284 



DISCOVERY REPORTS 



Genus Nectonemertes, Verrill (part) 



Nectonemertes mirabilis, Verrill, 1892 (Fig. 61). 



A note was made that the colour in life of this specimen was "pinky red". It was 



taken at St. 87. 



The length of the preserved specimen (N 80) was 

 14 mm., breadth 2-1 mm., thickness 1 mm. The 

 colour was yellow and semi-transparent. The anatomy 

 has been thoroughly described by previous workers. 

 This specimen was a female with large eggs. The 

 proboscis was missing. An outline sketch is given in 

 Fig. 61 to show the form of the body and the position 

 of the gonads. 



Fig. 61. Nectonemertes mirabilis, Verrill. 

 Outline sketch showing the form of 

 the body and the position of the 

 gonads, x 7. 



Fig. 62. Nectonemertes kempi, n.sp. A, transverse section 

 through the brain. B, transverse section through the body. 

 dv, dorsal vessel; In, lateral nerve; re, rhynchocoel. 



Nectonemertes kempi, n.sp. (Fig. 62). 



A small worm was collected with Crassonemertes robust a from 0-800 m. at 

 6°55'N, i5°54'W. It was fixed in corrosive sublimate. No note was made of 

 the colour and form in life. The preserved specimen (N 169) was 7 mm. long and 

 resembled the post-larval stage of a fish. It was white, somewhat flattened and had 



a tail fin . 



The sections show a very large brain (Fig. 62 A) completely filling the head. It seems 

 evident, however, that the specimen has suffered shrinkage from the fixative and this has 

 probably affected the basement layer and muscles. The most striking feature apart from 

 the size of the brain is the thickness and size of the rhynchocoel and its wall. The latter 



