70 NAIDES. 



7. STYLARIA. 



Stylaria, Lam. An. s. Vert. iii. 223 (1816). Ehrenherg in Lam. An. 

 s. Vert. 2de edit. iii. 612. Oersted in lib. cit. 133. 



Char. Body linear, round, flattish in front: four first segments 

 divided by a stricture from the body, and the first or head prolonged 

 into a filiform appendage : eyes 2 : superior bristles capillary, pro- 

 truded ; the inferior forked spinets. 



1 . S. lacustris. 



Mille-pied a dard, Trembley, Polyp. 144. pi. 6. f. 1. 



A very small and slender Worm, Baker, Employm. Microsc. 317. 



pi. 12. f. 24. 

 Nereis lacustris, Linn. Syst. 1085. Rossel, Insect, iii. 477- tab. 78. 



f. 15 a, 16, 17, 18^, h, i; tab. 79. f. 1. Penn. Brit. Zool. iv. 46. 

 Nais proboscidea. Mull. Wurm. 14. tab. 1. f. 1-4; Zool. Dan. Prod. 



no. 2649; Verm. i. ii. 21. Turt. Gmel. iv. 91; Brit. Faun. 137. 



Stew. Elem. i. 390. Blumenb. Man. 246. Penn. Brit. Zool. iv. 



97 (1812). Blainv. Diet. Ivii. 498, Atlas, pi. fig. 3. Dalyell, Pow. 



Great, u. 131.pl. 17- f. 6, 7- 

 Stylaria paludosa. Lam. An. s. Vert. iii. 224; 2de edit. iii. 675. 



Oersted, sup. cit. 133. pi. 3. f. 5. 

 Stylaria lacustris, Templeton in Loud. Mag. Nat. Hist. ix. 235. 



Hab. About the roots of aquatic plants. 



Obs. Length 6-7'" ; segments 60-70 ; the middle ones nearly 

 twice as broad as long, regularly decreasing backwards; superior 

 bristles twice as long as the breadth of the body, the inferior unci- 

 nate, with an incisure about the middle. 



8. SERPENTINA. 

 Serpentina, Oersted, lib. cit. 134 (1843). 

 Char. Body linear, round, not flattened in front : the head angui- 

 form, with a produced lower lip : eyes 2 : superior bristles subulate, 

 the inferior forked or uncinate. 



1 . S. quadristriata. 



Nais serpentina, Miill. Wurm. 84. tab. 4. f. 1-4 ; Verm. i. ii. 20. Turt. 



Gmel. iv. 91 ; Brit. Faun. 137. Stew. Elem. i. 390. Penn. Brit. 



Zool. iv. 97 (1812). Lam. An. s. Vert. iii. 223; 2de edit. iii. 674. 



Templeton in Loud. Mag. Nat. Hist. vii. 130. f. 26 & ix. 235. 

 Serpentina quadristriata. Oersted, Naturh. Tidssk. 1843, 134, pi. 3. 



f. 3. Rep. Zool. Ray Soe. 1845, 282. 



Hab. In ditches amongst duck-weed. 



Obs. The spinets (inferior bristles) have a globular swelling a little 

 below the middle. The superior are geminate, subulate, and strong. 

 Length of the body 16-18", composed of eighty to ninety segments : 

 head marked with four dark transverse fasciae. 



