336 



BRACHIOPODA. 



[ATR. 



scar ; dorsal valve convex, with or with- 

 out a mesial fold ; hinge plate divided 

 in the middle with a tooth-like plate on 

 each side, the crura originating outside 

 of these close to the dental sockets, and 

 outside of the latter, close to the shell 

 margins, there is a crenulated fold, which 

 occupied the groove at the base of the 

 tooth ; the spires originating from the 

 crura form two hollow cones, directed 

 into the cavity of the dorsal valve, their 

 adjacent sides being flattened and apices 

 brought close together near the center 

 of the bottom of the cavity ; the pro- 

 cesses at the base of the crura are di- 

 rected into the cavity of the dorsal 

 valve, and unite to form a loop ; surface 

 smooth, striate, or costate ; structure 

 fibrous. Type A. reticularis. 



acutiplicata, see Leptocoelia acutiplicata. 



acutirostra, see Rhynchonella acutirostra. 



sequiradiata, Conrad, 1842, Jour. Acad. 

 Nat. Sci., vol. 8, p. 266, Low. Held. Gr. 



sequiradiata, see Rhynchonella sequira- 

 diata. 



affinis, syn. for Atrypa reticularis. 



altilis, see Rhynchonella altilis. 



ambigua, see Camarella arnbigua. 



aprinis, see Rhynchonella aprinis. 



arala, see Pentamerella arata. 



aspera, Schlotheim, 1813, (Terebratula 

 aspera,) Petrefaktenkunde, p. 263, Ham. 

 and Chemung Grs. 



aspera var. occidentalis, Hall, 1858, Geo. 

 Rep. Iowa, vol. 1, pt. 2, p. 515, Ham. Gr. 



bidens, see Rhynchonella bidens. 



bisulcata, see Camarella bisulcata. 



borealis, Schlotheim, as identified by 

 d'Archiac & Verneuil. Not American. 



brevirostris, as identified by Hall, Pal. 

 N. Y., vol. 2, p. 278. See Pentamerus 

 brevirostris and Anastrophia verneuili. 



camura, see Trematospira camura. 



capax, see Rhynchonella capax. 



cassidea, as identified by d'Archiac & 

 Verneuil. Not American. 



chemungensis, Conrad, 1842, Jour. Acad. 

 Nat. Sci., vol. 8, p. 265, Chemung Gr. 



circulus see Camarella circulus. 



condnna, see Nucleospira concinna. 



comis, see Pentamerus comis. 



concentrica, syn. for Athyris spiriferoides. 



congesta, see Triplesia congesta. 



congregata, see Stenochisma congregatum. 



contracta, see Stenochisma contractual. 



corallifera, see Eichwaldia corallifera. 



crassirostra, Hall,U852, Pal. N. Y., vol. 2, 

 p. 269, Niagara Gr. 



crenulata see Terebratula crenulata. 



cuboides, as identified by Hall and others. 

 See Rhynchonella venustula. 



cuneata, see Rhynchonella cuneata. 



cuspidata, see Triplesia cuspidata. 



cylindrica, see Meristella cylindrica. 



deflecta, Hall, 1847, Pal. N. Y., vol. 1, p. 

 140, Trenton Gr. 



dentata, see Rhynchonella dentata. 



disparilis, see Ccelospira disparilis. 



dubia, see Rhynchonella dubia. 



dumosa, Hall, 1843, Geo. Rep., 4th Dist. 



N. Y., p. 272, Chemung Gr. 

 duplicata, see Stenochisma duplicatum. 

 elongata, syn. for Rensselferia ovoides. 

 emacerata, see Rhynchonella emacerata. 

 exigua, Hall, 1847, Pal. N. Y., vol. 1, p. 



141, Trenton Gr. 



eximia, see Stenochisma eximium. 

 extans, see Triplesia extans. 

 flabella, syn. for Leptoccelia hemispherica. 

 flabellites, see Leptocrelia flabellites. 

 galeata, see Pentamerus galeatus. 

 gibbosa, Hall, 1852, Pal. N. Y., vol. 2, p. 



79, Clinton Gr. 

 globuliformis, see Leiorhynchus globuli- 



forme. 



hemiplicata, see Camarella hemiplicata. 

 hemispherica, see Leptoccelia hemispherica. 

 hirsuta, see Trematospira hirsuta. 

 hystrix, Hall, 1843, Geo. Rep. 4th Dist. 



N. Y., p. 272, and Pal. N. Y., vol. 4, p. 326, 



Chemung Gr. 

 impressa, Hall, 1857, 10th Rep. N. Y. St. 



Mus. Nat. Hist., p. 122, and Pal. N. Y., 



vol. 4, p. 315, Schoharie Grit. 



FIG. 541. Atrypa reticularis. , Dorsal valve; 6, 

 ventral valve ; c, anterior view. 



impressa, Shaler. The name was preoc- 

 cupied. 



increbescens, syn. for Rhynchonella capax. 

 inflata, Conrad, 1843, Geo. Rep. 3d Dist. 



N. Y. Not defined, 

 intermedia, Hall, 1852, Pal. N. Y., vol. 2, 



p. 77, Clinton Gr. 



interplicata, see Anastrophia interplicata. 

 Isevis, see Meristella leevis. 

 lamellata, see Rhynchonella lamellata. 

 laticotta, Phillips, 1841, (Terebratula lati- 



costa,) Pal. Foss., Chemung Gr. This 



species is not clearly identified in 



America. 



lentiformu, syn. for Atrypa reticularis. 

 limitaris, see Leiorhynchus limitare. 

 mansoni, Salter, ' 1852, (Rhynchonella 



mansoni,) Sutherland's Jour., vol. 2, p. 



ccxxi, Devonian, 

 marginalis, (?) Dalman, 1827, (Terebratula 



marginalis,) Vet. Acad. Handl., p. 143, 



Niagara Gr. 



medialis, see Eatonia medialis. 

 mesacostalis, see Leiorhynchus mesacostale. 

 modesta, see Zygospira modesta. 

 nasuta, see Meristella nasuta. 

 naviformis, see Athyris naviformis. 



