KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 25. N:0 2. 93 



upper corner of many of these alpha- and beta-axillaries, which plates are all that are 

 visible of the rest of the axil-arms. The inner armlets, i. e. the main stem of the axil- 

 arms, must have been exceedingly compressed and minute; only with difficulty can there 

 be made out at the broken end of speeimen a one or two verv fine branches. The two 

 lower internodes of each axil-arm are, as in previous speeies, slightly constricted. The 

 ossicles of the thick outer branches are slightly moniliform, and in the branches next the 

 1. ant. arm are raised into rounded crests. 



In none of the arms are sections or articular surfaces clearly shown, and sucli as 

 are seen ])resent no points of interest. 



Ornament: No trace is seen on either speeimen. 



Hinge: The depression is very wide and deep and oceupies more of the radial than 

 of the basa! circlet. Neither speeimen shows more than a faint trace of the cross-proce.^so, 

 and the outline is a simple curve. Such an appearance is presented by no other Gotland 

 speeimen, and it is probably a good specific character. 



Stem not preserved. 



Relations of the speeies. — This speeies is clearly separated from all the pre- 

 ceding speeies by its single primibrach. It is evidentlv out of the line that leads from 

 C. gotlandicus to C. tenax, but is in general appearance more like C. interpres. It inöst 

 resembles the English speeies, typified by a speeimen, formerly in the Gray Collection 

 and now in the British Museum, to which Salteb applied tlie MS. name »C. serialis»; 

 from this, however, it differs in the shape of the dip, in the proportion of its plates, in 

 the less extension of the primaxil, in the lesser size of the inner armlets, and probably 

 !n its hinge. 



Notes on Angelin's figures: 



As the drawings of .specimens a and b were never published, I am spared the 

 trouble of criticising them. It is perhaps needless to say that the illustrations to the 

 present paper are not copied from those drawings. 



Tal). XVI figs. 10 — 14, are seen from the original sketehes to represent one speei- 

 men. This, if at all correctly drawn, should probably be referred to the present speeies; 

 but the original is not to be found v In any case it is clear from the sketehes that the 

 drawings are enormously restored, far more so than the published figures indicate. 



Tab. XVI, tig. 11: the attachinent of the stem to the basals is inconsistenl with 

 fig. 12, and like that of no Calceocrinus. 



Tab. X\ I, tig. 12: the peculiar median line of plates is intended for the stem, 

 while the small figure attached is said to be the »stem from the side»; much of this is 

 probably imaginary, although a longitudinal suture coinbined with irregularity in the 

 plates is not unknown among the earlier Crinoids. 



Tab. XVI, fig. 13 is said in the explanation of the plate to represent »assuhe radi- 

 ales et axillares»; for this, however, there is no warrant in the MS., and I incline to think 

 that the figure shows the hinge, with the ant., 1. ant. and 1. post. radials above, and with 



