334 



BRACHIOPODA. 



[ANA. ATH. 



interplicata, Hall, 1852, (Atrypa interpli- 

 cata,) Pal. N. Y., vol. 2, p. 275, Niag- 

 ara Gr. 



reversa, Billings, 1857, (Pentamerus re- 

 versus,) Rep. of Prog. Geo. Sur. Can., 

 p. 215, Mid. Sil. 



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

 Mus. Nat. Hist., p. 104, and Pal. N. Y., 

 vol. 3, p. 260, Low. Held. Gr. 

 ANAZYGA, Davidson, 1883, Supp. to Brit. 

 Brachiopoda, vol. 5, pt. 1, p. 128. [Ety. 

 ana, upward ; zygos, a connecting band.] 

 Small, longitudinally oval and striated ; 

 position of spiral cones as in Zygospira ; 

 about four coils in each spiral cone ; 

 stems attach to the hinge plate of the 

 dorsal valve, extend parallel for a short 

 distance, and then, bending at right an- 

 gles, form two large curves facing the 

 lateral parts of the valve ; before reach- 

 ing their furthest extension in front, 

 they give off a circular band or loop, 

 which is directed upward toward the 

 beak, and is exterior to the spiral cones 

 on their dorsal side. Type A. recurvi- 

 rostra. 



recurvirostra, Hall, 1847, (Atrypa recurvi- 

 rostra,) Pal. N. Y., vol. 1, p. 140, Tren- 

 ton Gr. 



Anomia, Linnaeus, 1767, Syst. Nat., 12th Ed. 

 [Ety. anomios, unequal.] Not Palae- 

 ozoic. 



biloba, see Orthis biloba. 



pecten, see Strophomena pecten. 



reticularis, see Atrypa reticularis. 

 Anomties, Wablenberg, 1821, Act., Upsal. 



exporrectus, see Cyrtia exporrecta. 



glaber, see Spirifera glabra. 



punctatus, see Productus punctatus. 



resupinatus, see Orthis resupinatus. 



reticularis, see Atrypa reticularis. 



rhomboidalis, see Strophomena rhomboid- 

 alis. 



tcabriculus, see Productus scabriculus. 



semireticulatus, see Productus semireticu- 



latus. 



ATHYRIS, McCoy, 1844, Carb. Foss. Ireland, 

 pp. 128 and 146. [Ety. a, without ; 

 thuris, a small door ; in allusion to the 

 absence of a deltidium or door. But 

 the name is erroneous.] Nearly orbic- 

 ular or ovate, both valves convex ; no 

 cardinal area, foramen, or hinge-line ; 

 spiral appendages attached to the hinge 

 plate of the dorsal valve, very large, 

 nearly filling the shell ; a strong mesial 

 septum in rostral part of dorsal valve ; 

 dental lamellae moderate ; pallial and 

 ovarian impressions thick, numerous, 

 dichotomous; tissue of shell fibrous. 

 Type A. spiriferoides. 



americana, Swallow, 1863, Trans. St. 

 Louis Acad. Sci., vol. 2, p. 89, Kaskas- 

 kia Gr. 



angelica, Hall, 1861, 14th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 99, and Pal. N. Y., 

 vol. 4, p. 292, Chemung Gr. 



argentea, Shepard, 1838, Am. Jour. Sci. 

 and Arts, vol. 34, p. 152, Up. Coal Meas. 



biloba, Winchell, 1865, (Spirigera biloba,) 



Proc. Acad. Nat. Sci., p. 118, Kinder- 

 hook Gr. 

 blancha, Billings, 1863, Proc. Port. Soc. 



Nat. Hist, vol. 1, p. 115, Low. Held. Gr. 

 caputserpentis, Swallow, 1863, Trans. St. 



Louis Acad. Sci., vol. 2, p. 90, Up. Coal 



Meas. 

 charitonensis, Swallow, 1860, (Spirigera 



charitonensis,) Trans. St. Louis Acad. 



Sci., vol. 1, p. 651, Coal Meas. 

 chloe, Billings, 1860, Can. Jour., vol. 5, 



p. 282, Ham. Gr. 

 clara, Billings, 1860, Can. Jour., vol. 5, 



p. 274, Up. Held. Gr. 

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



Geo. Expl. 40th parallel, vol. 4, p. 256, 



Waverly Gr. 

 clintonensis, Swallow, 1863, Trans. St. 



Louis Acad. Sci., vol. 2, p. 89, Kaskas- 



kia Gr. 

 clusia, Billings, 1860, Can. Jour., vol. 5, p. 



279, Up. Held. Gr. 

 cora, Hall, 1860, 13th Rep. N. Y. St. Mus. 



Nat. Hist., p. 94, and Pal. N. Y., vol. 4, 



p. 291, Ham. and Chemung Grs. 

 corpulenta, Winchell, 1863, (Spirigera 



corpulenta,) Proc. Acad. Nat. Sci., p. 6, 



Waverly Gr. 

 crassicardinalis, White, 1860, Bost. Jour. 



Nat. Hist., vol. 7, p. 229, Waverly Gr. 

 eborea, Winchell, 1866, (Spirigera eborea,) 



Rep. Low. Peninsula Mich., p. 94, 



Ham. Gr. 

 euzona, Swallow, 1863, Trans. St. Louis 



Acad. Sci., vol. 2, p. 91, Kaskaskia Gr. 

 different, McChesney, 1860, New Pal. 



Foss., p. 47, syn. for A. subtilita. 

 formosa, Swallow, 1863, Trans. St. Louis 



Acad. Sci., vol. 2, p. 91, Kaskas- 

 kia Gr. 



fultonensis, Swallow, 1860, (Spirigera ful- 

 tonensis,) Trans. St. Louis Acad. Sci., 



vol. 1, p. 650, Ham, Gr. 

 hannibalensis, Swallow, 1860, (Spirigera 



hannibalensis,) Trans. St. Louis Acad. 



Sci., vol. 1, p. 649, Waverly or Kinder- 

 hook Gr. 

 hawni, Swallow, 1860, (Spirigera hawnii,) 



Trans. St. Louis Acad. Sci., vol. 1, p. 



652, Coal Measi 

 headi, see Zygospira headi.. 

 headi var. anticostiensw, see Zygospira 



headi var. anticostiensis. 

 headi var. borealis, see Zygospira headi 



var. borealis. 

 harpalyce, Billings, 1863, Proc. Port. Soc. 



Nat. Hist., vol. 1, p. 116, Low. Held. Gr. 

 hirsute, Hall, 1858, Trans. Alb. Inst., vol. 



4, p. 8, and Bull. Am. Mus. Nat. Hist., 



p. 49, Warsaw Gr. 

 incrassata, Hall, 1858, Geo. Rep. Iowa, p. 



600, Burlington Gr. 

 intervarica, McChesney, 1860, Pal. Foss., 



p. 78, Burlington Gr. Not recognized, 

 jacksoni, Swallow, 1860, (Spirigera jack- 



soni,) Trans. St. Louis Acad. Sci., vol. 1, 



p. 651, Coal Meas. 

 julia, see Meristella julia. 



