336 MM. Munier-Ohalmas and Schlumberger on the 



"cinq bras beaucoup moins larges que les radiales " are in 



the same condition. 



He notes the absence of pinnules in his examples of Demo- 

 crinus ; but unless they have more than six or eight single 

 brachials (= three or four syzygial pairs) this would be 

 nothing remarkable. In R. lofotensis the first pinnule-bearing 

 joint is the eighth from the radial, i. e. the epizygal of the 

 fourth brachial j while in R. Rawsoni it is sometimes this 

 and sometimes the epizygal of the third brachial which bears 

 the first pinnule. Unless therefore the u restes trfes courts ' of 

 the arms of Democrinus have more than these three or four 

 syzygial joints, I should not expect them to bear pinnules. 



Thus, then, 



rfc 



thing more than a somewhat elongated variety of Rhizocnnus 

 Rawsoni. As pointed out elsewhere *, this species has been 

 dredged among the Azores and in the north-west portion of 

 the Bay of Biscay ; so that its discovery off the Morocco coast 

 is a point of some interest. 



M. Perrier describes Democrinus Parfaiti as the fifteenth 

 known living species of stalked Crinoids. His list comprises 

 the eight species of Pentacrinus which are noticed in " The 

 Stalked Crinoids of the Caribbean Sea," together with the 

 two species of Rhizocrinus, two of Bathycrinus (B. gracilis 

 and B. aldrichianas) , one each of Hyocrinus and Holopus, 

 and, finally, Hyponome Sarsii, Loven. For this last, however, 

 the name of Bathycrinus Carpenteri {Ilycri?ius y Danielssen 

 and Koren) should be substituted. Hyponome has long been 

 disestablished as a genus f ; for it is merely the isolated disk 

 of a Comatula. and in no way related to the stalked Crinoids. 



be 



W 



XUV. 



yf 



mint/era. By MM. MuNIER-CHALMAS and SCHLUM- 

 BERGER J. 



One of us demonstrated in 1880 § that in Nummulites and 

 Assilina each species was represented by two forms , which are 

 still regarded, wrongly, as distinct species. Since that time 



* Bull. Mus. Comp. Zool. vol. x. no. 4, p. 174. 



t Quart. Journ. Micr. Sci. 1879, vol. xix. new ser. p. 205, and Proc. 

 Roy. Soc. no. 194, 1879, p. 8 *. 



t Translated by \Y. S.Dallas, F.L.S., from the 'Comptea Rendus/ 

 March 20, 1883, p. 802. 



§ Bull. Soc. Geol. de France, 3 e sSrie, tome viii. p. 300. 



