1881.] NATURAL SCIENCES OF PHILADELPHIA. 281 



two rows of low transversed pieces ; interpalmar fields paved by 

 somewhat larger and elongate plates. 



Column cylindrical, strong. 



Caj'pocrinus differs from all preceding genera in having a 

 spherical anal plate in line with the first radials, and from Agari- 

 cocrinus in having single arm joints. 



Geological Position^ etc. — From the Upper Silurian of England 

 and Sweden. 



We place here the following species : 



*1S78. Carpocrinus afi&nis Angelin (Pionocr. affinis.) leonogr. Crin. Suec, p. 5, 



PI. 22, fig. 7. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. annulatus Angel. (Habrocr. annulatus.) leonogr. Crin. Suec, p. 4, 



PI. 22, fig. 15. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. cariosolus Angel. (Habrocr. cariosolus.) leonogr. Crin. Suec., p. 



3, PI. 3, figs. 7, 7 a. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. comptus Angel. (Habrocr. comptus.) leonogr. Crin. Sixec., p. 4, 



PI. 22, fig. 13. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr, decadactylus Angel. (Habrocr. decadactylus.) leonogr. Crin. 



Suec., p. 4, PI. 15, figs. 18, 19. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. elongatulus Angel. (Pionocr. elongatulus.) leonogr. Crin. Suec, 



p. 5, PI. 22, figs. 16, 17. Upper Silur. Gothland, Sweden. 

 «1878. Carpocr. farctus Angel. (Pionocr. farctus.) leonogr. Crin. Suec, p. 5, PI. 



16, fig. 23, and PI. 22, figs. 5, 6. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr, grandis Angel. (Habrocr. grandis.) leonogr. Crin. Suec, p. 4, PI. 



26, fig. 10. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. granulatus Angel. (Habrocr. granulatus.) leonogr. Crin. Suec, 



p. 4, PI. 19, figs. 13, 13 a. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. laevis Angel. (Habrocr. Isevis ) leonogr. Crin. Suec, p. 4, PI. l9, 



figs. 21, a, b. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. longimanus Angel. (Harbrocr. longimanus.) leonogr. Crin. Suec, 



p. 4, PI. 22, figs. 11, 12. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. ornatissimus Angelin. (Habrocr. ornatissimus.) leonogr. Crin. 



Suec, p. 4, PI. 6, fig. 9. Upper Silur. Gothland, Sweden. 

 *187S. Carpocr. ornatus Angel. (Habrocr. ornatus.) leonogr. Crin. Suec, p. 4, PI. 



21, figs. 19, 20 and PI. 26, figs. 11, 12 and PI. 27, fig. 5. Upper Silur. Goth- 

 land, Sweden. 

 Figs. 12 a, b, on PI. 26, represent the convoluted digestive organ of this species. 



Its lateral sides are enclosed by a delicate intervisceral network of pentan- 

 gular outline. A similar plexus has been observed in Subcarboniferous 



genera, but always parallel with the walls of the body. 

 *1879. Carpocr. pinnulatus Angel. (Habrocr. pinnulatus.) leonogr. Crin. Suec, 



p. 4, PI. 22, fig. 14. Upper Silur. Gothland, Sweden. 

 This species difi"ers from the typical form by having in two rays an additional 



arm. 

 *1878. Carpocr. pulcbellus Angel. (Pionocr. pulcbellus.) leonogr. Crin. Suec, 



p. 5, pi. 3, figs. 9, 9 a. Upper Silur. Gothland, Sweden. 

 *1878. Carpocr. robustus Angel. (Habrocr. robustus.) leonogr. Crin. Suec, p. 4, 



pi. 22, fig. 19. Upper Silurian. Gothland, Sweden. 



