194 



REPORT 1856. 



and Philippi states that it is not to be found even in the Royal libraries at 

 Berlin or Gottingen. Having fortunately obtained access to a copy of the 

 paper, and compared it with Mr. Nuttall's own shells*, and at the same time 

 with those brought by the officers of the Mexican war, I offer the following 

 as the best statement that present circumstances will permit. It should be 

 premised that Mr. Conrad, in the 'Journal' for 184:9, made several emenda- 

 tions of his paper which have been here incorporated. The new species are 

 described in the ' Proc. Zool. Soc' 1856, pp. 209-229. 



No. 



to 



OS 

 Ph 





Fig. 



Name. 



Locality. 



Station. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



236 



237 



236 

 235 



234 



248 

 247 



248 



238 



228 



IS 



IS 



18 

 IS 



17 



19 

 19 



19 



IS 



17 



5, 6 



7 



2 



1 



11 



8 

 5 



20 



8 



1 



Parapholas"f Californica, Conr 



Sta. Barbara. 



Sta. Barbara. 



Sta. Barbara, 

 Sta. Barbara. 



Sta. Barbara. 



Sta. Barbara. 

 California. 



Sta. Barbara. 



San Diego. 

 Sta. Barbara. 



clay rocks. 



clay rocks. 



muddy marshes and 



soft rocks, 

 salt marshes, bare at 



low w. 



salt marshes ; rare. 



one fine pair. 



in sponge, and thrown 

 up attached to roots 

 of fuci, in deep w. 



muddy marshes of 

 sea-coast. 



single valves. 



= Pholas G, Conr. a, pr. man. ; Sow. Thes. 

 = Pholas Janellii, Desh.Rev.1839, p.357: 



Guer. pi. 14-16 ; Chen, pi, 3. f. 5 ; 



Jay's Cat. No. 162.— Mus. Nutt., Cum., 



Brit. 



= Pholas p., Conr. a pr. man. 

 = Pholas concamerata, Desh. Rev. 1839, 

 p.357; Guer.' pi. 17; Chen. pi. 3. f. 4; 

 Jay's Cat. 186.— Mus. Gould. 

 Platyodon X cancellata, Conr., Jay's Cat. 265. 



—Mus. Nutt., Brit. 

 Cryptodon § Nuttallii, Conr 



?= Cypricia Nuttallii, quasi Conr. — B.M. 



Non Mactra Nuttallii, Rve. Conch. Ic. 



pi. 21. sp. 125.— Mus. Nutt., Brit. 



= Cryptomya Californica, Conr. Journ. 

 1849, p. 208 ; Jay's Cat. 467.— Mus. 

 Nutt. 

 Thracia curta, Conr. — Mus. Nutt 



Mytilimeria^l Nuttalli, Conr., Jay's Cat. 

 2221.— Mus. Brit. 



Lyonsia Californica, Conr 



? = Z. hyalina, Conr. This shell, which 

 seems to have been lost, probably re- 

 appears as L. nitida, Gould : v. infra. 

 Periploma argentaria, Conr 



= P.planiuscula, Sow. 1834, teste Gld. non 



Cum.; Jay's Cat.330.— Mus.Cum.Gld. 



Pandora punctata, Conr. — Mus. Cum., Nutt. 



* Mr. Nuttall's silvery locks have not lessened his interest in Natural Science. His 

 memory is singularly clear on all matters relating to bis own collections ; and has been allowed 

 to turn the scale on doubtful points, in the lew instances where no MS. had remained. 



f It is difficult to know what Conrad means by this genus, which is described in Journ. 

 1849, p. 214. He afterwards calls P. acuminata, which is clearly congeneric, Pcnitclla U'il- 

 sonii ; while he applies the name Parapholas to Pholadidea melanura. It is here used accord- 

 ing to the interpretation of Wcodw. (Man. Moll. p. :>29) for the Pholadidea with tripartite 

 valves, persistent cups, and large plates. 



J Platyodon is described as a subgenus of Mya, with four testaceous valves on the ends of 

 the tubes. 



§ Cryptodon is described as a subgenus of Lutraria, with two corneous valves, which close 

 the orifices of the tubes. 



T[ MytiUmcria, as appears from type valves in the Bpjt. Mus., received from Conrad, is a 

 subgenus of Lyonsia (not a synonym for it) with spiral umbos, regular rounded form, and 

 very slight ligamental pit. 



