18 CARBONICOLA, ANTHRACOMYA, AND NAIADITES. 



and probably belongs to the genus Sanguinolites, though it has somewhat the shape 

 of Anthracomya. 



1843. Morris 1 gives in his ' Catalogue of British Fossils,' 1st edition, 1843, 

 under Unio, some of the shells described in Prestwich's memoir, U. ? aquilinus, 

 U. ? centralis, U. ? dolobratus, U. ? modiolaris, and U. ? Urii ; under the name 

 Cardinia, U. acatus, U. subconstrietus, U. ovalis, U. phaseolus, and U. robustus ; 

 under Modiola, Sowerby and Prestwich's Modiola carinata ; under Mytilus, 

 Fleming's Myalina crassa, Sowerby and Prestwich's My tilus triangularis ; under 

 Avicula, the same authors' Avicula quadrata and A. modiolaris. 



1843-46-55-64-67. H. B. Geinitz, in 1843, in < Gaea von Sachsen,' p. 66, 

 gives the forms My a minuta, Unio carbonarius, Unio uniformis, the last of which, 

 in 1846 (' Grundriss,' &c, p. 443, pi. xvii, figs. 16, 17), Geinitz re-described 

 as Cardinia Goldfussiana, probably because Goldfuss had not noted the fact that 

 Sowerby's shell Unio uniformis was from Oolite beds ; and again in 1855 (' Die 

 Versteinerungen der Steinkohlen-formation in Sachsen ' he gives a list of syno- 

 nyms and references to date, and re-describes the species. 



He describes in 1855 Unio tellinarius, of which he says, " The posterior part of 

 this shell is very variable — in fact, I never saw such a specimen as Goldfuss figures. 

 Mine resemble more closely the second form figured by de Koninck, and when flat- 

 tened, Cardinia phaseolus." A new form, Cardinia Freystenii,])\. xxxv, fig. 7 a, a, 

 here figured and described for the first time, appears to be a short truncate 

 Anthracomya. 



A very important paper by this author appeared in 1864 in ' Neues Jahrbuch,' 

 &c, p. 651, which will be alluded to in detail further on, as it is a criticism on a 

 work which had appeared just previously. 



In 1867, in the 'Neues Jahrbuch f. Min.,' &c, p. 682, Prof. Geinitz figured 

 and described Anthracosia Weissiana from the Saarbruck Coal-field. I have been 

 able to examine, by the kindness of Prof. Geinitz at Dresden, the type specimen, 

 which consists of impressions in a micaceous sandstone. The shell is probably 



1 In Morris's ' Cat. Brit. Foss.,' 2nd edit., 1854, 



Under Unio — 

 Unio ? aquilinus, Sow. 

 „ ? centralis, Sow. 

 „ ? dolabratus, Sow. 

 „ ? modiolaris, Sow. 

 „ ? parallelus, Sow. 

 ,, ? Urii, Fleming. 

 Under Myacites — 

 Myacites Ansticei, Sow. 



Under Myalina — 

 Myalina carinata, Sow. 

 ,, quadrata, Sow. 

 Under Mytilus — 

 My tilus crassus, Fleming. 

 „ triangularis, Sow. 

 Under Avicula — 

 Avicula modiolaris, Sow. 



„ modioliformis, Brown. 



At p. 189, under Cardinia, those forms described as such in the previous edition are repeated; 

 and in addition, under Cardinia (Pachyodon), all those described by Capt. Brown in the ' Aud. Mag. 

 Nat. Hist.,' 1843 (see next page). 



