316 



CEUSTACEA. 



CLASS CEUSTACEA. 



AciDASPis flmbriata, Hall, 1879, Desc. New 

 5" Spec. Fobs, from Niagara Gr. fSlg. 

 fimbriated.] 

 parvula, Walcott, 31st Keg. Rep. 

 Aglaspis eatoni, Whitfield, 1880, Ann. Eep. 

 %, Geo. Sur. Wis., Potsdam Gr. [Ety. 

 proper name.] 

 Agnostds communis. Hall & Whitfield, 

 1877, U. S. Geo. Expl. 40th parallel, 

 Potsdam Gr. [Sig. common.] 

 1- neon, Hall & Whitfield, 1877, U. S. Geo. 

 Expl. 40th parallel, Potsdam Gr. 

 [Ety. proper name.] 

 prolongus. Hall & Whitfield, 1877, U. S. 

 Geo. Expl. 40th parallel, Potsdam Gr. 

 [Sig. prolonged.] 

 tumidosus. Hall & Whitfield, 1877, U. S. 

 Geo. Expl. 40th parallel, Potsdam Gr. 

 [Sig. high swelling.] 

 Agratjlos woosteri, Whitfield, 1878, Ann. 

 J.. Bep. Geo. Sur. Wis., Potsdam Gr. 



[Ety. proper name.] 

 Amphipeltis is from Amphi, on both sides, 



instead of doubtful. 

 Arctinurus, Castelnau, syn. for Lichas. 

 Arges, signifies bright or shining, instead 



of a mythological name. 

 AEiONEi,LDSconvexus,Whitfield, 1878, Ann. 

 - Eep. Geo. Sur. Wis., Potsdam Gr. 

 [Sig. convex.] 

 pustulatus, Walcott, 31st Eeg. Eep. 

 AsAPHOiDiCHNDS, S. A. Miller, 1880, Jour. 

 Cin. Soc. Nat. Hist., vol. 2. [Ety. 

 Asapkus, a genus; eidos, form; ichnos, 

 track.] 

 »/. dyeri, S. A. Miller, 1880, Jour. Cin. Soc. 

 Nat. Hist., vol. 2, Utica Slate Gr. 

 [Etv. proper name.] 

 trifidus, S. A. Miller, 1880, Jour. Cin. 

 Soc. Nat. Hist., vol. 2, Utica Slate 

 Gr. [Sig. trifld.] 

 AsAPHDS caudatus, Green, syu. for Dalman- 

 ites limulurus. (?) 

 cordieri, Castelnau, syn. for Dalmanites 



limulurus. 

 crypturus w;is described by Green in 

 1834, Trans. Geo. Soc. Penn., vol. 1, 

 pt. 1. 

 j,, ditniarsiif, Houcyman, 1870, Proc. Nova 

 ■"-■ Scotia Inst., vol. 5, Lower Silurian. 



[Etjr. proper name.] 

 edinard.1t, Castelnau, syn. for Dalmanites 



limuluru.s. 

 homalonotoides is in 31st Eeg. Eep. N. 



Y. 

 miirchlsoni, Castelnau, syn. for A. gigas. 

 nodostriatus. Hall, 1847, Pal. N. Y., vol. 

 1. Not defined so as to establish a 

 species. 

 1/. triangulatus, Whitfield, 1880, Ann. Eep. 

 Geo. Sur. Wis , Trenton Gr. [Sig. 

 triangular.] 



Atops, Emmons, 1844, Taconic System. 

 This genus should probablj^ be re- 

 stored because it is distinct from Tri- 

 arthrus. There is only one specie.? 

 defined. Atops trilineatus. It is re- 

 lated to Conocephalites, and as a ge- 

 neric name has priority. 



Bathyukus pogonipensis. Hall and Whit- 

 „ field, 1877, U. S. Geo. Expl. 40th 

 parallel, Quebec Gr. [Ety. proper 

 name.] 



Beyeichia lithofactor should be defined as 

 maker of stone, and so also B. petri- 

 factor. 



^ persulcata, Ulrich, 1879, Jour. Cin. Soc. 

 Nat. Hist. vol. 2, Hud. Eiv. Gr. [Sig. 

 very much furrowed.] 

 regularis was named from the regular 

 bars instead of "formed in bars." 



Bronteus was defined by Goldfuss in 1839, 

 in Nova Act. Phys. Med. Cajsareje 

 Leop-Carol. Nat. Curios, xix., pt. 1, 

 p. ,360. 



-1. cyu;i,densis, Logan, 1846, Eep. Geo. Sur. 

 Canada, Low. Held. Gr. [Ety. proper 

 name.] 

 fiabellifer, Goldfnss, Nova. Acta Acad. 



i,'..'5. Cae.s. Leop. Nat. Cur. vol., 19 Up. 



' Silurian. [Sig a fan bearer.] 



r. laphami, Whitfield, 1878, Ann. Eeji. Geo. 

 Sur. Wis., Niagara Gr. [Ety. proper 

 name.] 



Calymene christyi is from the Hud. Eiv. Gr. 

 conradi, Emmons, 1856, Am. Geol., Lor- 



'•f- raiiie Shales or Hud. Eiv. Gr. [Ety. 

 proper name.] 



^ nasuta, Ulrich, 1870, Jour. Cin. Soc. Nat. 

 Hist vol. 2, Niagara Gr. [Sig. nasiite.] 

 rostrata, Vogdes. 1880, Proc. Acad. Nat. 

 Sci., Clinton Gr. [Sig. hooked.] 



Cbratiocaeis grandis, Pohlman, 1881, Bull. 



.y Buf. Soc. Nat. Hist., vol. 4, Water- 

 lime Gr. [Sig. grand.] 



Ceraurus rariis is in 31st Eeg. Eep. 



Chaeiocephalus tumifrons. Hall & Whit- 

 field, 1877, U. S. Geo. Expl., 40th 

 parallel, Potsdam Gr. [Sig. having 

 a tumid front.] 



Conocephalites binodosus instead of C. 

 binodus. 



3. calciferus, Walcott, 1879, 32 Eeg. Eep., 

 Calciferous Gr. [Sig. calcifer- 

 ous.] 



7., calymenoides, Whitfield, 1878, Ann. 

 Eep. Geo. Sur. Wis., Potsdam Gr. 

 [Sig. like a Calymene.] 

 explanatus, Whitfield, 1880, Ann. Eep. 

 Geo. Sur. AVis., Pot>dara Gr. [Sig. 

 spread out.] 



5- harti, Walcott, 1879, 32d Eeg. Eep, 



Calciferous Gr. [Ety. proper name.] 



laticeps. Hall & Whitfield, 1877, U. S. 



