47 



Eccyliopterus, Remele. 



Eceyliopterus abendanoni Frech. 



PL XIX., Fig. 7a-b. 



191 [. Raphisioma (^Eccyliopterus) abendanoni Fkech : Richthofen's 

 China vol. V.,p. 12, pi. III., figs, i a-d. 



Frech founded this species on two specimens which are figured in 

 " China," vol. V. The smaller specimen (fig. i b.), 37 mm. in diameter 

 " shows an evolute shell composed of few volutions ; the whorles are trigonal 

 in cross section, with the outer side slightly conve.x and the upper and lower 

 sides slightly concave. As the latter two meet in an acute inner border, 

 the shell would probably appear hke the annexed figure in cross section. 



Among the fossils from Tung-hu-hsien, there is a specimen, which, 

 though murh damaged in extraction from the hard matrix, is hardly 



the test. In the former, the fine, but very distinct striae run almost ver- 

 tically on the outer side of the shell, being never so conspicuously flexuous as 

 those shown in Frech's fig. I d. It is, therefore, only provisional that the 

 present specimen is now called 11. abcndanotii. 



Further, there is also some doubt about its generic position ; according 

 to Koken, Fxcylioptcrus of Remele comprises the shells showing the follow- 

 ing features : 



" Gehause rechts gewunden, evolut, eine offene Spirale bildend. Win- 

 dungen dreiseitig, die Winkel zwischen Apical-und Extern-Seite zu einem 

 kragenformigen Gebilde ausgezogen. 



Die Sculptur besteht in fadenformigen, ungleichen Rippen, welche 

 scharf nach riickwarts geschwungen, auf dem Kragen aber wieder steil auf- 

 gerichtet sind. 



Der Kragen besteht aus einner Doppellamelle der iiusseren Schalen- 



Cross-section. 



I/I. 



distinguishable from the smaller specimen of Fkeck 

 cited above ; the present spcciinen, however, shows 

 not a little difference from the larger one of Frech 

 in the course of the sharp striae on the surface of 



