206 TEREBELLA. 



But I cannot identify it with that of this paragraph. Zookgia Danica, 

 vol. ii. p. 40, tab. Ixx. 



PLATE XXVIII. 



FIG. 10. Terelella maculata, enlarged. 



11. One of the branchiae, enlarged. 



12. Tentaculum, back, enlarged. 

 IS. Front of the same, enlarged. 

 14. Globular corpuscula. 



19. Ova. 



6. MISCELLANEOUS. 



The general nature and the history of the preceding five species of 

 the Terebella are sufficiently explicit. But several others, apparently 

 nearer or more remote kindred species, must be treated with much diffi- 

 dence, some from presenting certain anomalies, and others from the rarity 

 of their occurrence preventing them from being clearly understood. 



1. TEREBELLA TEXTRIX The Weaver. Plate XXVIII. Pigs. 15, 



16, 17, 18. 



So few specimens of this animal, presuming it a distinct species, 

 have occurred during a long series of years, that I feel considerable em- 

 barrassment regarding it. At the same time, it was so long before my 

 attention was directed towards it, more may have been in my possession. 

 I doubt whether or not I can speak of the adult. 



Length of one specimen six lines, of another nine, of a third twelve. 

 The first had twenty- five tentacula, extending an inch, and a pair of 

 ramified red branchiae on each side, with a stump behind each. 

 Plate XXVIII. fig. 15, enlarged. The third species had forty tentacula, 

 but these organs totally intercepted the view of the branchiae. 



This species constructs a semicylindrical sheath of sandy or muddy 

 particles, which is always of insufficient dimensions to cover the body, or 



