292 



the pallial line is entire, and not sinuated like that of Periploma. 

 Further, the lunule of these Martinez specimens is well defined, and the 

 shorter subcuspidate side of M. sella seems to be anterior, as described by 

 Gabb. 



The writer is now under the impression that the types of P, cuspidatuTn 

 are mere badly preserved casts of the interior of valves of small specimens 

 of M. sella, and that the supposed posterior umbonal groove of the for- 

 mer is the impression of what Gabb calls the " short robust plate " which 

 " separates the anterior muscular scar " of Meekia " from the cavity of the 

 beaks ". 



Conrad's statement (in the first volume of the American Journal of 

 Conchology) that Meekia sella is probably the same as Cyprina bisecta, 

 can scarcely be correct, as the latter shell would seem to be a well charac- 

 terized species of Axinus. Capt. Vogdes (on page 8 of his "Bibliography 

 relating to the Geology, Palseontology, and Mineral Resources of Califor- 

 nia") in reference to the genus Meekia, says, " there is already a genus 

 Meekella, so this will not stand, " but he does not seem to be aware 

 that Meekia was published by Gabb in IS 64, and Meekella by White and 

 St. John (for a genus of Carboniferous brachiopoda) in 1868. 



AsTARTE Carlottensis, Whiteaves. 



Astarte Packardi, Whiteaves. 1884. This volume, part 3, p. 229, pi. 30, figs. 0, and 6, a-b. 



But probably not A. Packardi, White, 1880. 

 Astarte CarJottetisis, Whiteaves. 1889. Contr. Canad. Palaeont., vol. i, pt. 1, p. 154. 



East side of Alliford Bay, four large and beautifully preserved speci- 

 mens, with the test, and a few fragments ; south side of Alliford Bay, 

 abundant in the condition of small but perfect casts ; east end of Maud 

 Island, five small examples with the test preserved ; G. M. Dawson, 1878. 



Trigonia diversicostata, Whiteaves. 



Trigonia diversicostata, Whiteaves. 1876. This volume, part i, p. GS, jjI. 10, fig. 1 ; and 

 (1884; pt. 3, p. 230. 



An imperfect and badly preserved left valve, which is probably refe- 

 raljle to this species, was collected at the east end of Maud Island by Dr. 

 Newcombe in 1895. Two small Trigonias, also, collected three miles 

 north-west from Yakoun Lake, on the Rennel Sound Trail, by Mr. S. 

 Pearse in 1894, have been lent to the writer by Dr. Newcombe. One of 

 these is clearly an imperfect but well preserved right valve of T. diversi- 

 costata. The other, which is a perfect detached specimen, with both 

 valves, but with some of the finer surface markings obscured by remains 

 of the tenacious matrix, is apparently an abnormal variety of that species, 



