F. A. Bather — The Search for Uintacrinus. 443 



nevertheless have been present, for in the living Sepia officinalis 

 " the tentacular arms remain contracted within the others when in 

 repose." : The two dorsal arms are about 70 mm. long and 6 mm. 

 wide at their base; for a short distance they taper rather rapidly, 

 tlien much more gradually to their extremities. The next pair is 

 a little longer and a little more robust. The third pair is about 

 the same as the first, and the fourth or ventral pair a little shorter 

 and less robust thau the first. A marked irregularity in the outline 

 of the inner surface of the arms is doubtless due to the presence of 

 small acetabula or " suckers," but there are no indications of hooks. 

 The first and second arms on either side seem to have been united 

 for some short extent (perhaps one-third of their length) by a web- 

 like membrane, which probably also connected some of the other 

 arms, but this appears not to have united the bases of the two 

 dorsal arms. 



Dr. A. Wagner, in his memoir already alluded to, groups all the 

 examples of Coccoteuthis which have been described from the Litho- 

 graphic Stone into one species, viz. G. hastiformis, recognizing 

 amongst them three varieties — (i) var. minor, (ii) var. media, and 

 (iii) var. maxima. Fortunately in the specimen described above, the 

 shell is preserved so that it can be readily compared with the species 

 which have already been described. It is referable to Wagner's var. 

 minor. 



EXPLANATION OF PLATE XIV. 



Sit. The first (dorsal) and second arras of the right side, showing acetabula or 



" suckers " on their inner surfaces. 

 u. Membrane uuiting the bases of the first (dorsal) and second arras on either side. 

 b. Impression of beak or mandible. 



e. Probable position of eye. 



s. Anterior extremity of shell. 



m. Portion of mantle, exhibiting wrinkles and traces of colour. 



f. Anterior boundary of lateral fin on either side. 

 f . Posterior boundary of same. 



Slightly reduced from the original. 



IV. — The Search fob Uintacrinus in England and Westphalia. 



By F. A. Bather, M.A., 

 Assistant in the British Museum (Natural History). 



IT is just a score of years since the unstalked crinoid Uintacrinus 

 was discovered, almost simultaneously, in the Niobrara Chalk of 

 Kansas and the Lower Senonian of Westphalia. The American 

 specimens were described by Grinnell and Meek, while the single 

 European specimen was exhaustively discussed by Schlueter. Of 

 recent years further specimens, in a better state of preservation, 

 have been found in Kansas, and a slab purchased by the British 

 Museum enabled me to make a more detailed study, the results of 

 which were published in the Proceedings of the Zoological Society 

 (vol. 1893, pp. 974-1004, pis. liv-lvi, April, 1896). But as to 



1 Tryon, "Manual of Conchology," vol. i, 1879, p. 58. 



