121 CRETACEOUS PELECYPODA 



A. inceqnalis (Tel. incsqnalis, Sow.j uoa id. Hauley), A. subdecusmta, Rom., sp., A. coalulata, Goldf., 

 sp., (Tellina), A. concentrica, Reuss, 1843 (nou z'^. Gould, 18 ??), and perhaps also ^. /aweZ/csa, 

 Reuss, sp. (SolenJ, are all species of Linearia, but I expect that several species will be found 

 identical among themselves, such as those described by Reuss and Romer from Germany with 

 those of d'Orbigny from France. 



38-39. — Ar. biradiata and fenestrala, Zittel, (Denksch. Alcad., Wien, 186J, xxiv, pt. ii, 

 pp. lis — 119,) are also Linearia; the same autlior redescribes Ar. semiradiala, Math., from 

 the Gosau. 



40. — Linearia (Arcopagia) muUilineaia, Coq. (Men. etage Aptien, 18G.5, p. 98,) has the general 

 Ibrm of L. circinalis, but is said to have the left valve more convex than the right one. 



41-42. — Ar. reticulata and Ar. cremilata, Guevanger, (Album paleont. de la Meuse, 18G7, 

 pi. XV, figs. 13 and 16,) are Linearire. The author also figures Lin. semiradiata, Math, sp., 

 under the name Arc. radiata, d'Orb. 



43-44. — Tell, parallela and Refanensis, Coquand, from Algeria are, if they belong to the 

 TELLlNiDJi, species of Mmra. 



45-53. — Meek (Check list of N. American cretaceous fossils. Smiths. Misc. Coll., No. 177, 

 18G4, p. 14,) quotes the following : Tell. ? Chei/emiensis, T. Eufalensis, aquilateralis, nitidula, 

 Ri.pleyana, scitida, ? sulellijiiica, Meek and Hayd., [nou T. suhelVqtlica, Sow., apud Reeve], 

 (Tellinimera) eiorea, (TelUnimera) limatida. 



54-57. — The same author also quotes Arc. texana, Romer, which more likely belongs to 

 Ci/primeria ; further Linearia metaslriata, Lin. ? cancellato-sculpta, and L. ? irradians ; the last two 

 and especially the last mentioned will probably be shown to belong to the tapesinje. 



58-72. — Gabb describes in Palaeont. of California, vol. i, pp. 154, &c., and vol. ii, pp. 182 and 

 183, Tell, longa, Remondii, Hoffmanniana, monilifera, ooides, Matheicsonii, deciirtata, ? qtiadrata, 

 As/fburnerii, JFAiinej/ii, (? Sanguinolaria)parilis, Hornii, Californica ; Tell, aqiialis and ? undulifera. 

 All these represent several sub-genera of Tellina, but especially Tcllinella, Homalina, PeroncBoderma, 

 possibly also Phylloda (T. monilifera) and Palceomcera (T. ooides). 



Tell. Bogotina, d^Orb., (Pal. Am. meridionale, pi. xviii, figs. 16-17,) I. have already 

 mentioned has more the character of a Corimya. 



73-74. — T. Largillierfi &nd. Arc. Faldiviana, d'Ovh., (Voy. Astrol. Paleont., pi. v, figs. 5-8). 

 The former appears to be a Tellinella, the other has no radiating strisB, and is, therefore, more pro- 

 bably a TelUnides or Homalina, than a Linearia, with which it also agrees in form. 



To this number probably Tell, allaria, arctata, bilruncata, emacerata, obruta, Oregonensis, and 

 subnasuia from Mr. Conrad's lower eocene rocks have to be added (see Conrad's Check list, &c. ; 

 Smiths. Misc. Coll., No. 200, 1866, pp. 7-8). 



CAPSIN^. 



75. — Capsa texana, Conrad (Emory's report, p. 164). 



76-77. — Asaphis nndulata and miilticostata, Gabb, (Pal. Calif., vol. i, p. 154, and vol. ii, 

 p. 154, &c.) J both have very much the form o? Linearia, especially the last one ; of the first 

 Gabb figures the hinge without lateral teeth. 



Capsa gigantea, Miiller (Monog. der Pet. der Aach, Kreidef. Supplem., 1859, p. 15,) appears 

 to be a Protocardia, 



78-88. — The following species occur in South ludia : Tell. (Tellinella) petrosa, T. (Tellinella) 

 Arcotensis, T. (? Peronceoderma) scitulina ; T. (Per.) primula ; T. (Arcopagia) mendosa, T. (Arcopagia) 

 dlsciles ; T. (TelUnides) adpressa, T. (Palaomcera) inconspicua, T. (? Romalina) undata, T. (Linearia) 

 semisculpta and T. (L.) sculptilis. The species are almost in an equal number distributed over the 

 three geological groups of the cretaceous deposits. Tell. Pondic/ierricnsis, Forb., and two other 

 similar species will be described in the sub-lamily Tapesin^E. 



