ISO 



what flattened at the bottom. It is from the begining vfery distinctly defined,-, 

 and its width increases very rapidly toward the anterior margin where th& 

 sinus stretches out like a tongue. Corresponding tcv this sinus there is a folcb 

 along the median line of the dorsal valve. The fold also is very clearlyi 

 separated from the lateral portion of the valve even at the extremity of the 

 beak. Along the median line of the siniial folding there is a very slight, 

 flattened or concave line, which is especially well .exhibited, at the marginal i 

 portion of the dorsal valve. Length of the area is more than three times its 

 height. Thus the outline is somewhat lyrate. 

 Dimensions : — 



Length. Width. Thickness. Height of Area. Hinge-line. 



23 mm. 32 mm. 20 mm. ca. 9 mm: ca; 30 mm. 



28 „ 36 „ 22 „ ca. II. ,y 36 „ 



24 » 32 » ,r ■ 9 » 30 



(Locality unknown). 



Locality: — Neighbourhood of Ling-ling, Yung-chou^fu, prov. Hu-nan. 



Geological Age : — Upper Devonian. This species is a very widely dis- 

 tributed one, and has been recorded from various part of the word, as for 

 instance, Germany, Belgium, England, Spain, Russia, Persia, North America, 

 Hindu-Khoosh and New South Wales. 



III. Spirifer disjunctus var. -verneuili Murchisov. 

 PI. XXIV., Figs. 2. 

 1882. Spirifer vcrneiiili, Kayser (pars) : — op. cit., figs. 31-m. 

 1S94. Spirifer verneiiili, Gosselet (pars) :— op. cit., figs. 15, 20, 23, 58. 

 1913. Spirifer disjiinctiis var. vcrneiiili, Pellizzari : — loc. cit. 



The shell rather transverse, with its maximum breadth along the hinge-. - 

 line ; cardinal extremities prolonged into wings. Anterior border somewhat, 

 parallel to the hinge-line, thus showing trapezoidal outline, especially when- 

 viewed from the dorsal side. The shell is moderately swollen, but not , 

 globular. The beak is somewhat acutely pointed but upright and not-' 

 curved over the area beneath. The latter is triangular and very much longer . 



