130 WORMS. MOLLUSCA 13. Actinia. 



oval, with transverse annular striae, crcnulatc at the 



sides. 



Shallow Streams. Linn. Trans. 2. p. 318. tab. 29. 



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

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

 neath : eyes 2, approximate. 



43. H. muricata. Round, taper, annulate and tubercled^. 

 with 2 short horns on the head. 



The ocean. Br. Zool. iv.f. 20. f. 14. Barbutt. 2./. 8. 



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

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



11 LINEUS. Line-worm,. 



44. L. longssimus.. 



The ocean. Sowerby Miscel. t. 8. Borl. Cornw. 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 : bead broader and tapering into a fnout,.. 

 emarginate, marked with a tranfverfe femicircular line. 



12. GORDIUS.. Hair-worm. 



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



Boggy places. Barbut Worms, tab. \.f.\. 



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

 twisting|itfelf into various knots and contortions, fmooth, glofsy,. 

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

 equal obtufejaws. 



46. G. argiliaceus. Body uniformly pale yellow. 



In clay. Barbut Worms, tab. \.f. 2. 



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

 uniformly yellowish colour,. 



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

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



The ocean. Montague Linn. Trans 7. 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 un aperture at the end of each. 



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



Body greenish above, varied with orange stripes and covered \ 

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

 bafe with a narrow rim, grey beneath : mouth foft, red, furrounded 

 by 138 cylindrical obtufe cirri with axed line near the. bafe of each : 

 stomach light brown, plaited. . 



49. A. crassicornis. Red, with thick conic cirri. 



Barbut Worms, t. 5. t. 6. Shaw Nat. Mifc. t. 330. 



Body pale red, tranfverfely wrinkled ; cirri whitish at their tips. 



50. A. plumosa. Tentacula small : the margiu surrounded 



with pellucid cirri. 



Barbut Worms, tab. jj.fg.5. 



Bpdy nearly cylindrical, tranfverfely wrinkled, varying in colour, 

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



