

182 F. A. BATIIEU, CRINOIDEA OF GOTLAND. 



Pisocrinus (continued). 



P. pocillum (p. 33). 



Fig. 20. From post. interradius. Djupvik. (p. 34). 

 Fig. 21. Same specimen; from ant. interradius. 

 Fig. 22. Same specimen; from 1. ant. radius. 

 Fig. 23. Specimen figured by ANGBLIN, Tal». IV, fig. 3, 3 a; from post. interradius; showing anals and 

 stem. Djupvik. (pp. 34, 35.) 



Herpetocrinus (p. 36). 



H. Fletcheri (p. 4ö). 



Fig. 24. Specimen a, figured by Angelix, Tab. X, fig. 24; crown and adjacent portion of coiled stem. 



The crown is seen from thc post. interradius. which is its invariable position in coiled fossils: 



1. post. arm slightly restored in accordance with original sketch of author. (pp. 40, 41, 46.) 

 Fig. 25. Same specimen; cup, from post. interradius. The apparent plate at the lower end probably 



rcpiesents one or more enlarged or fused columnals. (p. 41). 

 Fig. 26. Same specimen; cup, from r. post. radius. The right-band portion of tbe cup is eitber ludden 



by matrix or cut away; the structure at tbe top lett-band corner is the anal tube. 

 Fig. 27. Same specimen; platcs of the anal tube, seen from tbe right side, showing eovering-plates. (p. 41). 

 Fig. 28. Same specimen; anal tube, seen from the left side, showing eovering-plates. (p. 41.) 

 Fig. 29. Specimen i; outline sketch, with the six regions of the stem indicated by numbers. (p. 41.) 

 Fig. 30. Same specimen; columnals from region 5. (pp. 41, 42.) 



Fig. 31. Same specimen; diagrammatic section of region 5, with one cirrus-articulation. (p. 42.) 

 Fig. 32. Specimen /; columnals from region 6, showing shorter cirri and some columnals stouter than 



others. (pp. 41, 43.) 

 Fig. 33. Same specimen; transection of region 0, with articulation of two cirri. (Compare Text-tig. 



12 (5); see p. 42). 

 Fig. 34. Specimen j; columnals of region 0, with fine cirri and showing the inner concavity of the 



stem. (p. 42). 

 Fig. 35. Same specimen; transection of region 6, with articulation of two cirri. (p. 42.) 

 Fig. 30. Specimen k; as seen in its natural position on the matrix, on which also lie some columnals, 



probably of the same specimen. The regions of the stem are numbered (ef. Fig. 20, and 



p. 41). The letters a — g indicate the portions enlarged in the ensuing figures. (p. 46.) 

 Fig. 37. Same specimen; thc cup and proximal regions (1 and 2) of stem; from post. interradius. 



(pp. 40, 47.) 

 Fig. 38. Same specimen; the cup from r. post. radius. with region 1 of stem. (p. 41.) 



N. B. Certain difticulties presented by previously known specimens of this species may be 



explained by a Dudlcy specimen in the collection of C Wachsmuth Esq., which I have lately 



been permitted to examine. This new specimen is the only one in which I have been able 



entirely to detach the cup from the matrix. It proves to have only jour radii. This, though 



it may be an individual abnormality, will probably prove to be the case in other specimens 



of the species and perhaps of the genus. 

 Fig. 39. Same specimen; brachials from the side. showing eovering-plates. (Compare with Figs. 27. 



28; p. 47.) 

 Fig. 40. Same specimen; columnals from region 2. 

 Fig. 41. Same specimen; columnals from region 3. 

 Fig. 42. Same specimen; columnals from region 4. 

 Fig. 4.".. Same specimen; columnals from region ■'>. 

 Fig. 41. Same specimen; columnals and cirrals from region C; in this figure the erenelation of thc 



articular suture cannot be seen owing to the weathering of the surface of the stem. 

 Fig. 45. Same specimen; part of stem frpm region 7, in obljque position, showing inner concavitj el 



stem and cirri on both sides. 

 fig. 46. Same specimen; articular surface of eoluinnal at <i (region 2). 

 Fig. 17. Same specimen; articular suiiace of columnal at // (region 2). 

 fig. t*. Same specimen; articular surface of columnal at i (region 6). 

 Fig. 49. Same specimen; third and fourth plates of the anal tube seen from the back. showing median 



ridge and sutural depressions, (p. 41.) 





