28 HINDE, ANNELID REMAINS FROM SILURIAN OF GOTLAND. 



Fig. 43. The same. Under surface, showing tbe aperture for thg 

 insertion of the muscle. 

 » 44. The same. Pincer of the left side; upper surface. 



2 45. Arabellites fastigiatus, H. Pincer of the right side. 



> 46. Arabellites contractus, H. Pincer of the left side, upper surface. 

 1 46 a. The same. Under surface. 



47. Arabellites spicatus, H. Pincer of the right side, upper ffurface. 



48. The same. Under surface. 

 ■' 49. The same. Upper surface. 



50. Arabellites anglicus, H. Large dental plate of the left side; 



upper surface. 

 1' 50 a. The same. Under surface. 



51. The same. Large dental plate of the left side ; upper surface. , 



52. Arabellites arcuatus, H. Dental plate of the right side ; upper 



surface. 

 52 a. The same. Under surface. 

 " 53. Arabellites angustus, H. Secondary dental plate of the left 



side; upper surface. 



Plate III. 



Fig. 54. Arabellites concinnus, H. Secondary dental plate of the 

 right side; upper surface. 

 * 55. Arabellites ferox, H. Secondary dental plate of the left 



side; upper surface. 



> 55 a. The same, Under surface. 



i 56. The same, var. a. Ujiper surface. 



57. The same, var. b. Upper surface. 



58. The same var. c. Upper surface. 



1 59 — 63. Arabellites uncinatus, H. Distal jaw plates. 



i 64. Lumbriconereites obliquus, EiCHWALD, sp. Large dental plate 



of the left side; upper surface. 

 » 65. The same. Large dental plate of the right side; upper 



surface. 

 » 66. The same. Under surface. 



67. The same. Left dental plate; under surface. 

 ■i 68, 69. Lumbriconereites perdentatus, H. Large dental plates of the 



right side; upper surface. 

 i 70, 71. The same. Dental plates of the left side; upper surface. 

 » 72. Lumbriconereites spatiosus, H. Large dental plate of the 



left side ; upper surface. 

 » 73. The same. Right dental plate; upper surface. 



» 73 a. The same. Under surface. 



> 74. Lumbriconereites falciformis, H. var. a. Secondary dental 



plate of the right side; upper surface. 

 » 75. The same, var a. Right dental plate; upper surface. 



» 76. The same, var. b. Rigbt dental plate; upper surface. 



> 77. The same, var. c. Right dental plate; upper surface. 



