68 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I44 



Periproct. — Supramarginal, in contact with apical system, elongate 

 longitudinally, in deep groove extending from apical system to 

 margin. 



Peristome. — Central or slightly anterior of center, wider than high, 

 pentagonal. 



Floscelle. — Bourrelets present; phyllodes well developed, slightly 

 broadened, long, double pored (text fig. 50), with approximately 

 15 pore pairs in each outer series, 8 to 10 in inner series; no buccal 

 pores. 



Tub ere Illation. — Adorally tubercles approximately same as adapi- 

 cally. 



Occurrence. — Jurassic (Rauracian) at Andryes, Mery-sur-Yonne ; 

 Saint-Martin sur Armancon. Yonne, and Valfin, Jura, France. 



Location of type specimen. — Not known. 



Synonym of PSEUDOSORELLA 



Neoclypens De Loriol, 1901. Notes pour servir a I'etude des echinodermes, 

 vol. 9, pp. 33-34. Type species by monotypy, Neoclypeus syriacus de Loriol. 



DESCRIPTION OF TYPE SPECIES 



PSEUDOSORELLA 6YRIACA (De Loriol) 

 Plate 10, figures 3-4; text figure 51 

 Neoclypeus syriacus De Loriol, op. cit., pp. 34, 35, pi. 2, fig. 27. 



Material. — There are two specimens of this species in the De Loriol 

 Collection. One of them, the specimen figured by De Loriol, is herein 

 designated as the lectotype and figured on my plate 10, figures 3, 4. 

 Although fractured, this specimen and the second specimen show 

 most of the features of the species except for the apical system. 



Shape. — Medium size, broad, margin rounded, of mediimi height ; 

 adorally, ambulacra depressed, interambulacra slightly inflated. 



Apical system. — Central, or slightly anterior, further details not 

 visible, but from age presumably tetrabasal. 



Ambulacra. — Petals broad, straight, long, extending almost to 

 margin, open, with slight tendency to close distally; interporiferous 

 zones very wide, poriferous zones narrow, with width of poriferous 

 zones decreasing distally ; pores strongly conjugate, outer pore slit- 

 like, inner pore round. 



Periproct. — Supramarginal, in contact with apical system, elongate 

 longitudinally, in deep groove extending from apical system to 

 margin. 



