CALAPPID^ 19 



Randallia bulligera Rathbun. 



Randallia bulligera Rathbun, Proc. U. S. Nat. Miis., xxi, 614, pi. xliv, tig. 6, 1898. 

 — Holmes, Occas. Papers Calif. Acad. Sci., vii, loi, 1900.— Rathbun, H. A. E., 

 X, 170, 1904. 



I have placed in this species two small specimens dredged from ten 

 fathoms, measuring 8x9 mm. and 6.2x7.2 mm. respectively, which, though 

 they do not tally in all points with the descriptions given by Holmes and 

 Rathbun, agree in certain features and seem to be fairly distinct from 

 specimens of R. ornafa of the same size. The most marked difference is 

 in the tubercles, which in these specimens are set close together and are 

 fairly uniform in size, though with a few smaller ones interspersed, and 

 present when dried and examined by a lens a thick coat of minute spines. 

 When wet these spmes are not noticeable and tend to give the tubercle a 

 ''pearly" appearance, so that they might easily be called "smooth" as in 

 Holmes's description. In the young of oniata the tubercles are more 

 scattered and of unequal sizes and show no spines. The pollex of the 

 cheliped in oniata is about equal to the length of the palm, while in these 

 specimens it is shorter. I can see no other prominent differences and as 

 the specimens fail to show the prominent trilobing of the margin of the 

 efferent branchial channels and the relative position of the posterior prom- 

 inences mentioned by Rathbun and Holmes, I have felt some hesitation in 

 calling them bulligera. 



Randallia bulligera has been reported from Magdalena Bay and from 

 off San Diego, but not previously from Monterey Bay. 



Family CALAPPID/E. 

 Genus MURSIA Desmarest. 



Mursia Desmarest, Consid. sur les Crust., 108, footnote, 1825. — Milne Edwards, Hist. 



Nat. Crust., ii, 109, 1837. 

 Thealia Lucas, Ann. Soc. entom. France, ser. 1, viii, 577, 1839 {Typt— Mursia crist- 



amana de Haan). 



*( 



Mursia gaudichaudii (Milne Edwards). 



Platymera gaudichaudii Milne Edwards, Hist. Nat. Crust., t. ii, 180, 1837. — Holmes, 

 Occas. Papers Calif. Acad. Sci., vii, 99, 1900, and synonymy. — Rathbun, H. A. 

 E., X, 170, 1904. 



