretnibcrinus. 



