114 



DISCOVERY REPORTS 



Remarks. Four anterior fragments, the largest of which has about 40 chaetigers and 

 measures 18 mm. by 3 mm. including the feet. 



The proboscis was withdrawn in all the specimens, which makes the examination of 

 the papillae impracticable. These examples do not altogether agree with Augener's 

 description, especially as regards the dorsal cirri of the anterior segments. The first 

 two chaetigers are biramous and not uniramous as stated by Augener : in this they agree 

 with Fauvel's original description. Moreover, the ist chaetiger has a long ventral 

 tentacular cirrus, the 2nd has an equally long thread-like dorsal cirrus, and the 3rd 

 has a shorter but still thread-like dorsal cirrus, intermediate in size between that of the 

 2nd and 4th chaetigers. For about the following twenty chaetigers (Fig. 40, a) the 

 dorsal cirri are very short and thick; and between the 20th and 25th chaetigers they 

 lengthen to form the long filiform process shown in Augener's figure (loc. cit. pi. iii, 



fig- 59)- 



The middle feet (Fig. 40, b) correspond to Augener's description and figures. The 



pedal lobes are conical. The dorsal ramus has a fairly large delicate rounded posterior 



lamella and a very small anterior lamella : below this is the very long dorsal cirrus and 



the gill. The ventral ramus has a dorsal cirriform process, a large lanceolate posterior 



lamella and a small conical anterior lamella. Behind the ventral cirrus the skin is 



expanded into a small oval membrane. 



Ehlers' Nephthys inermis, besides having no papillae, lacks the dorsal cirri of the 



2nd and 3rd chaetigers. 



Nephthys serratifolia, Ehlers. 



Ehlers, 1897, p. 24, pi. i, fig. 13. 



St. 51. 4. V. 26. OflF Eddystone Rock, East Falkland Island. From 7 miles N 50° E to 7-6 miles 

 N 63° E of Eddvstone Rock. 115 m. Gear DLH. Bottom: fine sand. Six specimens. 



Zmm 



T3mm 



^O 



a 



Fig. 41. Nephthys serratifolia. 

 Foot. b. Proboscis dissected out. 



