i8o DISCOVERY REPORTS 



and less notched in the middle posteriorly than the shield of an average Antarctic 

 specimen. 



In this relation the shield of these specimens and Augener's figures (loq d and e) 

 are closer to Marenzeller's figures of the shield of S. sciitata (loc. cit. Fig. 6) than to 

 those of S. fossor (Fig, 4), Augener holds the opposite view. Moreover, I am equally 

 of the opinion that the shape of the gill plates and the degree of extension and size of 

 the genital papillae are of little, if any, differential value. There is, however, a substantial 

 distinction in the number and character of the anterior bristles : this is illustrated by 

 Augener. 



Regarding the name of this form, if S. fossor and S. scutata are synonymous, iS". sciitata 

 becomes the stem form and africana a variety of this. 



Family AMPHICTENIDAE 



Genus Pectinaria, Lamarck 

 Pectinaria sp. 



St. 4. 30. i. 26. Tristan da Cunha. 36° 55' 00" S, 12° 12' 00" W. 40-46 m. Gear DL. Bottom: 

 stones. One specimen. 



Remarks. The specimen is too much damaged to be assigned with certainty to any 

 species. It is a massive form, measuring as much as 13 mm. in breadth behind the 

 paleae. It is impossible to count the number of bristle-bearing segments. There are 

 13 paleae in both groups, the tentacular membrane has about 22 processes and the 

 dorsal collar has the same number. There are six anal hooks on each side. The bristles 

 and hooks resemble those figured by Mcintosh (1904, PI. vii, figs. 35 ^-36) for Pectinaria 

 capensis, to which species the present example probably belongs. 



Family AMPHARETIDAE 



Genus Amage, Malmgren 

 Amage sculpta, Ehlers. 



Ehlers, 1908, p. 141, pi. xx, figs. 1-9. 

 Hessle, 1917, p. 121. 



St. 167. 20. ii. 27. Off Signy Island, South Orkneys. 60° 50' 30" S, 46° 15' 00" W. 244-344 ^^• 

 Gear N 4-T. Bottom: green mud. Seven specimens. 



St. 177. 5. iii. 27. 27 miles SW of Deception Island, South Shetlands. 63" 17' 30" S, 

 61° 17' 00" W. 1080 m. Gear DLH. Bottom: mud, coarse sand and stones. One specimen. 



Remarks. The average measurements are about 30 mm. by 6 mm. at the widest part. 

 The body is unusually thick and slug-like and tapers very sharply posteriorly. Noto- 

 podial bristles are visible externally on 12 segments only, those of the first two chaetigers 

 (3rd and 4th segments according to Hessle's enumeration) being enclosed within the 

 notopodial lobes. The 3rd segment has only two small bristles inside the lobe. The cirri 

 are enormously developed in the hinder region. 



