388 Miscellaneous, 



III his notes on Gehia pugetteiisis, Dana, Stirapson writes : — 

 " A curious parasitic bivalve, apparently new, both in genus and 

 species, is frequently found adhering by its byssus to the inner 

 surface of the abdomen of this crustacean. It approximates in 

 character to the genus Lepton. Gebia piiffettemis is found on the 

 whole coast from Puget Sound to ilonterey. It excavates its sub- 

 terranean chambers in the sand and mud of beaches, near low-water 

 mark, preferring that which is more or less indurated," (Stimpson, 

 " Crustacea and Echinodermata of the Pacific Shores of North 

 America," Journ. Boston Soc. Nat. Hist. vol. vi. (1857), p. 48 in 

 separate copy.) 



Professor A. Milne-Edwards, on seeing my paper on Bathy aecies 

 in the ' Annals ' of this month, has kindly sent me a copy of some 

 notes published by him in 1881, in which I find that he at that 

 time synonymized the genus Thranites * with BatJujnectes. I was 

 unaware of the publication of this paper, which has also escaped the 

 notice of S. I. Smith and G. 0. Sars, who have since written on the 

 genera ; nor is any reference to it to be found in the ' Zoological 

 Record.' 



March 12, 1891. 



Trochammina Bradyi, n. n. 



Attention has been called in 'The Xaturalist' of Curabrae by Mr. 

 Stebbing to the circumstance that the late Dr. Henry Brady, F.R.S., 

 used the name Trochammina Rohertsoai for two distinct species of 

 Foraminifera. He first gave the name in 1 876 to a delicate Carbon- 

 iferous species with oblong test, bearing a remarkable though super- 

 ficial resemblance to the Quinqueloculine Miliolce. Eleven years 

 later, in ' A Synopsis of the British Recent Foraminifera,' he applied 

 the same name to a living species not uncommon in deepish water 

 on the west of Scotland, and known also fi-om the south-west of 

 Ireland. His accurate description shows that he had no intention 

 to unite the fossil and recent forms. The latter are rather circular 

 than oval, with the peripheral edge lobulate, and having the outer- 

 most whorl composed of from four to six somewhat inflated segments. 

 There is no resemblance to Quinqneloculince. Since, then, the name 

 of the recent species must be changed, I would propose to call it 

 Trocliammina Bradyi, gladly availing myself of the opportunity to 

 pay this slight tribute of respect to my valued friend so recently 

 lost. David Robertson. 



Fern Bank, Ciinbrae, 

 Feb. 2.5, 1891. 



* A. Milne-Edwards, " Observations sur le genre Thranistes (Bov.) '' 

 (Bull de la Soc. Philom. de Paris, Stance du 12 max?, 1881). Milne- 

 Edwards throughout the paper per laj sum call? Bovallius's genus Thra- 

 nistes instead of Thranites. 



