254 JOURNAL np CONCHOLOGY, VOL. ri, NO. 8, OCTOBER, I905. 



but the outermost bear two or three accessory denticles below the 

 main hook. The verge is armed with scales bearing large spines, 

 pyramidical or slightly hooked. 



This specimen bears a general resemblance to the figures of 

 Kentrodoris annuligera (Bergh, "Semper's Reisen," plate xli., fig. i), 

 of Doris maculosa Quoy & Gaimard, and of Doris funebris Kelaart 

 (Alder & Hancock, "Notice coll. nudibr. made in India," plate xxx., 

 figs. 9 and 10) which Bergh in his memoir on the Opisthobranchs 

 collected by Kiikenthal in the Moluccas and Borneo {Abh. Senekenb. 

 Ges., vol. 24, 1898) considers to be synonyms. But it certainly is 

 not K. annuligera, and D. macnlata and D. funebris are spotted on 

 the foot. Still it is quite possible that they may represent this animal 

 as much as K. annuligera. 



PI. lierd/nani Farran, from Ceylon ("Opisthobranchiate Mollusca," 

 Ceylon Pearl Oyster Report., iQ^S) P- 337) seems allied, but neither 

 the colour nor the dentition are quite the same. 



DORIDOPSID.e. 



Doridopsis Alder & Hancock. 



This is one of the most numerous, both in species and individuals, 

 of the genera of Nudibranchs to be found in the Indo-Pacific. Of the 

 forms mentioned below D. nigra and D. rubra are very abundant, 

 and D. niiniata, though it has not been recorded since Alder & Han- 

 cock, is said by them to be common on the East Coast of India. 



As in Chromodoris, the external appearance and coloration are 

 extremely variable, and it is difficult to distinguish between species 

 and varieties. D. rubra, D.fusca, and D. brockii are perhaps all 

 varieties of one species. D. nigra is protean in its transformations. 

 As there is no radula in this genus, and the internal organs offer few 

 characters which can be used for classification, there is a danger not 

 only of creating unnecessary species, but also of overlooking real but 

 inconspicuous differences, and a closer examination of the texture and 

 other characters of the living animals than has hitherto been possible 

 is much needed. 



Doridopsis miniata Alder & Hancock. 



Alder & Hancock, "Notice coll. Nudibr. made in India," p. 130, 

 pi. xxxi., fig. 18. 



Nine specimens of this form from Karachi. They are in an un- 

 usually good state of preservation, and, though there is no note as to 

 the appearance of the living animal, seem to have maintained the 

 original shape and colour. The tubercles, foot and mantle edge are 

 orange. The surface of the back is of a darker purplish tint, but the 

 whole animal gives a general impression of deep orange. 



