10-1 Prof. M'Intosli's Notes from ilie. 



Las a semicircular posterior lip, from wliich a median 

 process goes forward to the under surface of the bifid pro- 

 stomium. No tentacles are visible. In the preparation 

 only three branchiae are present on each side, but probably 

 the fourth has fallen off. They are somewhat thick tapering 

 processes arising from the third segment. 



The anterior hooks commence on the fourth segment, 

 liave a sinuous crown, an anterior border with five teeth, 

 the first being smaller than the second, and the third and 

 fourth larger than the second, and the fifth is stouter than 

 tlie others and separated by a gulf from the rounded prow. 

 The posterior hooks are consideral)ly smaller, but they seem 

 to have the same structure. The bristles are simple with 

 tapering, slightly curved, and winged tips. 



As in Malmgren's figure, eight segments occur behind 

 the bristled region, but in the present example two thick 

 short cirri occurred at the tip, and they seemed to be larger 

 than the dorsal cirri in front of them and less clavate in 

 outline than the dorsal cirri ; for, when viewed from al)ovc, 

 the dorsal cirri are clavate, with a narrow base and rounded 

 or bluntly ovoid tip. The last setigerous process is followed 

 by a short dorsal cirrus, the succeeding cirri having a more 

 elongated stalk and a more distinctly enlarged tip. Tiie 

 ventral uncinigenms processes are bluntly conical papilhe, 

 a considerable ridge intervening between them and the 

 dorsal cirri. 



The sixth is Melinna cristata, Sars, from the stomachs of 

 cod in St. Andrews F»ay, the Forth, and other points on the 

 east coast. The head varies in aspect according to the con- 

 dition of the tentacles. In contraction, when these are 

 withdrawn within the mouth, the anterior end presents 

 dorsally a short bluntly rounded process with, in some, a 

 notch in the centre. In extrusion of the tentacles there is 

 a flattened lamella, from the anterior edge of which the 

 somewhat clavate tentacles project. Tiie tentacular lobe is 

 separated ijy a deep dorsal groove fi'om the next segment, 

 the groove passing latciully downward to the mouth in front 

 of tiie posterior lip. The brancliia3 arise from the third 

 segment as two basal processes, each of which soon splits 

 into two anterior and two posterior ratlier long tapering 

 organs, the largest being the inner of the anterior pair on 

 each side, the two outer l)cing considerably less than the 

 inner posterior. Tlie posterior lip forms a lamella, with a 

 free anterior edge, whi(;h curves upward on each side to 

 form a prominent collar at the angle; (thus difleiiug from 



