COD. — COM.] 



ECHINODERMA TA 



233 



whitii, Hall, 1861, Desc. New Crinoidea, 

 p. 10, and Bost. Jour. Nat. Hist., vol. 7, 

 p. 237, Burlington Gr. 

 Codonites, Meek & Worthen, 1869, Proc. 

 Acad. Nat. Sci. Phil., p. 84, and Geo. 

 Sur. 111., vol. 5, p. 463. [Ety. kodon, 

 bell ; lithos, stone.] Calyx truncate- 

 obpyramidal, elongate below, which 

 distinguishes it, in form, from Pentrem- 

 ites and allied genera; deltoid plates 

 constricted in the middle ; anal opening 

 large, remote from the center; ambu- 

 lacra narrow, without marginal pores; 

 side platps large, their apposed edges 

 having pinnule sockets ; ten spiracles 

 parallel or subparallel to the ambulacra ; 

 the slits are equally developed in all 

 the interradial areas, while they are 

 absent in the azygous interradius of 

 Codaster. Type C. stelliformis. 



campanulatus, Hambach, 1884, Trans. St. 

 Louis Acad. Sci., vol. 4, p. 548, 

 Burlington Gr. 



dilatatus, Hall, 1861, (Poteriocrinus dilat- 

 atus,) Desc. New Crinoidea, p. 6, and 

 Bost. Jour. Nat. Hist., p. 300, Burling- 

 ton Gr. 



lyra, Meek & Worthen, 1869, (Zeacrinus 

 lyra,) Proc. Acad. Nat. Sci., p. 152, and 

 Geo. Sur. 111., vol. 5, p. 432, Burling- 

 ton Gr. 



subspinosus, White, 1863, Jour. Bost. 

 Soc. Nat. Hist., vol. 7, p. 501, Burling- 

 ton Gr. ^J 



ventricosus, Hall, 1861, (Poteriocrinus 

 ventricosus,) Desc. New Crinoidea, p. 

 6, and Bost. Jour. Nat. Hist., p. 301, 

 Burlington Gr. 

 Coelocrinus, Meek & Worthen, 1865, Proc. 

 Acad. Nat. Sci. Phil., and Geo. Sur. 111., 

 vol. 2, p. 214, syn. for Dorycriuus. 



concavus, see Dorycrinus concavus. -£j 



Comarocystites, Billings, 1854, Can. Jour., 



vol. 2, p. 269, and Can. Org. Rem., 



Fig. 268.— Codonites conicus. 



conicus, Wachsmuth & Springer, (in 

 press,) (Orophocrinus conicus,) 

 Geo. Sur. 111., vol. 8, p. 201, 

 Waverly or Kinderhook Gr. 

 gracilis, Meek & Worthen, 1869, 

 Proc. Acad. Nat. Sci. and Geo. Sur. 

 111., vol.5, p. 467, Burlington Gr. 

 fusiformis, Wachsmuth 

 & Springer, (in press, ) 

 (Orophocrinus fusi- 

 formis, ) Geo. Sur. 111., 

 vol. 8, p. 203, Waverly 

 or Kinderhook Gr. 

 stelliformis, Owen & 

 Shumard, 1850. 

 (Pentremites stelli- 

 formis,) Jour. Acad. 

 Nat. Sci. Phil., 2d 

 ser., vol. 2, p. 67, 

 Burlington Gr. 

 Cosliocrinus, White, 

 1863, Jour. Bost. Soc. 

 Nat. Hist., vol. 7, p. 

 499. [Ety. koilia, 

 belly; krinon, lily.] 

 Distinguished from 

 Hydreionocrinus and Zea- 

 crinus by its balloon- 

 shaped ventral sac or proboscis, and 

 from the former, also, by the less 

 robust body and comparatively longer 

 arms. Type C. dilatatus. 

 cariniferus, Worthen, 1873, (Zeacrinus 

 wortheni,) Geo. Sur. 111., vol. 5, p. 535, 

 St. Louis Gr. 



Fig. 269. — Co- 

 donites fusi- 

 formis. 



Fig. 270.— Comarocystites shumardi. 

 Diagram of part of it. 



Decade 3, p, 61. [Ety. komaron, straw- 

 berry; kustis, bladder.] Body ovate; 

 1st series of plates 3, above which 

 there are from 5 to 11 series, in irreg- 

 ular order ; mouth or valvular orifice 

 near the summit; arms free, grooved, 

 bearing pinnules; ambulacra! orifice at 

 the apex ; column round ; all the plates 

 poriferous. Type C. punctatus. 



