134 WORMS. MOLUJSCA 21. Nereis. 



mities, with the lateral margins deflected : feelers 2, besides 8 short 

 ones furrounding the mouth : pedal-limb oval, oblong, with a ilat 

 margin. 



7(3. D. bilamdlata. Oval, covered with a rough punc- 

 tured plate. 



Sea coasts, Brit. Zoo/, t. 24,7. 24. Barbutt. 4.7.2, 



Body the size of a fnail, abrubt in front, glabrous, above pale 

 brown with grey dots, beneath white : flute with fulphur dots 

 above, white beneath: feelers brown: vent tranfverfe, furrounded 

 with 6 fulphur plumes. 



77. D. pinnatifida. Body elongated, pinnate down the 

 sides with conic clusters of ovate imbricate papillae. 



Montague Linn. Trans, -j.p. 78. t. 7.7 2. 3. 



Body 3 lines long, green and rufous : front rounded : tentacula 2, 

 trumpet-shaped, ending in a retractile filiform appendage : clusters 

 opposite, consisting of 5 or 6 rows of imbricate ovate blue-grey 

 papillae tipt with black. 



78. D.c&rulea. Body elongated, covered with clavate 



simple vesicles placed in whorls. 



Montague Linn. Trans. 7. p. 78. t, 7f. 4. 5 



Body a quarter of an inch long, green : feelers 4, fomewhat fili- 

 form : eyes at the bafe'of the hinder feelers: tubercles blue, tipt 

 with orange, with 2 pink oval vefcicles on the back between the 

 fecond and third whorl. 



79. D. j/rtu. Body elongated, tapering to a point be- 

 hind: vent on the back, surrounded by 7 feathere'd 

 appendages, below which are 2 long simple fusiform 

 ones. 



Montague Linn. Trans. 7. p. 79. t. 7-7-6. 



'Body half an inch long, white with orange spots : feelers 4, long, 

 pointed, orange, with 2 erect wrinkled ones on the top of the 

 'head: vent nearer the lower end. 



&0. D. macuiata. Body slender, tapering, with several 

 pairs of subclavate pedunqles down the back lobed at 

 their tips. 



^Montague Linn. Trans. 7. p. 80. /. 7. f. 8-9. 



Body 3 lines long, pale yellow fpeckled with pink : front obtufe r 

 feelers 2, trumpet-shaped, with a filiform appendage from the cen- 

 tre of each : peduncles mostly 4 pair, with a single one behind, 5 or 

 6-cleft at top. 



81. D. marginata. Body oval, surrounded with a thin 

 membranaceous undulate margin : froot obtuse, cre- 

 nate. 



Montague Linn. Trans. 7. /;. 79. t. j.f. 7. 



Body a quarter of an inch long and nearly as much broad, white 

 tinged with pink in the middle '.feelers 2, wrinkled or slightly 

 feathered : vent furnished with feathered membranes. 



21. NEREIS. : 



82. N. noctiluca. Blue-green, invisible to the naked eye, 



with 23 segments. 



The Ocean. Amain. Acad. 3. t. 3. Barbut tab. 4. f. 8. 



Body phofphorefceht, illuminating the fea by night, very minute 

 and agile, shining with a blue-green splendor. 



$3. N . pectinata. Smooth, prismatically coloured^ with 



14 rich gold tentacula and legs each side. 

 In the Sabella tubiforwisi Swerfy Brit. Mifcct* t, ^ 



