400 . Dr. F. A. Bather on 



C. elojiffatuS' Goldfuss and C. hieroglyphicus Scliultze, both 

 from the Middle Devonian of the Eifel. Their remains 

 have the same dark colour. Of these two, C. elovgatus 

 approaches C. toxvnsendi more closely in both the ornament 

 and the proportions of the brachials ; indeed, it is only in the 

 latter feature that distinguishing characters can be detected. 

 Comparison may be made ^vith a uell-preserved specimen 

 of C. elongatus from Dachsbero-, Gerolstein, now in the 

 British Museum [E. 15471]. The arms of this specimen 

 attain a length of 117 mm. and are composed of about 20 

 brachials, counting the articularia as Bri. The following 

 are comparative measurements in millimetres : — 



C. ehnyatus. C. townsendi. 



Widtli of Eri 2->-5 to 247, Mean 23-G 26 



Height of Br., 77 73 8 



Eatio, height : width, Bi-o. 2 9 .3-.38, „ Hi 3-25 



Height of Br3 9-4 86 9-6 



Width „ 18-8 18-3 24-4 



Katio, height : width, Br3. 2 2-1 2-5 



Height of Bra 6 6-1 4-8 



Width „ irvl 15 18-4 



Katio „ 2-5 2-45 3-8 



Height of d, 4-3 5 



AVidth „ 8-2 . 10 



Eatio „ 1-9 2 



It follows from these measurements that the relative 

 -width of the brachials is throughout greater in C. townsendi, 

 the difference being pronounced in all brachials except those 

 at the proximal and distal ends. Other difterences are the 

 greater straightness of the suture-line, the sharper angle of 

 the dorsal ridge, and the projection of Bra beyond Brj in 

 C. townsendi. In C. elongatus the arms aie constricted in 

 the upper part of Brg. 



The species Cup,''- .crinus townsendi must therefore be 

 maintained, with the following diagnosis : — 



A Cupressocrinus of dark colour (in the fossil) ; with 

 ornament of anastomosing rugae ; in which the brachials of 

 the middle tract of the arm may attain a ratio of height : 

 width : : 1 : 3-8, and have almost straight slopes, meeting in 

 a slightly rounded dorsal ridge. 



Locality. Konigsaysno more than " Hispania,'^ and there 

 is no other direct evidence. Some inference may, however, 

 be based on the writings of the finder. 



Joseph Townscnd (1739-1816), F.G.S., Fellow of Clare 

 Hall, Cambridge, where he took his B.A. degree in 176,2, 



