W. C. M'INTOSH ON BRITISH ANNELIDA. 377 



anterior border of the scale. The first pair are rounded ; but the next are reniform or 

 irregularly quadrate. They are surrounded by a madder-brown belt, with a tendency 

 to the development of a denser portion in the anterior band. Some specimens have 

 the centre of the scale likewise filled up with pigment, which also becomes deeply 

 tinted. Every cirriform process is perfectly smooth, presenting neither wart nor granu- 

 lation. The dorsal cirri taper much less than in Hermadion pellucidum, Ehlers : and 

 there is a slight enlargement toward the tip, of a different character from that in the 

 latter; and the organs are shorter. The under surface of the body is iridescent 

 pinkish. 



The bristles are pale, and the dorsal much shorter than the ventral. The former are 

 slightly curved, taper toward the tip, and are faintly serrated (PI. LXVII. fig. 15). The 

 tips of the ventral bristles are short, and present the usual gradational series from 

 above downward. The ordinary appearance of one of the superior ventral bristles is 

 shown in PI. LXVII. fig. 16 : scarcely any trace of the minute process is seen below the 

 tip ; and it disappears altogether ventrally (fig. 17). The developing forms, however, have 

 this clearly indicated (PI. LXVII. fig. 15). In specimens from Valentia (S.W. Ireland) 

 the process is very distinctly seen — for instance, when the bristle is slightly turned 

 round (PI. LXVII. fig. 18). It would also appear that the process is developed at the 

 end of one of the spinigerous rows, and is therefore lateral in position. A well-formed 

 Irish specimen is represented in fig. 19. The secondary process is less marked in the 

 examples from the Channel Islands and Shetland, though indications are present in all. 



The specimens found near the mouth of Spatangus purpureus are of a deeper madder- 

 brown or chestnut hue on the scales and cirri. 



Malmgeenia andreapolis, n. s. Not uncommon in the debris of the boats from deep- 

 sea fishing, on the West Sands after storms, and in the stomachs of cod and haddock, 

 St. Andrews. It is a species of some size, a few of the incomplete specimens being 

 about an inch in length and about one fifth of an inch in breadth. It is readily distin- 

 guished by the persistent brown ring on the scales after preservation in spirit. The 

 first pair of scales have a brown ring all round their border, and a brown spot in the 

 centre. The second scale has a brown ring round the exposed part, and a patch near 

 the outer border anteriorly, representing the spot in the centre of the first pair and 

 that of the scales behind. Those after the second have a ring more or less complete, 

 the broadest part being toward the inner margin, and the spot at the end of the anterior 

 leg of the V-shaped mark becoming more evidently separated. About the sixth or 

 seventh pair the V-shaped mark and the spot become distinct. The number of scales 

 seems to be considerable ; but as none of the specimens were complete it could not be 

 determined. They are nearly smooth, a few small papillae (under a power of 350 diam.) 

 being grouped in a limited area on the outer border, and no trace of these appears 

 beyond the margin. 



