NUCULANA. 11 
3. Chall: Species. 
Nucuxana, sp., cf. siniqua (Goldfuss). Plate I, figs. 10a, b. 
1837. Nucuna siniqua, A. Goldfuss. Petref. Germ., vol. ii, p. 156, pl. exxy, fig. 13. 
1846. — — 4d. HE. Reuss. Die Verstein. der bohm. Kreideformat., 
pt. il, p. 7, pl. xxxiv, fig. 11. 
1850. Lepa sriniqua, A. d’Orbigny. Prodr. de Pal., vol. ii, p. 236. 
1877, — — A. Fritsch. Stud. im Gebiete der béhm. Kreideformat. 
ii. Die Weissenberger und Malnitzer Schichten, 
p. 117, fig. 18. 
1885. Nucubana sinigua, F. Nétling. Die Fauna der baltisch. Cenoman.- 
Geschiebe (Paleont. Abhandl., vol. ii, pt. iv), p. 27, 
pl. iv, tig. 15. 
1889. Nucuna siniqgua, O. Griepenkerl. Die Verstein. der Senon. Kreide von 
K6nigslutter (Paleont. Abhandi., vol. iv), p. 57. 
1889. Lepa sinigua, #. Holzapfel. Die Mollusken der Aachener Kreide (Pale- 
ontographica, vol. xxxv), p. 203. 
1892. — — F. Vogel. Verhand). der naturh. Ver der preuss. Rheinl., 
&e., vol. xlix, p. 73. 
1893. — _ A, Fritsch. Stud. im Gebiete der bohm. Kreideformat. vy. 
Priesener Schichten, p. 92. 
1895. — — F. Vogel. Die holland. Kreide, p. 37. 
1897. Nucutana, ef. sttrgua, H. Woods. Quart. Journ. Geol. Soc., vol. liii, 
p- 378. 
Non 1842. Nucuta sitteua, H. B. Geinitz. Char. d. Schichten u. Petref. d. sichs.- 
bohm. Kreidegeb., pt. iii, p. 77, pl. xx, figs. 28, 29. 
Remarks.—There are two specimens in the Montagu Smith Collection (Wood- 
wardian Museum), which agree well with the figures of N. siliqua given by 
Goldfuss and Reuss—especially the latter ; but since, like the figured specimens, 
they are in the form of casts, it is difficult to be sure of their identity. This 
form may perhaps belong to the sub-genus Perrisonota, Conrad.' 
Measurements : 
Length : : : ; . 16 mm. (approximate). 
Height i ; : a Gus 
Type.—The type comes from the Aachen Greensand. 
Distribution.—Chalk Rock (Reussianwin-zone) of Cuckhamsley. 
1 ¢ American Journal of Conchology,’ vol. v (1869), p. 98, pl. ix, fig. 24. 
