Br. M. Remes — On Psalidocrinus strambergensis. 347 



new genus, it is true, resembles Apsidocrinus in the union of its 

 interradial processes, which form a kind of vault above the patinal 

 cavity (Jaekel, 1907, p. 304; Eemes, 1912, pp. 163, 168), but it 

 differs from that genus in the fprm of the interradial processes, and 

 especially in the size and shape of the radial facets. 



Description of the Specimens. — (A) Holotype of Eugeniacrinites 

 stramhergensis (Text-figs. 6-8). The measurements of the patina are : 

 height, circa 8 mm. [incomplete]; diameter at base, circa 5mm.; 

 diameter at upper margin, circa 12 mm. In the lower half the sides 

 of the patina ascend almost vertically, but spread outwards rapidly in 

 the upper half, till the level of the radial facets is reached. _ The 

 interradial processes, of which two are partially preserved in this 

 specimen, then ascend almost vertically, but with a slight inward 

 bend, for a short distance. Their broken surfaces then bend rather 

 sharply towards the oral pole, at the same time spreading out above 

 the radial facets and then ending in a point, so that the outline of 

 the whole cross-section somewhat resembles that of a spade in 

 playing-cards (Text-fig. 6). The radial facets (Text-figs. 7, 8) are 

 large and wide, with deep muscle-fossse. In the upper part of the 

 patina, wherever preserved, the^nte^2?Tadial sutures are distinctly 

 depressed. The patinal cavity is spaci.. is. It was the resemblance 

 of the patina and of the radial facets to those of Eugeniacrinites which 

 caused me formerly to refer the specimen to that genus, and to 

 compare it with E. arniattis, Zittel, and E. alpinus, Ooster. 



(B) Second specimen (Text-figs. 1-5). This also is a patina, and 

 has the following measurements : height, from stem-fncet to summit 

 of interradial processes, 17 mm.; diameter at stem-facet, 4*8 mm. ; 

 diameter at level of radial facets, 16-4 mm. In external form this 

 specimen resembles the holotype, except that the interradial processes 

 are better preserved, one of them being almost complete. From this 

 one we may infer that they were large and wide at their proximal 

 'ends, but thinner above. About the middle of their height they 

 spread out on each side into a wing-like process. The interradial 

 sutures are distinctly and deeply depressed, starting from about 

 half-way up the patina. Eadial facets (Text-figs. 3, 4) large, deeply 

 notched ; they stretch almost half-way up the interradial processes. 

 On them may be observed a ligament surface, ligament fossa, axial 

 canal, and the transversely elongate muscle-fossae and articular fossae. 



In both specimens the external surface of the patina is smooth, 

 with no distinct trace of any sculpture. 



Diagnosis of Psalidocrinus (-yJraXis, -xlraXi'Sos, a vaulted chamber; 

 the name marks the resemblance to Apsidocrinus). — Patina 

 resembling that of Eugeniacrinites in external form, with stem-facet 

 sometimes excavate, sometimes level, having a star-shaped mark 

 round the lumen ; interradial processes well developed, coalescing in 

 their upper part to form a vault over the patinal cavity, large at the 

 bottom, tapering towards the top, marked externally in their lower 

 part by deeply depressed interradial sutures; radial facets large, 

 reaching half-way up the interradial processes. 



Genotype. — The evidence for this genus is presented by specimen B, 

 which I believe to belong to Eugeniacrinites stramhergensis. But 



