Dr. Johnston’s Index to the British Annelides. 457 
2. Nereis margarita, Montagu, Linn. Trans. vii. 82. Penn. Brit. 
Zool. iv. 94. Turt. Brit. Faun. 135. 
3. Nereis lineata, Montagu, Linn. Trans. vii. 83. Penn. Br. Zool. 
iv. 95. Turt. Br. Faun. 135. 
4. Nereis maculosa, Montagu in Linn. Trans. xi, 21. pl. 3. fig. 4. 
5. Nereis rufa. 
Nereis rufa, Penn. Brit. Zool. iv. 96. pl. 27. fig. 2,3. Hogg’s Stock- 
ton, 29. 
6. Nereis mollis. 
Nereis mollis, Linn. Syst. 1085. Turt. Gmel. iv. 86. Jameson in 
Wern. Mem. i. 557. Penn. Br. Zool.iv. 96. Bosc, Vers,i. 168. 
7. Nereis octentaculata. 
Nereis octentaculata, Montagu in Linn. Trans. vii. 84. Penn. Brit. 
Zool. iv. 95. Turt. Brit. Faun. 135. 
8. Nereis punctata. 
Nereis punctata, Encyclop. Méthod. Vers, tab. 56. fig. 19, 20! 
Desc. Body +8;ths long, 4th broad, linear, nearly equal at both extremi- 
ties. Back rounded, brown, marked with three rows of light-coloured cir- 
cular spots arranged longitudinally, and with eight similarly coloured trans- 
verse lines placed at unequal distances. The middle series of these spots 
is the faintest; and besides the three dorsal there is another series on each 
side placed on the foot-like processes. Head small, quadrangular, corneous, 
pale, with four black eyes, two on each side and approximate. Anterior 
margin of the head furnished with five conical setaceous two-jointed tenta- 
cula, two on each side and one in the centre, which is the shortest and infe- 
tior. Mouth terminal, with a large projectile proboscis unarmed with any 
teeth. Feet forty on each side. Each foot is divided at the apex into two 
processes ; the superior terminated with a very long setaceous filament, and 
furnished with a retractile brush of fine hairs; the inferior has three short 
setaceous filaments, and a large brush of equally fine hairs. The filaments 
are not retractile. Ventral surface brownish. Tail abrupt, terminated with 
two setz like the lateral filaments. Anus terminal. 
This is a beautiful worm, and often glows with a metallic lustre of a light 
blue reflected from its pale spots. Its motions are very rapid. I have seen 
only one specimen, and this was many years ago. 1 had no doubt of its 
being the Nereis punctata figured in the work referred to, but it is not the 
Nereis punctata of Muller. The species is not noticed by Audouin and 
Milne-Edwards ; nor am I able to refer it to any defined genus. 
Syllis. 
Syllis, Savigny in Cuv. Rég. Anim. i. 203. Lam. Anim. s. Vert. 
v. 317. Aud.and M. Edw. Litt. de la France, ii. 204. (Vide Ann, 
Nat. Hist. xiii. p. 235.) 
1. S. armillaris. 
Nereis armillaris, Mull. Wurm. 150. tab. 9. fig. 1-5 ; copied in En- 
cyclop. Méthod. pl. 55. fig. 13-17. Turt. Gmel. iv. 86. Bosc, 
Vers, i. 168. Johnston in Ann. and Mag. Nat. Hist. xv. 145. pl. 9. 
fiz, 1, 2. 
2. S. prolifera. 
Nereis prolifera, Mull. Zool. Dan. mi. 15. tab. 52. fig. 5-9 ; copied 
