398 Br. 0. A. L. Morch — On the Crag of Iceland. 



ACEPHALA, 



30. Teredo, sp,, tube about 9 mm. in diameter. In a fossil piece of 

 wood. Paykull indicates exactly the layer in which it is found, 

 p. 42. d. 



31. Solen siliqua, L. ? 



In the Spenglerian collection is found a fragment 27 mm. long, 

 and 14 mm. high. 



32. Solen ensis, L. minor, Nyst, I.e., tab. 1, fig. 4. 



In the same collection a fragment 18 mm. long, 7^ mm. high. 



33. Cyrtodaria siliqua, Spgl. 



Glycimeris angusta, Nyst, p. 55, tab. 11, fig. \a. (Winkler). 

 Well preserved, often with the ligament. 

 *34. Cyrtodaria Heerii, Winkler, I.e. p. 208. 



According to a sketch by Dr. Winkler, this species is established 

 lapon a rather incomplete specimen. It is 45 mm. long, and 

 19 mm. high, under the umbo only 13 mm. It looks to me 

 very like Cyrtodaria angusta, Nyst. 

 *35. Saxicava [Panomya) Norvegica, Spgl. 

 Fanopcea Norvegica, Spgl. Winkler, I.e. p. 208. 



36. Corbulomya complanata, Sowb. 



Corhula complanata, Sowb., M.C., p. 86, tab. 362, fig. 7, vix 8. 

 Corbulomya complanata, Nyst, Coq. Foss., p. 59, tab. 2, fig. 2 (Winkl.). 

 Corbula complanata, Bronn. Leth. T., 11, p. 69, tab. 37, fig. 8. 

 Corbulomya complanata, Morcb, Payk. 

 Several specimens exceedingly thick in the shell, 23f mm. long, 

 13 mm. alt. 



37. Corhulomya WinMeri, Morch. 



Corbulomya complanata, Winkler, p. 206, non Sowb. 

 Corbulomya, sp. Morch, Payk. 

 Testa tenuis postice angustata juxta umbones oohracea. Long. 

 29 mm., alt. 15 mm. 



38. Corbulomya, sp. ? var. Abhreviata prcecedentis ? 



39. My a arenaria, L. 



Mya arenaria, L., Winkler, p. 205, Mbrcb, Payk. 

 Eather common, Winkler, Paykull. 

 The largest is 72 mm. in length, 40 mm. high. 



40. Mya truncata, L. 



Paykull. One specimen 70 mm. long, 48 mm. high. 



41. Mactra (Spisida) procrassa, S. Wood. 



Mactroe solidcB, aff., Morch, Payk. 

 42 mm. long, 35 mm. alt. 



Cyprina Islandica, var. without lunula or area. Winkler, p. 201, 

 belongs perhaps to this. 



42. Mactra (Spisida) arcuata, Sowb., 1817, tab. 168, fig. 1. Long. 



55 mm. ; alt. 43 mm. 



43. Mactra {Trigonella) , sp. 



Mactra stuliorum, L., S. Wood? Morch, Payk. 

 This species closely resembles Cardium Groenlandicum, Chem, ; it 

 is however easily distinguished by the want of the impressed 

 lines outside for the reception of the ligament. 



44. Tellina (Macoma) obliqua, Sowb., M.C., tab. 161, fig. 1. 



Tellina obliqua, Nyst, p. 107, tab. 15, fig. 2. 

 Tellina ovata, Sowb., Winkler, p. 203, Morch, Payk. 



