31 



Very frequently found at Oji, sometimes in rather large specimens, of 60 

 mm. ill diaueter and ^0 mm. in liciglit and even larger. Smaller specimens 

 are rather common ; they arc not so typical in outüues, less broadened and flat- 

 tened, Lnt readily recognized as hclonging to the same sj;ecies when compared 

 with (he adult form. The adult sjnicimens have not teen found in sufiicieut 

 number for comparison witli the Omori-llound-specimcns. They are, in the 

 avemge, between the two figures given by Morse, but nearer to the older form. 

 Scalar ia' daihiutiila Montague (Turbo). 



(Test. Brit. Vol. II p. 297, and suppl. ]>. 124.— Sowerby, Thes. Conch, 

 vol. I, pi. 33, f. 47.-S. Wood, Crag JIoll. I, p. 94, pi. 8, f. 19.— Forbes 

 and Hauley, Brit. Moll. III. p. 209, pi. 70, f 3S4.— Jeflreys, Brit. Conch 

 IV, p. 97.1. 



The shell, which las e. g. ^^'cinKau^f states ia the Conchylien des Mittel- 

 meeres V. 2, p. 238) has not always been correctly determined, seems not to 

 ditier from S. Trevelyana (^Leach) Sow., Thes. J, p. 100, pi. 35, f. 129. Compare 

 S. Wood's Crag 3Io!l. 1. c. f. 20 and Supplement, p. 58, pi. IV. f. 6. The 

 differences are not given uniformly by the British authors, S. Trevelyana being 

 not constantly more elongated, nor S. clathvatula ha\ii)g the ribs less angulated 

 at the upper end. The aperture is also oblitpiely elliptic in both. Tlic small 

 specimens found at OJi do not differ at all from the Crag specimens.. As for the 

 mediterranean and fossil Viennese spccinieus, I leave the ([ueslion unsettled. 



Scalar la caiictUata Brocchi. 

 (Cofpi. Subapcnn. p. 377, pi. 7. f. S. — S Woo 1, CragOdoU. I, p. 95, pi. 8, 

 f. 22, and Sniipl. p. 59, pi. 4, f. 2.). 



Although I can not compare the very scarce Oji-speeimens with Brochi's 

 figui-e, or subapennino originals, there can be no doubt about their belonging to 

 the same species with the Crag-specimens. The margin of the lower volution, 

 the slight convexity of the whorls, which is quite obvious in spite of the rather 

 deep suture, the large number of ribs and transverse stria? producing the 

 reticulated surface, all agree. The size is very little above that which ^\''ooll 

 indicates (reaching 12 mm. in length and nearly 4 in breadth). 



Monoftijgmn puncticulata Govdd. 



(Otia conchologica, p. 149. — Syn. ? Monoptygraa eximia Lischke, Malako- 



zool. Bl. vol. 19, p. 103, June 1873, and -lapan. Meeres Conch, v. 3, 



p. 59, pi. 3, f. 4-6.). 



A few small fragmentary spccimena of this subidated shell (length to 



breadth as 3 : 1), with flat, transversely grooved whorls, decj) suture and small 



aperture, have been found at Oji. Though a little imix'rfect, they show ctmiplete 



identity with GouKls iliagnosis and description. Whether the above named 



sjKcies of Li.scliKü'.s i.s identical, I leave undccideil. 



Monojjtygma tiriata Gray. 

 (Sowerby Thes. Vol. II, p. 81C, pi. 172. f. IS.). 



