406 Illustrations in British Zoology. 



B-i9n9§ skffijhfifrm Bob \u\huBed teom eih Jo 9no ai tf .-ajhi 

 bgdnoegb won ggiosqa grfj j^tf I aabilon^ §| ^jsg 9 ;h gnome 

 -naJ owJ nBffj 9'iora gnivfid ai ^'^^^M^M^^ aisftib 

 i9J0BiBfIa oii9n9§ edi tedi oa J ^"o^^^^^^K^fe ibIuobJ 

 ni aohBohibom 90102 9iiup9i Iliw J^^^^^S^I^fuO lo 



. J*w /f^^^^^^^oi -lib-to 

 *8E8I .8S us^^^^^e^gjt-^a 



Vtow* 4§^l awaO sM ^ ^^atfa5i ^M *\o «»$WA K JIT .thA 



thrust cautiously from the tube, and the garniture of the head 

 is displayed so as to form a circle of miniature plumes of 

 great elegance and delicacy. «p 



The animal is scarcely an inch long, with a vermiform body 

 of a reddish or flesh colour, the tint varying in intensity, 

 according to its state of repletion. The head is truncated, 

 and invested with a fine membrane divided in front and 

 produced at the sides into angular points. On the upper and 

 dorsal, margin there are two dark, prominent, minute specks, 

 something like eyes. From the anterior surface of the head 

 originate the pectinated, or plume-like, branchiae, collected 

 into two bundles or tufts, but apparently forming a continuous 

 circle when expanded. There are six branchiae in each tuft, 

 but it is rather difficult to ascertain the exact number : they 

 are of a uniform yellowish colour. The mouth is inferior, 

 and is encircled with not less than six tentacular filaments, of 

 unequal length. Body tapered posteriorly, very distinctly 

 annular ; the segments shorter than their diameter, and armed 

 on each side with a few short unequal bristles : a darker line 

 down the middle marks the course of the alimentary canal, 

 ; which runs straight from the head to the tail. Just below 

 the head, and on each side of the intestine, there is a linear- 

 oblong organ of a dark colour, which is in a state of constant 

 alternate contraction and dilatation ; and which, therefore, I 



&*W ;dJWO!2 Srilp 39§B*8 9ffj Ik fli 9UBD 9fl±.8>l0BjjJ} J)Oq1 



J he genus babetla occurs in the Si/stema Nqturcc of JL111- 



i'naeiis,. who, having no distinct knowledge of the variety of the 



2fnjuf>$te% -placed in it every tube composed of particles of sand 



and broken shells united to a membrane by a glutinous 



(Sement. As at present restricted and defined, the genus may 



be? considered as having been instituted by Cuvier, whose 



name Lamarck has uncourteously changed to that of Amphi- 



