Gattij }fariae Lahoratonj^ St. Andrews. Wl 



luidiitc yellow jijranules. The small tentacles at the inar;^iii 

 of the ccphalie lobes keep coiistai)tly coiling, and the auiinal 

 soon covers itselt in a glass vessel with debris ot" \ari(Mis 

 kinds, and through the nieslus of its cover the long dciieaic 

 tentacles everywhere emerge. These tentacles are cdiated 

 on the ridges and their muscular fibres form meshes, and 

 though no circular coat is ap|)arent the oblique and con- 

 necting fibres would to a large extent supplant theui. From 

 the nature of" the parts no prominent ventral lip is present, 

 i)ut the narrow part of the first glandular ventral scuio 

 glides under the ventral Haps of the cephalic piate and runs 

 into the smooth surface which trends as a shallow groove 

 forward to the mouth. 



'i'he body is more or less dilated anteriorly, sometimes 

 b(iiig l.n'gely distended, and it tapers posteriorly to the tail, 

 whieli in the prepaiations is by no means slender, though iu 

 life It is often much more attenuate. It is rounded dorsally, 

 grooved ventrally, and has numerous segments, 50-88 or 

 more. iVsterioiiy it terminates ia a erenate anus, the 

 central papilla ventrally being the most prominent. Occa- 

 sionally tlic anus is carried outward on a small process or 

 appendix, but such may be due to regeneration. Anteriorly 

 are thirteen pairs of setigerous processes, and behind tlu se 

 about seventy or more nuciuigerous processes, which occupy 

 the ventro-lateral region. 



The segment behind the mouth has a single large glandular 

 ventral scute, narrow in front and broad and rounded pos- 

 teriorly. Tlien a narrow belt follows, its lateral regions 

 expanding to include the second setigerous processes. 

 Thereafter a median band with a central line passes longi- 

 tudinally backward, cutting the scutes into pairs in every 

 segment, and ot" these seven or eight are distinct, eacli 

 marked by transverse lines. The segments of the posterior 

 region have a deep furrow in the preparations dividing them 

 into two, and each of these is again subdivided into three 

 nai row rings. 



\ icwcd from the dorsum each setigerous process is 

 doi-sally bifid, a feature better marked in the smaller than in 

 the larger examples, aud the bristles issue between the 

 limbs. The lirst setigerous process has a considerably longer 

 anterior cirrus than those which follow, the posterior process 

 being smaller. In the middle of the body the anterior 

 process is shorter and thicker and the posterior process is 

 more distinct, whil>t the last setigerous process in one has a 

 rounded boss on the tip of the thick, short, antei.or proec-s, 

 and the posterior is at a greater distance from it ami smaller 



