220 DR. T. DAVIDSON ON EECENT BEACHIOPODA. 



Uncertain Species. 



123. LiNGULA SMARAGDiNA, A. Adams. (Plate XXVIII. fig. 25.) 



Lingula smaragdina, A. Adams, Ann. & Mag. Nat. Hist. 3rd ser. vol. xi. p. 101, 1863 ; Davidson, 

 Proc. Zool. See. 1871, p. 310, pi. xxx. fig. 2 ; Dall, Proc. Acad. Nat. Sci. Philadelphia, p. 203, 1873. 



Shell oblong oval, longer than wide ; sides subparallel ; front margin almost straight, 

 obtusely angiilar posteriorly at the beaks ; valves very moderately convex, smooth, bright 

 green, whitish in the middle and near the beaks ; length of peduncle not known. Length 

 of shell 10 lines, breadth 4 lines, some specimens somewhat exceeding those dimensions. 



Hah. Yobuko, 10 fathoms, mud, Japan, also in China seas (Adams). 



Ohs. This species (?) was described, but not figured, by Adams in 1863. In 1871 I 

 figured the shell from Mr. Adams's type ; he adds to his description " a bright green 

 species, found also in the China seas, and most nearly resembling L. hiriindo, Eeeve." I 

 have seen so little of this species (?) that I cannot feel certain as to its specific claims. It 

 bears much resemblance to some young examples of Lingida anatina. 



124. LiNGTJLA HiRUNDO, Reeve. (Plate XXVIII. fig. 22.) 



Lingula, Idrundo, L. Reeve, Conch. Icon., Monogr. of Lingula, pi. ii. fig. 7, 1859 ; Dall, Proc. Acad. 

 Nat. Sci. Philadelphia, p. 203, 1873. 



" Shell oblong-square, thin, greenish, posteriorly abruptly attenuated ; umbones rather 

 sharp. Length 11, breadth 4^ lines. 



" Hah. Port Curtis, North-east Australia (Stutchbury.) 



" Several specimens of this little semitransparent species were collected by Mr. 

 Stutchbury at the above-named locality." 



Ohs. As I know nothing more respecting the specific claims of this so-termed species, I 

 can only reproduce the statements Mr. L. Peeve has published with respect to his 

 species. 



125. Lingula lepidtjla, A. Adams. (Plate XXVIII. fig. 16.) 



Lingida lepidnla, A. Adams, Ann. & Mag. Nat. Hist. 3rd ser. vol. xi. p. 101, 18G3; Davidson, Proc. 

 Zool. Soc. 1871, p. 311, pi. xxx. fig. 4; Lischke, Japauische Mceres-Concbylien, Snppl. iv. p. 1G3, 1884. 



Shell small, oval, longer than wide, tapering a good deal at the beaks; sides and 

 front gently rounded. Colour yellowish, slightly tinted with red. Length 4 lines, 

 breadth 2 lines. 



Ifab. Seto-Uchi (Akasi), Japan, 10 fathoms, mvid (Adams). 



Ohs. Mr. Adams did not figure his species, but he sent mc his type in 1871, and I 

 figured it in the Proc. of the Zool. Soc. for that year. Mr. Adams adds to his description 

 " that it is a species as small as i. semen and shaped like L. ovalis." 1 have seen so little 

 of this so-termed species that I am unable to advocate its specific claims, but I am more 

 inclined to consider it the young of some other form. Some young specimens of 

 Jj. anatina from the Philippine Islands much resemble it in shape. 



