In THE VOYAGE OE Il.M.s CHALLENGER. 



iu the Cretai eoua deposits of the Lebanon. Loricula syriaca is represented by a single 

 example affixed to a specimen of Ammonites syriacus. The species is smaller than the 

 one described by Darwin, bul is much more complete, and shows the correctness of 

 Darwin's supposition with regard to the identification of the valves. In a footnote 

 Dames makes mention of a third species of the same genus Loricula, which — according 

 to Prof. Zittel — was found in the Cretaceous deposits of Dtilmen in Westphalia. 1 So 

 the genus Loricula seems to occur in all the strata of the upper Cretaceous formation. 

 .Mars-in - (1881) enumerated the fossil Cirripedia found in the White Chalk of Rtigen. 

 There occur in it six species of Scalpellum, two of Pollicipes, and one Verruca; one 

 Scalpellum (Scalpellum depressum) and one Pollicipes (Pollicipes cancellatus) are new 

 to science. 



Martin 3 (1880) described three species of Balanus (Balanus tintinnahulum, Balanus 

 amphitrite, and Balanus amaryllis), as occurring in the Tertiary strata of Java. The 

 same author 4 (1881) states that Balanus amaryllis occurs in the stream- tin-deposits of 

 Blitong, and also" in newer Tertiary strata in the Padang Highlands of Sumatra. 

 Berkeley Cotter" (1881) observed in the marine Tertiary deposits " do Tejo, do Sado e do 

 Algarve," only Balanus tintinnahulum and a second species of Balanus which he has not 

 determined. 



During the so-called Mammoth Expedition, F. Schmidt 7 (1872) observed three species 

 of Balanus (Balanus porcatus, crenatus, and hameri) sub-fossil at the mouth of the 

 river Yenisei. 



Together, all these scattered notes tend to show that Pollicipes and Scalpellum are 

 the oldest genera of Cirripedia, fossils of which have as yet been found ; that with a single 

 exception (Loricula) the fossil Cirripedia belong to the same genera which still inhabit the 

 seas; that the sessile Cirripedia only appear long after the pedunculate forms, and that 

 Verruca is the oldest genus of sessile Cirripedia known. Comparing the large amount of 

 information contained in Darwin's palseontological monographs with what has since been 

 added to our knowledge, we need not wonder that the above-mentioned conclusions are 

 nearly the same as those Darwin came to in 1854. 



Recently Clarke 8 (1882) has published a note in which a " Cirriped Crustacean from the 



1 Under the name Encrinurus egani, n. sp., S. A. Miller has described (1879) a trilobite which, in general appearance 

 at least, shows a very striking resemblance to Loricula. . . . (Journ. Cincinnati Soc. Nat. Hist,, vol. ii. 1879, p. 254, pi. 

 \ v. fig. 1). This fossil was found in the magnesian limestone of the Niagara group, at Joliet, Illinois. 



" Marsson, Th., Die Cirripedien unci Ostracoden der weissen Schreibkreide der Insel Riigen, Mitth. natwrwiss. 

 Vereiv r. A' u- I'nrpoiDim ni u. Unyen, Ed. xii. 1881. 



■ M;ii tin, K., Die Tertiarschichten auf Java, Leiden, Brill., 1879-80. 



4 Martin, K., On a post-tertiary fauna from the stream-tin-deposits of Blitong, Notes Leiden Museum, vol. iii. 1881. 



5 Martin mid Wichman, Samml. des geologischen Reichsmuseums in Leiden (1), Bd. i. 1881-83. 



Cotter, J. C. Berkeley, Fosseis das bacias terciarias marinas do Tejo, do Sado e do Algarve, Journ. Sei. Math. Phys. 

 Nat. Acad. LUh., wvi. 1881. 



7 Schmidt, R, M6m. Acad. Sci. St. Pe'tersk, t. xviii. I. 1872. 



» Clarke, J. M., Cirriped Crustacean from the Devonian, Amer. Journ. Sci. and Arts, ser. 3, vol. xxiv. 1882. 



