1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 185 



Meusfh., aud P. ambif/nirSj Reeve. The number of varices, though con- 

 stant within certain limits, is not so persistent and rigid a character as 

 to be of specific value as between the forms referred to by the authors 

 above quoted, some of whom seem to have held rather arbitrary notions 

 as to what constitute a species. 



MUREX (PHYLLONOTTTS) BRASSICA, Lamarck. 



A few examples. Magdalena Bay; La Paz (No. 4717-J, U. S. N. M.). 

 Mulege Bay. 



MUREX (PHYLLONOTTTS) RADLX, G in e 1 i m . 



Var.r= nitidus BRODERir. 

 -f- n igri tus M E u s c H . 

 -\- amhir/nus Reevk. 



Two beach shells. ISta. Margarita Island, Albatross. 



OCINEBRA LUGUBRIS, Sower by. 



Proc. Zool. Soc, London, 1832, p. 175. — Conch. 111., fig. 26, Reeve, Icon. sp. 143. 

 Murex erinaceoides, Val., Recneil d'observations, etc., ii, 302, 1833. := Miircx Cali- 

 fornicus, HiNDS, Proc. Zool. Soc, London, p. 128, 1843, Voyage Sulphur t. 3,.f. 9, 

 10. ^ Murex Californicns, Reeve, Conch. Icon. sp. 144. :^ Murex {Ocinehra) 

 erinaceoides, Val. '(=^1/". Califurnivns, Hinds), Steahns, Proc. Phil. Acad., 1878, 

 pp. 395-396. 



La Paz, Fisher (No. 46707, U. S. N. M,). Attention is called to my 

 remarks on the foregoing in the Proc. U. S. National Museum, Vol. xvi, 

 1893, j)p. 340, 347. 



OCINEBRA (MFRICIDEA) SQUAMULIFER, Carpenter. 

 ^. ^= M. fimhriata. A. Adams, var. 



Several fine examples (No. 40779, U. S. N. M.). Port Escondido; 

 San Lucas Cove. 



Very close to J/, hexiujonus Lam. Tryon remarks it is undoubtedly 

 the same species. I have not seen a sufficient number of the Antillean 

 form to hazard an opinion. 



EUPLEURA MURICIFORMIS, Broderip. 

 Common. 



San Lucas Cove, opposite Marcos Island (No. 32310, IT. S. N. M,). 

 One example measures 1.64 inches in length.* 



Subfamily PuRsPUKIN^. 



PURPURA PATULA, Liu niBUs. 



Two examples. Tres Marias (No. 32141, U. S. N. M.); also Socorro 

 Island (No. 32140, U. S. N. M.). 



* In connection with this species attention is called to Ball's paper in the Proc. 

 U. S. National Museum, Vol. xiv, pages 173-191, 1891. 



