216 DR. T. DAVIDSON ON EECENT BRACHIOPODA, 



be reo'arded as an Australian form of Lingula anatina or as a distinct species, it is 

 certain that the differences are obvious and constant. The late Capt. Phillip King, who 

 was an excellent conchologist (witness his paper on the collections of his exploring 

 voyage in the ' Zoological Journal'), Avas struck by the peculiarities of this Lingula, and 

 sent specimens home to Mr. Cuming with the above name. More have been collected 

 bv Mr. Strange in nearly the same locality, and all are distinguished from L. anatina, 

 collected abundantly by Mr. Cuming in tlie Bay of Manilla, by a more square outline 

 and a peculiarly coppery-red tone of colour." 



The shell of L. Murpliiana seems to attain to larger dimensions than that of L. anatina, 

 and the structvire of the animal would differ, if I am correct iu ray belief that Albany 

 Hancock described that of L. M^irphiana by the name of anatina (in the Trans, of the 

 Royal Society, vol. cxlviii. pi. Ixiv. and ])1. Ixv. figs. 1 and 2, 1858). The shell is wider in 

 comparison to its length, thicker, and differs in colour. The anatomy of LiuQula having 

 been noted under L. anatina need not be here repeated. 



117. Lingula tumibula, Eeeve. (Plate XXVIII. figs. 14, 15.) 



Lingula tuinichila, L. Reeve, Proe. Zool. Soc. 1841, part ix. p. 100. 



Linijala compressa, L. Reeve, Proc. Zool. Soc. 1841, part ix. p. 100. 



Lingula tumidula, G. B. Sowerby, Thes. Conch., Monogr. of Lingula, vol. i. p. 393, pi. Ixvii. fig. 7, 1846. 



Lingula tumida, Davidson, Ann. & Mag. Nat. Hist. 2nd ser. vol. ix. p. 377, 1852. 



Lingula tumidula and L. compressa, L. Reeve, Concli. Icon., Monogr. oi Lingula, pi. i. fig. 2, 1859; 

 E. Sness, Ueber die Wohnsitze der Bracliiopoden, Sitzungsb. k. Akad. Wissenscli. Wien, Bd. xxxvii. 

 p. 47, 1859 ; Dall, Proe. Acad. Nat. Sci. Philadelphia, p. 204, 1873. 



Shell large, horny, thin, squarely oblong, slightly attenuated at and towards the beaks ; 

 umbones indistinct ; sides subparallcl, nearly straight in front, with a small angular 

 projection in the middle ; valves closed on each side. Colour coppery brown or reddish 

 olive, sometimes bright green near the posterior margin. Surface smooth, marked with 

 concentric lines of growth. Length 2 inches 2 lines, l)readth 1 inch 5 lines. 



Hab. Island of Masbate, Philippines (Cuming) ; Moreton Bay, Australia (Strange). 



Obs. This is the largest and finest recent species of the genus with which we are at 

 present acquainted, and is broader in proportion than any other known recent form. As 

 stated by L. Reeve in his description of the species, the variety compressa, which he 

 regarded in 184-1 as a distinct species, was only a badly preserved specimen resulting 

 from the mode of drying, which had been collected by Mr. Cuming in sandy mud and 

 low water at Palanas, Isle of Masbate, one of the Philippines. The Lingula from Japanese 

 waters, referred by Mr. A. Adams and myself to L. timiidula, was afterwards found to 

 differ from Reeve's species, and subsequently received from Mr. W. H. Dall the specific 

 name of L. Adamsi (see p. 218 of this Monograph, PI. XXVIII. fig. 19). Lingula tumi- 

 dula seems to be nearly allied to Lingula Ilurphiana, which is longer in proportion to its 

 breadth. I have not seen good interiors of the valves of L. tumidula. 



118. Lingula hians, Swainson. (Plate XXIX. figs. 12, 13.) 



Lingula hians, Swainson, The Phil. Mag. and Journal, vol. Ixii. p. 401, 1823. 

 ? Lingula anatoni, KUster, ed. Chemnitz, Conch. -Cab. p. 14, pi. i. figs. 7-9, 1843. 



