INVERTEBRATE PALEONTOLOGY . 35o 



FASCIOLARIID^E. 

 Genus FASCIOLARIA, Lamarck. 



Synon.—Fateiolaria, Lamarck (1799), Prodr., 73; and (1801) Syst. An., 83; again (1809) Pliil. 

 Zool., * " : also (1832) Hist., VII, 117.— Roissy (1805), Moll., VI, 76.— Montfort (1810), 

 Conch. Syst., II, 490.— Schum. (1817), Essai, 243.— Schweigg. (1820), Natgscli., 725 

 (as a subgenus under Fuans).— Det.ba.ves (1830), Encyc. Meih., Ill, 114 ; and (186G) 

 An. sans Vert. Bassin de Paris. Ill, 294.- Blainv. (1825), Malar., 397.— Valenc. (1833), 

 Humb. Voy. Zool., II, 284.— D'Orbigoy (1841), Moll. Cub., I, 200.— Gray (1847), Proc. 

 Zool. Soc, 137. — H. and A. Adams ( 185:}), Genera Recent Moll., I, 100. — Meek and 

 Harden (1856), Proceed. Acad. Nat. Sci. Philad.,VIII,66.— Chenu (1859), Man. Conch., 

 I, 180.— Gabb (1864), Palasont. California, I, 100; and (1869) ib., II, 220.— Stoliczka 

 (1868), Palieont. Indica, II, 106.— Tryon (1873), Am. Mar. C :h., 20. 



Pyntla, Perry (1811), Conch., * * (uot Lamarck, 1799, nor Linck, 1807). 



roeranea, Raf. (1815), Anal. Nat., 145. 



rerebrispira, Conrad (1862), Proceed. Acad. Nat. Sci. Philad., XIV, 28 (as a subgenus). 



Piestochilus, Meek (1864), Smithsonian Check-List N. Am. Cret. Fossils, 22 (proposed as a sub- 

 genus under Clurillilhts). 



Elym. — Fasciola, a little band. 

 Type. — Miner tulipa, Liuuseus. 



Shell fusiform, rather thin; spire acuminate, generally papillate at the 

 apex, usually somewhat less than the length of the aperture and canal, hut 

 sometimes equaling or exceeding the same; volutions evenly convex, more or 

 less angular, nodular, or provided with large folds, or costse, rarely compressed 

 or flattened, last one tapering below into the more or less produced, generally 

 straight canal; outer lip thin on the edge, and transversely striated, crenate 

 or rarely smooth within; columella imperforate, somewhat twisted, and pro- 

 vided with a few oblique, generally anteriorly-located, plaits, or folds ; surface 

 spirally lined or ridged, or sometimes nearly smooth. 



The foregoing diagnosis is worded so as to include, along with the 

 typical forms, three apparently extinct groups, that may be generically dis- 

 tinct, but still seem to be so related to each other and to the typical group, 

 as hardly to be separable more than subgenerically. These sections, or sub- 

 genera, may lie distinguished as stated below: 



1. FASCIOLARIA, Lamarck (typical). 



Shells generally varying from medium to very large sizes, with 

 spire and canal produced; volutions evenly convex, nodular, angular, 

 or provided with vertical folds ; plaits exposed at the lower inner 

 margin of the columella, in a direct view into the aperture; outer 

 lip striate or crenate within. — (Type as already stated ) 



