42 ONYCHIOPSIS. 
1848. ? Sphenopteris Sillimani, Bronn, Index Pal. Nomencl. p. 1170. 
1850. Sphenopteris Mantelli, Unger, Gen spec. plant. foss. p. 108. 
1851-52. Sphenopteris Mantelli, Bronn, Leth. geog. vol. ii. p. 49, 
pl. xxviil. fig. 40d. ; 
1852. Sphenopteris Mantelli, Ettingshausen, Abh. k.-k. geol. Reichs. p. 14, 
pl. iv. figs. 3 and 4. 
1854. Sphenopteris Mantelli, Morris, Brit. foss. p. 21. 
? Sphenopteris Sillimani, Morris, loc. cit. p. 21. 
1865. Microlepia Mantelli, Ettingshausen, Farnkrt. Jetztwelt, p. 216. 
1867. Sphenopteris antipodum, Tate, Quart. Journ. Geol. Soc. vol. xxiii. 
p. 139. 
1869. Sphenopteris (Davallioides) Mantelli, Schimper, Trait. pal. vég. vol. i. 
p. 393. 
1871. Sphenopteris Mantelli, Schenk, Paleontographica, vol. xix. p. 208, 
pl. xxiii. figs, 1-8. 
1871. Sphenolepis Kurriana, Schenk, pl. xxv. fig. 6, loc. cit. p. 243, pl. 
Xxxviii. fig. 2. 
1871. Sphenopteris Gipperti, Schenk (in part), Joc. cit. pl. xxv. figs. 3 and 3a. 
(Not the other figures of this species.) 
1874. Sphenopteris Mantelli, Schimper, Trait. pal. vég. vol. iii. p. 469. 
1875. Sphenopteris Mantelli, Schenk, Paleeontographica, yol. xxiii. p. 168, 
pl. xxviii. fig. 12. 
1878. Sphenopteris Roemeri, Dupont, Bull. Ac. R. Belg. vol. xlvi. ser. ii. 
p- 396. 
1881. Sphenopteris Mantelli, Heer, Secc. Trab. Geol. Portugal, 1881, p. 12, 
pl. xi. figs. 1-5, pl. xii. figs. 2b and 24d. 
1881. Sphenopteris valdensis, Heer, loc. cit. p. 14, pl. xv. figs. 9, 10 and 13, 
pl. xvi. fig. 54. (The other figures more doubtful.) 
1883. ? Triehomanites laxum, Tenison-Woods, Proc. Linn. Soc. N. S. 
Wales, vol. viii. pt. i. p. 95, pl. x. fig. 2. 
1883. ? Trichomanites spinifolium, Tenison- Woods, ibid. p. 95, pl. iii. fig. 7. 
1889. Sphenopteris Mantelli, Fontaine, Potomac Flora, p. 91, pl. 1. figs. 
1 and 2. 
1890. Sphenopteris Mantelli, Nathorst, Denksch. k. Ak. Wiss. math.-nat. Cl. 
vol. lvii. p. 55 (referred to Onychium). 
1891. Sphenopteris Mantelli, Saporta, Compt. Rend. exiii. p. 250. 
1891. Sphenopteris Mantelli, Engelhardt, Abh. Isis. Dresden, p. 79. 
1892. ° ? Trichomanites laxum, Jack and Etheridge, Geol. Pal. Queensland 
and New Guinea, p. 316, pl. xviii. fig. 9. 
Type. Portions of pinne. 
The type specimen was originally figured by Stokes and Webb 
in an anonymous paper which appeared in the Transactions of the 
Geological Society for 1824.’ These authors hesitated to pronounce 
a decided opinion on the affinity of the plant, but recognized that 
1 Trans. Geol. Soc. ser. ii. vol. i. p. 421. 
