Miscellaneous, 425 



MISCELLANEOUS. 



OCCURRENCE OF SERTULARIA ELONGATA, LAMOUROUX. 



To the Editors of the Annals of Natural History. 



Exeter. 

 Gentlemen, — I have much pleasure in recording the occurrence on 

 the British coast of the beautiful Sertularia elongata of Lamouroux, 

 the S. lycopodium of Lamarck. A fine specimen of it has come into 

 my hands, which was obtained by a lady, along with a number of 

 sea-weeds, on the south-east or south coast of England. 



Dr. Johnston informs me that the Sertularia elongata is mentioned 

 by Lamouroux as an English species, but as he does not state on 

 what authority, the author of the ' History of British Zoophytes ' 

 has not included it in his admirable work. 



This zoophyte, which is an exceedingly pretty one, may be at 

 once distinguished from all our native species of Sertularia by the 

 six long spines which arm the wide aperture of each cell. It is an 

 interesting addition to our fauna. 



I remain. Gentlemen, yours, &c., 



Thos. Hincks. 



Description of two new genera of Shells. By Dr. Philippi. 



In Reeve's ' Conchologia Iconica ' we find under Mitra, No. 80, a 

 dorsal view of a shell which Reeve states he found in Swainson's 

 collection of species of Mitra with the name Conohelix edentula at- 

 tached to it, but that it is decidedly a Conus. No description of this 

 species however is given in Reeve's monograph of Conus. I had the 

 good fortune to obtain this specimen last autumn by purchase, and 

 am fully convinced that it belongs neither to Mitra nor to Conus, 

 but must form a distinct genus which I have called Dibaphus, which 

 will indicate its two colours, and at the same time call to mind its 

 having been named twice. It may be briefly characterized as fol- 

 lows : — 



Dibaphus, Ph., n. gen. Ctenobranchiorum. 



Testa spiralis, subcylindrica, in spiram acutam terminata ; apertura 

 angusta, linearis, edentula, basi excisa ; columella basi recurva ; 

 labrum incrassatum, rectilineum, basi rotundatum et abbreviatum ; 

 labium nullum ; superficies epidermide (tenui ?) vestita. Animal . . . 



The second new genus, which I propose to call Amphichcena, may be 

 characterized as follows : — 



Amphichcena, Ph., n. gen. 



Testa bivalvis, sequivalvis, subaequilateralis, utrinque hians, oblongo- 

 linearis ; apices parvi, parum prominuli ; cardo in valva sinistra 

 dentibus duobus, in valva dextra dentibus tribus constans ; liga- 

 mentum externum, nymphae parum conspicuse ; impressiones mus- 

 culares duae ; sinus palliaris profundus ; margo internus antice cre- 

 natus, crassior. Animal .... 



Ann. ^ Mag. N. Hist. Vol. xix. 30 



