BRACHIOI'ODA. 85 



Terebrirostra ncocoiniensis, D'Orb. 1847, Ter. Cr^l. iv. p. 127. 

 t. 5iy. f. 1-5 ; Prod. ii. p. 85. 



P'ossil. Neocomian. Trance. 



101. Waldheimia? lyrata. B.M. 



Shell orl)iciilar, with a pioiiiinciit heak ; valves ronvex, orna- 

 meiiti'd witli niiu' radiatiiiu; riiuiidcd ril)s ; ddrsal valve circular ; 

 beak i)n)diiccd, taperiuj;. tnuicated by a minute forauien ; area 

 trian<;ular, flat, sbarjjly bordered; deltidiuui triaiifi:ular, sunk. 

 Lou. 4, lat. :i\, alt. 2i "lines. 



Terebratula l}Tata, Miinster, 1841, Beitr. iv. p. 57. t. 6. f. 5 c. 



r'ossil. Trias. Tyrol. 



102. WaLDHEIMIA? HUMBOLDTII. B.M. 



Shell obovate, with nine radiatinj; plaits, crossed by a few im- 

 brieatini; lines of growth ; niidtlle ])lait smaller than the next ; 

 (h)rsal valve transverse, de])ressed in the centre, indented in front; 

 beak elongated, tapering, truncated by a small round foramen ; 

 area triangular, flat, sharply bounded ; deltidium narrow, sunk. 

 Lou. , lat. , alt. lines. 



Spirifer lluniboldtii, Klipstein, 1844, Beitr. p. 233. t. 15. f. 17. 

 Terebratula lymta (part.?), Miinst. t. G. f. 5 c, 6? 



Fossil. Trias. Tyrol. 



103. Waldheimia? procerrima. B.M. 



Shell oval, with a long slender beak ; valves ornamented with 

 12-13 radiating ribs; tlorsal valve aurienlate, with a small pro- 

 minent umbo ; central rib small, occupying a slight depression ; 

 hinge-line short and straight ; beak elongated, tapering, curved, 

 truncated by a minute foramen (or three foramina when broken) ; 

 area long and narrow, sharply bounded. Lon. 5, lat. 3, alt. 2^ 

 lines. 



Spirifer procerrimus, Klipstein, 1844, Beitr. p. 233. pi. 15. f. 8. 

 D'Orb. Prod. i. p. 204. 



Fossil. Trias. Tyrol. 



Tribe n. MAGASINA. 



Shell smooth or radiately plaited ; dorsal valve with a longi- 

 tudinal dejiression ; hinge-line straight, or only slightly curved; 

 area usually distinct ; deltidium frequently incomplete ; loop at- 

 tached to the septum of the dorsal valve (fig. 8). 



