Mr. H. J. Carter on new species o/CEdogonium. 29 



When dried, one of my specimens shrivelled up and turned 

 brown, in which state it certainly nearly resembled that genus. 

 Krohn has fully described the animal of his Echinospira diaphana 

 in the 'Archiv fiir Naturgeschichte' for 1855, but I am unable 

 to give any account of his communication. There is a genus of 

 plants called Brownia, but I have no means of ascertaining the 

 priority. 



Brownia carinata, A. Adams. 



B. testa compressa, discoidea, cartilaginosa, tenui, pellucida, anfrac- 

 tibus vix 3, carinis tribus acutis prominentibus cingulatis ; spira 

 plano-concava ; apertura rhomboidea ; peristomate tenui, acute, 

 antice valde producto, lateraliter carinato. 

 Hab. China Sea ; taken in the towing-net. 



Brownia ungulata, A. Adams. 



B. testa discoidea, ventricosula, cartilaginosa, diaphana, tenui, anfracti- 

 bus vix 3, angulis tribus subacutis cingulatis ; spira plano-convexa ; 

 apertura rhomboidea ; peristomate tenui, acuto, antice producto, 

 lateraliter angulato. 

 Hab. China Sea ; taken in the towing-net. 



IV. — On Specific Character, Fecundation, and Abnormal Deve- 

 lopment in (Edogonium. By H. J. Carter, Esq., Assistant 

 Surgeon H.C.S. Bombay. 



[With a Plate.] 



The object of the following observations is to point out means 

 by which it is hoped the species of (Edogonium may be better 

 distinguished ; to confirm Prof. Pringsheim's discovery of the 

 mode of impregnation in this genus; and to figure and describe 

 an abnormal growth which takes place from the 'resting-spore.' 



Having in vain tried to find out the species of (Edogonium 

 which I have had under observation, among those which have 

 been already published, whether from the meagreness of the 

 descriptions and illustrations, or from their having actually been 

 undescribed, while other characters than those already noticed 

 have presented themselves to me, which are evidently more 

 valuable for specific distinction, I have been induced not only to 

 describe, but also to name, those which I have been studying; 

 for whether or not described before, those descriptions and 

 names alone will hereafter be found useful which serve for their 

 identification. 



The characters to which I allude are sexual, and therefore can 



