104 BRACHIOPODA. 



Megath>Tis oblita, D'Orb. 1862, Prod. iii. p. 134. 

 Hab. Mediterranean, on corals, at 60-105 fathoms. 

 Fossil. Miocene. Turin; Gibraltar; Malta. 



Terebratula irregularis, B/ajHc. D. S. iV. liii. 140=? Terebratula 

 ostracea, Blainv.D. S. N. liii. 145, is perhaps a variety. 



** Loop trebly attached. Ismenia. 



2. Megerlia pulchella. 



Shell oval, pointed at the beak, smooth, vfhitish, vnth a few 

 radiating red hues ; margins rather flexuous ; foramen large, in- 

 complete ; deltidia small, separate ; area indistinct ; dorsal valve 

 flattened; loop small, trebly attached. Lon. 3, lat. 2, alt. 1 

 line. 



Terebratula pulchella, G. Sowerby, Thes. Conch, vii. p. 360. pi. 71 . 



f. 105-107. 

 Megerlia pulchella, Dap. Ann. Nat. Hist. 1852, p. 369. 

 Hob. Philippines ; Cocos Island. 



3. Megerlia pectunculus. B.M. 



Shell pentagonal, with seven corresponding ribs to each valve ; 

 ribs unequal, projecting beyond the margin, four large and three 

 intermediate smaller ; both ribs and interspaces ornamented with 

 regular squamose lines of growth ; margins even ; beak short, 

 trimcated by a large foramen ; deltidium incomplete ; loop small, 

 trebly attached. Lon. 6, lat. /, alt. 4 lines. 



Terebratulites pectunculus, Schlotheim, 1820, p. 272. 

 Terebratula pectunculus. Buck, Mem. Soc. Geol. Fr. iii. p. 188. 

 pi. 17.f. 1*. 



Quenst. Handb. p. 466. t. 37. f. 23, 25, 

 Terebratella pectunculus, D'Orb. Prod. i. p. 3/7- 

 Ismenia pectunculus, King, Permian Foss. 81 . 142. 

 Fossil. Oxford Clay. France. 



Coral Raff. Bavaria ; Wurteraburg. 



4. Megerlia lima. B.M. 



Shell orbicular or slightly pentagonal, smooth, or minutely 

 granulated ; dorsal valve nearly flat ; ventral deeply convex ; 

 beak short, recurved ; foramen moderate ; deltidium rurUmentai-y, 

 concealed ; loop rather long, attached to the median septum by 

 crural processes and also by processes from the reflected and ex- 

 panded termination. Lon. 9, lat. 6, alt. 5 lines. 



