86 JOURNAL OF CONCHOI.OC.Y, \OI.. 12, NO. 3, .TItLV, I907. 



J?eisefrgf/'f//sst', 1S97, p. 98, and references given there ; Eliot, 

 " Nudibranchs of Southern India and Ceylon," Pnh: Zool. Sik., 

 1906, pp. 649-651. 



Two specimens, plump and soft ; the larger is about 62 mm. long 

 and 27 mm. broad. The colour is white, with black or brown rings 

 on the back ; the rings in the middle are larger but fainter. The 

 pockets of the rhinophores are large, but the edge is only slightly 

 raised. The stalk of tlie rhinophores is white ; the perfoliate part 

 at the tip deep black. The branchial pocket is a transverse slit ; 

 the margin is moderately developed and reflexed. The branchiae are 

 six, tripinnate, longish, but not very ample, whitish, with a good deal 

 of black pigment. Probably the stem is black in all the smaller 

 ramifications. On the margin of the foot is a rather irregular row of 

 dark spots. As usual in the genus, the foot is slit transversely in 

 front, and the upper lamina divided so as to form two ample lappets. 

 The head is large ; the oral tentacles are also large, white, tipped with 

 black. A large number of specimens are preserved in the museum, 

 and the species seems to be one of the commonest Dorids found 

 near Singapore. 



Chromodoris lineolata (Van Hasselt). 



Bergh, "' siboga, Exp. Opisthobranchiata," 1905, pp. 14S-150, and 

 literature there cited. 



= Chr. striiitella Bergh in other papers. 



= Chr. fiinerea Collingwood, " Nudibr. IMoU. from Eastern Seas,"' 

 1878, pp. 131-2, and plate ix.. figs. 30-33. 



As far as can be judged from these two preserved specimens, 

 CoUingwood's figure of the living animal is probably good. 



The shape is high and stout: length, 15 mm., breadth, 10 mm., 

 height, 9 mm. The free portion of the tail is well developed, and 

 about 4 mm. long. Though the colour is faded, it would appear 

 from traces left here and there that the animals were brownish-violet 

 with numerous white or yellowish lines. Between thirty and forty lines 

 can be counted across the back ; the outer ones appear to be com- 

 plete ovals passing in front of the rhinophores and behind the 

 branchic-e. Those in the middle, though sometimes anastomosing, 

 are mainly longitudinal. The mantle margin is fairly ample, and the 

 sides of the body are apparently coloured like the back, each bearing 

 about ten lines. The branchi;>a appear to be eighteen in number, but 

 many are bifid or trifid, and the divisions might be counted as 

 separate plumes. 



The radula is as described by Bergh. The rhachis bears thin, 

 triangular thickenings, and the lateral teeth are hamate with a vary- 

 ing number (generally seven to eight) of denticles. 



