176 



Dimensions : — 



Length. Width. Thickness. 



7.5 mm. 8 mm. 5.5 mm. 



8 „ 9 „ 6 



10 „ 12 „ 8 „ 



14 .. 15 10 



16 „ 19 „ 13 



Localities : — Three places between Mien-tien and Sliang-shui-tang, Nan- 

 ning-hsien, Nan-ning-fu, prov. Kwang-hsi. This species seems to be very 

 abundant in these locaHties ; for there is a piece of a dark grayish limestone 

 of a moderate size which is, so to say, a heap of a large number of the species 

 cemented by the limestone. Several other fossils have been collected in as- 

 sociation with this species in these localities ; they are 



Dalvianclla striata la 



Spirifer zicsac var. iindccimplicnt^ts 



AtJiyrisiiin minor. 



Geological Age : — Middle Devonian. According to H. Loewe this 

 species " tritt bereits im tiefen Unterdevon auf und geht durch das Mittel- 

 und Oberdevon hindurch, wo sie sehr hiiufig ist.^* " But the associate fossils 

 v^ery likely represent the Middle Devonian age. 



Athyrisina, nov. gen. 

 Among various kinds of of Brachiopods from the Palaeozoic Formations 

 of China there are three Athyroid forms rather closely related to one another, 

 but having no identical genus among the hitherto known forms. The shell is 

 ornamented with coarse radial ribs and is provided with a median sinus and 

 fold in the ventral and dorsal valves respectively. A circular pedicle hole 

 truncates the more or less strongly recurved ventral beak. There is no car- 

 dinal area in either of the valves. At -first sight this fossil is liable to be 



i) H. Loewe : — Die nordischen Devongeschiebe Deutschlands. Neues Jahrb., Btil.-Bd., 

 35> P- 57- As to the species described by this author as Spirigera cotKenirka, however, the 

 writer cannot regard it as surely identified, because the figure given is by no means a 

 good one. 



