1906.] OF SOUTHERN INDIA AND CEYLON. 665 



an additional reason for pulling the alimentary tube back to give 

 more room. 



A further examination by sections of Doridopsis reticulata 

 (Cockerell & Eliot, J. of Mai. xii. 1905, p. 41) indicates that this 

 species also is a Doriopsilla. The real buccal ganglia are not, as 

 stated, 4 mm. behind the central nervous system, but close to 

 it and united by short connectives to the part that seems to 

 correspond to the pleural ganglia. The alimentary tube differs 

 somewhat from that of D. reticulata. The part in front of 

 the nerve-collar is broad and pouch-like : just under the collar 

 (as preserved) is a valvular apparatus separating this anterior 

 dilated portion from the long narrow posterior portion. Before 

 entering the liver the alimentary tube dilates again into a pouch 

 divided by a constriction. Under the buccal parts is a large 

 bilobed gland, probably, but not demonstrably, connected with the 

 proboscis. 



Doriopsilla miniata (A. & H.). (Plate XLVII. figs. 4 & 6.) 

 (A. &H. I.e. p. 130.) 



Four specimens are preserved, hardened and in bad condition, 

 but quite recognisable. The following notes are the result of 

 examining recent specimens from Karachi, which I have no 

 hesitation in identifying with this form. 



The animal was described by me in the 'Journal of Conchology,' 

 vol. ii. no. 8, Oct. 1905, as Doridopsis miniata, and stated to have 

 long buccal connectives. Subsequent examination by sections 

 has shown that this is incorrect. The poi-tion of the alimentary 

 canal lying between the central nervous system and the liver is 

 supported by several strong filaments, and some of these were 

 mistaken for connectives running between the buccal ganglia and 

 the central nervous system. 



The sections show clearly that the ganglia are arranged in the 

 manner characteristic of Doriopsilla.. The main mass {a) is of 

 somewhat irregular shape and surrounds the oesophagus. Imme- 

 diately behind it and touching it, but below the oesophagus, are 

 the two buccal ganglia close to one another. Not far from the 

 buccal ganglia a short connective runs to the right and ter- 

 minates in a small ganglion near the penis, which apj)arently 

 innervates the genitalia. The anterior portion of the alimentary 

 canal is a thin tube, which preserves a uniform diameter until 

 it enters the liver. On issuing from the proboscis it describes 

 a Z-shaped figure. The lower curve of this figure is free and lies 

 below the nerve-collar, which surrounds the upper loop. On 

 reaching the liver the tube runs for some distance just below the 

 surface before descending into the interior. In spite of a careful 

 examination, the presence of ptyaline or salivary glands could not 

 be demonstrated. It seemed certain that the wall of the proboscis 

 does not contain a long duct coming from the ptyaline gland as 

 in Doridopsis nigra. 



