DR. T. DAVIDSON ON EECENT BRACHIOPODA. 113 



Go. LAQUErS CALIFOENICUS, vav. VAXCOTJVERIENSrS. (Plate XYITT. figs. 10-13 Ij.) 



Off Vancouver Island we find in large numbers a smaller race or northern form 

 which Mr. Dall considers to be Laqucus californicus. The shell has also been quoted by- 

 Mr. J. F. Wliiteaves from off Metla-katla, Queen Charlotte Islands, and from between 

 Ilacc Island Lighthouse and Victoria lIarl)our, in from 30 to 70 fathoms, as well as ofi' the 

 N.W. end of Texada Island, in 40 to 70 fathoms, west coast of North America. I have 

 examined a number of specimens of this shell, some quite circular, others ovate and 

 truncate anteriorly with a slight depression on the anterior third of tbe lengtli of both 

 valves. Tlie foramen is also comparatively larger than in typical Californian examples of 

 LaqHens californicus. Interiorly the loop and its attachments are similar to tliose of the 

 Californian shell. It is decidedly of a livid yellowish-brown colour. After consulting 

 with Mr. Dall upon the subject, he wrote me back, on the I7th of December 1884 : — " The 

 shells from Vancouver which I referred to L. californicus are, I am quite confident, a 

 northern form of that species, less briglitly coloured, thicker, and ruddier. I have northern 

 specimens fully as large as the southern ones, and I believe my Mcgerlia Jeff'reijsi to be the 

 young stage of it. The northern form might perhaps have a varietal name; but if Ave 

 had plenty of specimens, I think they would be found to intergrade." 



I had always felt much uncertainty with respect to tlic specific value of the so-termed 

 Megevlia Jeffreysi, and was therefore pleased to hear Mr. Dall adniit that it miglit prove 

 to be a young stage of the northern form of Laqneus californicus. In 1871 it was In-iefly 

 noticed by Dall in the 'American Naturalist,' vol. v. p. 55, under the name of 

 Frenula Jeff'rcijsii ; in the same year in tlie ' American Journal of Conch.' vol. vii. p. 65, 

 pi. ii. figs. 7-10, by the name of Ismenia Jeffreijsl ; and in the ' Proc. Acad. Nat. Sciences 

 of Philadelphia,' 1873, p. 187, under tlie name of Megerlia Jcffreysi. It was dredged by 

 Dall at Port Etches, Alaska Territory, in 14 fatlioms chalky mud, as well as alive off the 

 Semidi Islands. It is also said to have been obtained iu the North Atlantic Ocean ; but 

 this statement needs confirmation. 



G6. Laqueus kubellus, G. B. Soworby, sp. (Plate XIX. figs. 1-5.) 



Terebrutula riibvUa, G. B. Sowerby, Proc. Zool. Soc. 184Gj p. 94, ; Tlies. Conch, i. p. 330, pi. Ixix. 

 figs. 40-12, 1840. 



Terehratella rubella, Davidson, A Sketch of a Classification of Recent Bracliiopoda, Ann. & ^lag. 

 Nat. Hist. 2ud ser. vol. ix. p. 368, 18o2 ; Woodward & Gray, Cat. of Brach. in tlic Brit. ]\Ius. p. 90, 

 1853 ; L. V. Schrenck, Reiscn imd Forschungen im Amnr-Lande, p. 4GG, 1831-56; E. Sucss, Ueber die 

 Wohnsitze der Brachiopodcu, Sitzungsb. k. Akad. der Wisscusch. Wien, Bd. xxxvii. p. 205, 1859. 



IValdheimia craniutii, A. Adams (not of Miillcr), Recent Brachiopoda I'ound in the Seas of Japan, 

 Ann. Mag. Nat. Hist. 3rd ser. vol. xi. p. 98, 1863. 



? Laqueus siiffiisufi, Dall, Amcr. Jonrn. of Conch, vol. vi. p. 125, pi. vii. tig. h, 1870. 



Laqueus rubella, Davidson, Proc. Zool. Soc. 1871, p. 306, pi. xxx. tigs. 18-22; Dall, Proc. Acad. Nat. 

 Sci. Philadelphia, 1873, p. 186; (>. Danker, Index ^lollusc. maris Japonici, p. 252, 1882. 



Shell longitudinally nearly oval or ovate, longer than wide, straight or indented in 

 front, lateral margins very gently sinuated. Dorsal valve uniformly convex to within a 



