486 CRETACEOIJS PELECTPODA 



posterior elongated tooth is meant a lateral tooth or not ; in any case it would 

 seem to replace it when it extends ^ parallel with the dorsal margin.' Until this 

 point has been cleared up, and the relation of the shell to Cyprina and Cicatrea 

 ascertained, it may be no advantage to replace Conrad's name by another one, 

 for the name Veleda had been used already in 1859 by Blackwall for a species 

 of spiders. 



On page 193, under 12. — Cyprina angulata, Sow., note — 



Briart and Cornet (Foss. de Bracquegnies, p. 68, pi. viii, figs. 26-28, in 

 Mem. Cour. Acad., Belg., vol. xxxiv), give a figure of the hinge of both valves of 

 a species which they say is identical with Sowerby's (7. angulata, of which they 

 compared a specimen from Blackdown, and the hinge of which is badly represented 

 by Sowerby in his Min. Conch., pi. 65. Briart and Cornet's figures show the 

 species to be a Venilicardia, noticed (p. 190) as a sub-genus of Veniella, 



On page 194 add— 



50a. Gyprina proccena, Giimbel, (Ostbayerisch. Grenzgeb., 1868, p. 765), 

 from the Greensand at Neukelheim (Bavaria). The tumid form of the shell closely 

 resembles that of an Isoarca^ hinge unknown. 



505. Cyprina suh-rostrata, Giimbel, (Correspondenz Blatt des Zool. Mineral. 

 Ver. zu Begensburg, vol. xxii, 1868, p. 65), has been proposed for the speciss des- 

 cribed by Geinitz as C. rostrata in Verst. von Kieslingswalde, p. 13, pi. ii^ fig. 12). 



Under No, 69, Isocardia modiolus, Nilss., note — 



Uyckholt (Mel. paleont., Part 1st, 1852, p. 131,) considers this species to be a 

 LitJiodomus, 



69a. Isocardia Sowerhyii, Briart and Cornet (Foss. de Bracquegnies, 1858, 

 p. 70, pi. vii, figs. 17-18). The general form of the shell resembles that of a 

 Meiocardia, but also that of Goniosoma and some species of Opis. As the hinge 

 is unknown, a correct generic determination cannot be attained. 



On page 195 add— 



129a. Venilia elevata, Con., (Am. Journ, Conch., VI, p. 74, pi. 3, fig. 7), 

 has a form resembling that of Meiocardia, but the hinge is unknown. 



1296. C Veleda J lintea, Con., is noticed as Gardium \Lcevicardium\ linteum, 

 on p. 215, sub-No. 146. 



On page 199, under Cyprina [cicateea] coedialis, for Eig. 1, read Eigs. 1-2. 



Family, — Ca nBiiBJE. 

 On page 208 add after the third line from top — 



Griocardium, Conrad, 1870, (Am. Journ. Conch., VI, p. 75). ^^ Multiradiate ; 

 interstices spinose, ribs smooth; anterior lateral tooth long and prominent." This 

 sub-genus, Conrad says, presents a singular deviation from the character of recent 

 spinose species, in having long, slender spines in the interstices between the ribs^ 

 while the ribs are smooth. Type, G. dumosum^ Conrad. 



