OF SOUTHERN INDIA. 345 



203. — A. KaltenbacM, Miill. fibid., p. 29,) apiiareiitly a Barhatia. 



204). — A. sinuosa, Gueranger, (Album pal. de la Sarthe, 1867, pi. xxi, fig. 7,) is most pro- 

 bably a Barbatia, Ijut the figure is very iudistinct. 



30.5-206. — A iegulata and plana, Gueranger, (ibid., pi. xxi, figs, li and 16,) both belong to 

 Barbatia, and the same would appear to be the case with the next species. 



207. — A. alba-creta, Tate, (Quart. Journ. Geol. Soc, Lond., xxi, p. 40). 



208-210. — A. sablieri, bicarinala, (non biearinata, Reuss), and dilatata (non C. dilalata, 

 d'Orb.), are described by Coquand in his Men. de V etage Aptieu, 1866, pip. 137 et seq. All 

 three externally resemble Trigonoarca. 



211. — A. Cymodoce, Coquand, (ibid., p. 140,) is a true Area. 



212-218. — CuctiUaa Fischeri,* A'Ovh.jS"^., C. signata,'Ro-a\\\., C. vogulica,'E\(i\\yf., Fischeriana, 

 Nyst, 1848, felegans, Fischer = C. subelegans, d'Orb., 1850), C. compressiuscula, Rouill., C. Schou- 

 roicsHi, Rouill., and angularis, Eiehw., are described by Eichwald from cretaceous beds of Euro- 

 pean and Asiatic Russia (Leth. ross., xme livr., 1867, pp. 559 et seq.). Besides these the author 

 quotes several other previously enumerated species and identifies with them some others which 

 Trautschold, d'Orbigny, and others have described from Jurassic beds. Whether Eiehwald's 

 determination of the geological horizons is more correct than that of other authors who have 

 investigated the same subject is, I believe, still au undecided question. 



219-225. — Area Beleitrei, Tevestkensis, Favrei, (non Favrina, P. and R.), hiempsalis, paraUeln, 

 (non Cuadlaa parallela. Con.), Trigeri, and Re/anensis are described by Coquand from Algiers 

 (Const., 1862, pp. 211 et seq.). Of none of the species have the hinge-teeth been examined; the 

 first five have quite the general form of Trigonoarca, the sixth most likely belongs to the same 

 genus, but the seventh is altogether doubtful. 



226-227. — A. Uzambaniensis et Naialensis, Baily, (Quart. Journ. Geol. Soc, Lond., xi, 

 pp. 460,) are from South Africa. The second is a CiccuUcea ; the first either belongs to the same 

 genus or to Trigonoarca. 



228. — CucullcBa cancellafa (non Cue. eadem, Phill., or Rouillier,) was described from South 

 Africa by Krauss from supposed cretaceous rocks (Nov. act. Ac. Leop.-Car., xiv, pt ii, p. 452). The 

 specimen is imperfect, but appears to represent a peculiar type of Cucullma, It is not an Area, and 

 it remains yet to be seen whether it is a Cucullaa, and therefore Tate's suggestion of changing the 

 specific name to " Kraussi" is altogether premature (vide Quart. Journ. Geol. Soc, Lond., 1867, 

 xxiii, p. 161). 



As the geological horizons in the secondary deposits of South Africa do not appear to me sufii- 

 ciently settled as yet, I may here at least quote the two other species of arcinm described from 

 those regions ; Cue. (MacrodonJ Atherslonei, Sharpe, and Area (J Cueull.j Jonesi, Tate, (ibidem, 

 p. 161). 



229-232. — From South America A. subrostellata, brevis, Tocai/mensis, A'Ovh., 2i\\(\. perobliqua, 

 Buch, are on record. The first species may be a Barbatia, the second is probably a CueuUaa, the 

 third an Area, and the fourth would rather appear to be a Trigonia, than any of the genera of arciNjE. 



233. — In Paleon. Am. ^lerid., p. 89, d'Orbigny describes a Cucullaa dilatata, but in the 

 Prodrome he quotes it as identical with the European Gabridis. The former is, however, to all 

 appearance a more inequilateral and less high shell, than the European type of the latter species. 



234-235. — A. Slllimaniana and Cue. dubia, Lea, (Trans. Am. Phil. Soc, vii, p. 259, pi. x, 

 figs. 16-17), are stated to be from cretaceous rocks in Cuba; they are casts, perfectly insufiicieut for 

 specific determination. 



230-246. — Cucullma l" cequilateralis. Meek, antrosa, Mort., exigua, M. and Hayd., (Trigono- 

 area) Maconemis, Conr., G. Nebrascemis, Owen, Skiimardi, M. and H., termifialis, Con., tippana. 

 Con., transvermlis, Gabb, (non A. transversalis, Nyst, 1848), vngnla, Tuomey, and vulgaris, 



* Non A. Fisdieriana, Nyst 1848. 



