SABELLERIIDAE 171 



kind of delicate plume, at each side of which there are three or four teeth. The distal 

 part of the middle paleae is in the form of a tapering, elongated hook. The inner paleae 

 have the curious almost funnel-shaped appearance figured by Augener. There are only- 

 three parathoracic segments. 



Remarks. The condition of my material precludes my adding anything to Augener's 

 description. The combination of the slender middle paleae with the curious very stout 

 inner paleae appears to be characteristic. 



Sabellaria (Phragmatopoma) moerchi (Kinberg). 



Kinberg, 1867, p. 349. 



Johansson, 1926, p. 4, fig. i (2-8); and 1927, p. loi. 



Occurrence. St. WS 762 (4). 



Specific characters. The largest specimen measures 15 mm. for the body and 

 4 mm. for the Cauda, with a breadth of 2 mm. at the widest part for about 32 chaetigers. 

 The opercular peduncles are completely fused and the circular crown of paleae is very 

 slightly truncated obliquely. The small, pale yellow, geniculate, shovel-shaped outer 

 paleae form a fringe round the large dark brown middle paleae, which completely hide 

 the slender golden inner paleae. The paleae are figured by Johansson {loc. cit., figs. 2-4). 

 The outer paleae consist of rectangular shields which curve sharply outwards and up- 

 wards away from the slender basal spine. Apically the shield gives ofli' three processes, 

 a large central comb-like process and a pair of claw-like processes at the sides. The 

 middle paleae are large spines, delicately striated transversely, with a basal piece coming 

 off at right angles a short distance above the outer end. The inner paleae are in shape 

 similar to the middle paleae, but very much thinner and more delicate. 



I can see no median tentacle. Otherwise the arrangement of the palps, buccal veil, 

 buccal lobes, etc., shows nothing characteristic. The opercular peduncle is long, the 

 distance from the mouth to the operculum being about equal to that from the mouth 

 to the end of the parathoracic region. There are no dorsal hooks, but on opening up the 

 opercular peduncle from the dorsal surface four groups of hooks can be seen, each 

 group consisting of a pair of paleae resembling the middle and inner paleae of the 

 operculum. The paleae point forwards towards the operculum. The groups are arranged 

 in two pairs, one behind the other, and the hooks of the hinder pair are smaller than 

 those in front. The bristles of the first chaetiger are arranged in a fan-shaped transverse 

 row. About the last 15 chaetigers are abranchiate. 



Remarks. I can find nothing significant to distinguish this species from Johansson's 

 account of Kinberg's Phragmatopoma Japidosa. Gravier's Peruvian Sabellaria fauveli is 

 also synonymous. Johansson claims that Grube's Sabellaria castelnatii aho belongs here, 

 but Augener who has examined the type and figured the paleae shows an outer palea 

 without the lateral claws at the apex which is more like that of Sabellaria virgini, 

 Kinberg, as redescribed by Ehlers. Augener has, however, pointed out that the outer 

 paleae in the two species diff"er. Moreover, certain differences in the processes at the 

 apex of the outer paleae are all that I can find to distinguish virgini from the present 

 species. 



