REPORT ON THE BRACHIOPODA. 53 



Woods kindly sent me specimens of the shell, both white and coloured, from near Bird's 

 Island, North Australia. A. Adams obtained it near Japan, and M. Emile Deplanche 

 (bedged it in 1859 not far from the coast of Tahiti. It was likewise recently got off 

 Phare, New Caledonia. 



Ohservations. — In 1846 Mr G. Sowerby (Thesaurus Conchyliorum, parts 6 and 7, p. 

 357) noticed the triply-attached condition of the loop, for he says: "The internal 

 appendages at first form two rays, then a central ring and two lateral loops, and at length 

 a reflected dorsal loop united to a central ring." This description seems, however, 

 somewhat difficult to understand, and he seems not to have observed that two of the 

 three attachments are made to a short longitudinal septum. In 1871 I gave enlarged, 

 and I believe correct, figures of the loop of this species in my paper On Japanese Eecent 

 Brachiopoda {Proc. Zool. Soc. of London, pi. xxxi. fig. 2, a), and did not fail to 

 mention (p. 308) that " Mr Dall is of opinion that there is no difference in the interior of 

 Megerlia sanguinea and Megerlia truncata, except that the lateral lobes are open instead 

 of closed in Megerlia truncata, and that this and the external shape of the shell may 

 perhaps serve as characters for the creation of a sub-section. The same internal arrange- 

 ments take place in Megerlia jeffreyd, Megerlia reevii, Adams, and this last is in aU 

 probability nothing more than a bleached example or variety of the shell under descrip- 

 tion."^ In his monograph Mr Reeves states that Sowerby's Terehratula pulchella is 

 merely a variety of the old Anomia sanguinea of Chemnitz. 



Kraussina, Davidson. 

 Kraussina lamarchiana, Dav. (PL IV. fig. 9). 



Kraussina lamarchiana, Dav., Ann. and Mag. of Nat. Hist., vol. ix. p. 370, 1852, and Proc. Zool. 



Soc, pi. xiv. figs. 22, 23, 1852. Chem., Manuel de Conchy]., vol. ii. p. 206, 1857. 

 Kraussina lamarchiana, Dav., Ann. and Mag. Nat. Hist., p. 31, 1861. 

 Kraussina lamarchiana, DaU, Am. Journ. of Conch., vol. vi., part 2, p. 139, 1870, and Proc. 



Phil. Acad. Nat. Sciences, p. 190, 1873. 



Shell small, somewhat tetragonal, about as wide as long, yellow or light brown. 

 Dorsal valve slightly convex, with a rather deep longitudinal mesial depression. Hinge- 

 line nearly straight and rounded at its angles. Ventral valve deeper and more convex 

 than the dorsal one, longitudinally keeled along the middle. Beak slightly incurved and 

 truncated by a large incomplete foramen, laterally margined by two rudimentary 

 deltidial plates ; beak-ridges sharply defined, leaving a flat areal space between them and 

 the hinge-line. Surface of both valves ornamented by a number of small radiating costse, 



^ Herr Friele is mistaken when stating at p. 384 of his excellent paper On the Development of the Skeleton in the 

 Genus Waldheimia, that I _ consider Megerlia jeffreyd to he the young of Megerlia sangidnea. I have always 

 considered them to he distinct species ; hut I said both agreed in the character of the loop. 



