92 AMERICAN JOURNAL 



Sp. 67. M. pJirygia, Sow. — If we refer to the figure of 

 Swainson's M. guttata, in Zoological Illustrations, 2d series, 

 vol. i, pi. 44, f. 2, and then select from Sowerby's and Reeve's 

 figures the one which approaches nearest to it, we shall in each 

 case be led to that of M. phrygia, Sow., and I think no one can 

 make this comparison without being satisfied that Sowerby, in 

 describing that species, had Swainson's shell before him. 

 Swainson's name had long before been preoccupied by Dillwyn, 

 and must hence be dropped. Petit had, therefore, proposed, in 

 1851 (Journ. de Conch., ii, 55), to change the name to Swain- 

 soniana; but as Sowerby's phrygia was described in 1846, it 

 may properly be retained, with 31. guttata, Sw., and M. Swain- 

 Boniana, Petit, as synonyms. 



Sp. 68. 31. DeBurgJdce, Reeve. — A very distinct species, rare 

 in collections, for the possession of which 1 am indebted to the 

 kindness of Mr. D. W. Ferguson, of Brooklyn, N. Y. 



Sp. 69. 31. muralis, Hinds. — This species, carefully described 

 by Hinds in Proc. Lond. Zool. Soc, 1844, p. 76, under the im- 

 pression that it differed from Kiener's 31. maculosa, must, I 

 think, be referred to that species. It agrees well with Kiener's 

 figure, and is, in fact, the only species figured by either Sowerby 

 or Reeve which does answer to that. Kiener's description also 

 applies, except as to the "smooth labrum," while both figure 

 and description apply to Hinds' shell far closer than to the 31. 

 guttata, Sw. If my views be correct, the species must resume 

 the name of 31. 3Iactdosa, Kiener, and 31. muralis. Hinds, must 

 take the place of synonym. 



Sp. 70. 31. sagittata. Hinds. Not so well figured as in 

 Sowerby. I cannot distinguish 31. fluctuata, C. B. Ad. (Contr. 

 to Conch., p. 56), from this. 



Sp. 71. 31. frumentum. Sow. Here ascribed to the West 

 Indies, and so also in Sowerby's Thesaurus; but in Sowerby's 

 original description (Froc. Lond, Zool. Soc, 1832, p. 57) it is 

 said to have been brought by Mr. Cuming from St. Elena and 

 Salanga (Ecuador). I suspect that this is correct, the West 

 Indian species of this type being 31. sagittata, as above. 



Sp. 72. M. catenata, Mont. Two species are here con- 

 foundea under this name. Fig. 72, a, b, represent the true cate- 

 nata, while Fig, 73 is evidently drawn from 31. pulchemma, 

 Gaskoin (described in Proc. Lond. Zool. Soc, 1849, p. 21), a 

 species similar in size and form to the ca^ena^a, but differing 

 widely in its minute markings. 



