A MONOGRAPH OF THE EXISTING CRINOIDS 77 



Later he said that by the low median dorsal carination of the arms this species 

 approaches Chondrometra rugosa and Glyptometra tuberosa. From the species first 



r \SZS^. 2*5K^~ * dtffe, ^^tttS 

 m having more cirrus segments which are provided, besides, with small but distinct 

 dortl spin" by smoother arm bases, by P> having much fewer segments, and by the 



Smal The Si de S cription of the cirri and of the relation between P, and P 2 show that these 



corresponding size. . ,, Thp C entrodorsal is conical, 



Gislen described Penssometra carmata as follows, liie cenirouo 

 3 mm broad at the base and 3 mm. high, with distinct interrachal crests. The cirrus 



^^^rliV'o-llTbout 15 mm. long. The fourth segment is slightly 



(.xill.ries) are three times a, broad as tag, P™ t.gou.l, « h . n £d = * 



continues dorsally out to the distal portion of the arms winch is ,s l J P 



distal ends. (between brachials 3 + 4) is replaced by a 



In three cases out of ten the rn*»t syzygy k ohliaue muscular articulations. 



is 4 4 mm. long with 11-12 segments. P 6 is 3.2 mm. lon B wiui g 

 pinnules are 6.2 mm. long with about 16 segments. 



The disk has been lost. , , d j 2 mm . 



In another specimen the centrodorsa is ^ T^J ,- a t,- m in the speci- 

 high. The cirri are partly broken. The dorsa P ^on » ^ . «, ^ 



