J30 WORMS. MOLLUSCA 13. Actinia. 



oval, with transverse annular striw, crenulatc at the 

 sides. 



Shallow Streams. Linn. Trans. 2. />. 318. tab. up. 



Body about half an inch long, broad and rounded on the hind-part, 

 tapering like a pear before, convex on the upper-furface, flat be- 

 neath : eyes 2, approximate. 



43. II. muncata. Round, taper, annulate and tubercled, 

 - with 2 short horns on the head. 



The ocean. Br. Zoo/, iv.f. ao./. 14. Bat butt. e./. 8. 



Body 2 or 3 inches long, strongly annulate, and tuberrled on the 

 rings : head larger than the tail, which is much dilated. 



11 LINEUS. Line-worm. 



44. L. Isngssimus. 



The ocean. Somerby Miscel. t. 8. Eorl. Ccrmu. t. 26.. /. 13. 



Body many feet long, slightly tapering downwards, the third of 

 an inch broad, black towards the head, becoming light brown with 

 paler longitudinal streaks : head. broader and tapering jnto.a fnout, 

 emarginate, marked with a trunfverfe femicircular -line. 



12. GORDIUS. Hair-worm. 



45. G. aguaticus. Pale-brown, with dark extremities. 



Boggy places. Barbut Worms, tab. t ,f. i . 



Body 10 or 12 inches long, not much thicker than~a horfe-hair, 

 twistingjitfelf into various knots and contortions, fmooth, glofsy, 

 rarely a little slenderer at one end^: mouth small, horizontal, with 

 equal obtufejaws. 



46. (i. tn'gUlaceus. Body uniformly pale yellow. 



Jn clay. Barbut Worms, tab. i.f. 2. 



Body hardly distinguishable, from the last, except in being of an 

 uniformly yellowish colour. 



47. G. annutalus. Garnet-red annulate with white, with 

 a white line down the hack and another on each side. 



The ocean. Montague Linn, Trans j. p. 74. 



Body 6 or 7 inches long, rounded and white at the posterior ex- 

 tremity, with 2 rows of minute white fpots between the white lines 

 encircling the trunk ; front, except the upper-lip, white. ' 



ORDER II. MOLLUSCA. 

 13. ACTINIA. 



48. A. equina. Greenish, with a rosy foramen or mouth : 

 cirri pale rosy, with ai) aperture at the end of each. 



The ocean. Soiverbv Brit. Mifc. p. 7. tab. 4. 



Bodv greenish above, varied with orange stripes and covered- 

 with minute white f pecks ; roundish when clofed, warted, flat at the 

 bale- with a narrow rirn, grey beneath : mouth foft, red, furroundcd 

 by 138 cylindrical obtufe cirri with a. red line near the bafc of each: 

 ttomach light brown, plaited. 



49. A. crassicornin. Red, with fli irk conic cirri. 



Barbnt Worms, t. 5, t. 6. Shaw Nat, Mifc. f. 330. 



Body pale red, tranfverfcly wrinkled ; ciYri whitish at their tips. 



50. A., plumosa. Tentacula small : the margin surrounded 



with pellucid cirri. 



Barbut Worms, tab. r t .Jig. 5 . 



Body nearly cylindrical, tranfvcrfely wrinkled, varying in colour, 

 red, browu chesnut, yellow-brown, yellow-green, or white ; fome- 



