dG Prof. M'Intosli's Notes frorn the 



4. On the British Ampliaretidse. 



No example of the Arapharetidse was entered in Dr. Jolm- 

 ston's Catalogue in 1855 ; two, viz. Melinna adriatica, 

 Marenzeller, and Amphicfeis curvipalea, Claparede = A. 

 ffunneri, Sars, appeared in the Plymouth Catalogue in 1904; 

 whilst a single species, Ampharete fjrubei, Malmgren, occurs 

 in Mr. Southern's ' Annelids of Dublin Bay.' 



The first species is Ampharete grubei, jNIalmgren, from 

 English, Scotch, and Irish areas, generally in water of sohie 

 depth (10-100 fathoms), though it occurs between tide- 

 marks on the shores of France. This form reaches nearly 

 an inch in length in spirit, and is slightly tapered anteriorly, 

 the bristled region of fourteen segments being narrowed 

 both anteriorly and posteriori}', and terminating in the 

 narrower uncinigerous region of twelve segments, the 

 caudal extremity having a series of slender filiform cirri. 

 Generally speaking, the segments of the anterior region 

 are narrow, those of tlie posterior region are wider. Tlie 

 terminal segment is comparatively small, and the filiform 

 tapering cirri, which jNTalmgren says arc twenty in number, 

 seem to surround the vent. The body is somewhat smoothly 

 rounded dorsally, flattened and marked by a median band 

 vcntrally. 



The cephalic lobe is, as Fauvel describes, more or less 

 pentagonal, the two anterior lines of the pentagon sloping 

 obliquely forward and inward so as to make a blunt cone. 

 At the posterior border of this region is on each side a 

 minute eye, generally indistinct in spirit-preparations. 



The buccal segment is narrow and bears inferiorly the 

 buccal tentacles, which Fauvel frequently found in life in 

 the mouth. The tentacles taper from base to a|)ex, which 

 in the j)reparations is often slightly enlarged. The base of 

 each is smooth, the small pai)ilUe appearing laterally and 

 increasing in length in the slender distal region of the organ, 

 tlie tip, however, being bare. A typical papilla is a trans- 

 lucent cylindrical process of the hypodcrra covered with 

 cuticle, and liaving microscoi)ic palpocils at tlie tip, the 

 space between the rows of paj)ilhc being ciliated, whilst 

 the convex dorsal surface has palpocils, and their cavities 

 fHiinmunicate with the ctclomic space (Fauvel). In struc- 

 ture tiiese papilla thus diller from those of Suhellides, M'hich 

 have the internal axis. 



The month has, a; hen closed, a puckered margin with 



