576 ON SOME SOUTH PACIFIC NEMERTINES COLLECTED BY DR WILLEY. 



6. Eupolia quinquelineata (Burger, 1893). PI. LX. Fig. 33. 



Two specimens were obtained from different localities. 



The first which was found at New Caledonia measured after preservation 



in length .52 cm., 

 „ breadth 12 mm., 

 „ depth 6"o mm. 



In the arrangement of the dorsal stripes this specimen differs somewhat from 

 that figured by Biirger (2). The two outer lines were very imperfect and over con- 

 siderable portions of the body were entirely absent. ' The two inner lines were also 

 interrupted at intervals. The median dorsal line was broken in one place near the 

 head. Willey describes the dorsal intervening ai'eas as " opaque white with faint 

 crimson tinge locally." The two ventral stripes were not interrupted, and were each 

 located " in the middle of a dull slightly pinkish subtranslucid belt." About the 

 middle of the body an injury had evidently occurred and been repaired. Fig. 33 

 shews the effect on the arrangement of the lines. 



The second specimen, which came from New Britain, agrees in the arrangement of 

 the stripes with that figured by Biirger. Its dimensions when preserved were 



length 45 cm., 

 breadth 10 mm., 

 depth o mm. 



The posterior end was however broken. 



t. 



Eupolia midtiporata, n. sp. PI LX. Figs. 34—39 and LXI. Fig. 40. 



A single specimen from Rakaiya, New Britain. The animal was rounded in shape, 

 the length being 12 cm. and the breadth 3'8 mm. The preserved animal is of a pale 

 green colour and shews no markings. The mouth and proboscis pore shew clearly 

 (Fig. 34) ; the circular head furrow is complete and well marked ; the posterior 

 extremity is sharply pointed. 



The eyes are small and numerous and are all situated in front of the head 

 furrow (Fig. 35, oc). 



The skin is of the usual Eupolia type with the slight differences that the deep 

 glands of the cutis have very broad bases and that the epidermis contains small 

 compound glands (Fig. 39, gl.d and gl.c). 



The head glands are practically absent', a point in which this species shews a 

 marked difference from the rest of the genus. The outer longitudinal muscle layer 

 extends to the tip of the suout. Here it is much broken up (Fig. 36). The circular 

 and inner longitudinal layers do not appear until the level of the cerebral organ and 

 then only on the dorsal side. The relative thickness of the different muscular layers 

 (and also of the cutis^) is depicted on Fig. 40. 



1 Biirger (3, p. 179) writes "Die Eupolien sind alle ausgezeichuet durch eine machtig entwickelte Kopfdriise. 



