CLASS BRACHIOPODA 
231 
which become attached to the anterior edge of the mesial septum. The 
principal stems of the loop then extend to within a short distance of the 
frontal margin, where they become deflected in the shape of a horseshoe, 
giving off on each side a short lamella near their upper extremity, thus 
connecting the reflected portion with the principal stems of the loop close 
to the point where the two oblique lamellae leave for their attachment to 
the mesial septum. (Davidson.) 
Type locality, California. 
Range. British Columbia to off Point Loma, California. 
Laqueus californicus vancouverensis Davidson, 1887. 
Plate 17, figs. 5, 6, 7, 8, 9, 10. 
Davidson, Mon. Rec. Brack, pt. 2 p. 113; pi. 18, figs. 10—13b. 
Off Vancouver Island we find in large numbers a smaller race or 
northern form which Mr. Dali considers to be Laqueus californicus. The 
shell has also been quoted by Mr. J. F. Whiteaves from off Metla-katla, 
Queen Charlotte Islands, British Columbia, and from between Race Island 
Lighthouse and Victoria Harbour, 30-70 fathoms, as well as off the 
N. W. end of Texada Island, in 40-70 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 the length of both valves. The foramen is also 
comparatively larger than in typical Californian examples of Laqueus 
californicus. Interiorly the loop and its attachments are similar to those 
of the Californian shell. It is decidedly of a livid yellowish-brown colour. 
After consulting with Mr. Dali upon the subject, he wrote me back, on 
the 17th 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 brightly coloured, thicker and ruddier. I have northern 
specimens fully as large as the southern ones, and I believe my Megerlia 
Jeffrey si to be the young stage of it. The northern form might perhaps 
have a varietal name, but if we had plenty of specimens, I think they 
would be found to intergrade. ,, (Davidson.) 
Type locality, off Vancouver Island, British Columbia. 
Range. Southeast Alaska, Kodiak Island, Juneau Harbor, Forrester 
Island; off British Columbia; Juan de Fuca Strait, Puget Sound, Wash¬ 
ington coast. 
Laqueus erythraeus Dali, 1920. 
Suppl. Rep. Brit. Assoc., pp. 568, 574, 1864. Anver. Jour. Conch. 6:123-4. 
Shell oval, thin, inflated, pale at the umbos, elsewhere of a light reddish 
brown, darker toward the margin; perforations large, oval, crowded, 
arranged in quincunx order externally; minute, circular, very close to- 
