's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 23 



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short cirri is situated, whereas inside the tube a long, unpaired cirrus 

 occurs, presumably corresponding to the foliaceous appendage in Ammotr. 

 remigera. 



Jedan, Aroe-isles. P. N. van Kampen, 1907. 



Ammotrypane e hier si n. sp. Fig. 2. 



This species, agreeing in length with the preceding one, can easily 

 be distinguished from it, the number of its segments being much smaller 

 (38) and the parapodia being situated at a greater distance 

 from each other, two thirds of the breadth of the body. 

 The body is faintly annulated in its posterior region, 

 but does not show intersegmental grooves. The head is 

 covered with rings of small tubercles and furnished with 

 a rather long palpode, dilated in its distal extremity. 

 The first parapodia are without branchia and consist 

 only of a slender, conical process with bristles ; the suc- 

 ceeding ones bear a cirrus-shaped branchia, hook-like 

 bent and extending along the lateral side of the body Fig. 2. 



to the middle of the dorsum. At the ventral side of each 

 parapodium a small cirrus occurs, dilated in its distal extremity, like in 

 Ammotr. remigera Ehl. ; there is a dorsal fascicle of capillary bristles, 

 half as long as the branchia, whereas the ventral setae are much shorter. 

 The anal tube is short (? broken off), the branchiae and bristles of the 

 posterior two parapodia therefore extending beyond it; its opening is 

 elongated oval, narrowed in front of the median region and furnished 

 with a couple of elongated papillae at its ventral side. 



Jedan, Aroe-isles. P. N. van Kampen, 1907. 



Ammotrypane kiikenthali n. sp. 



Two small specimens, the largest one measuring 18 and the smaller 

 one measuring 15 mm. in length, are provided with 29 pairs of parapodia. 

 The head is furnished with a knob-shaped palpode ; the pharynx in one 

 of the specimens is protruded and beset with small, acute papillae. The 

 parapodia, excepting the first one and the last three ones, are provided 

 with a rather long, cirriform branchia, that however not reaches to the 

 median dorsal line ; a small ventral cirrus is present. The bristles of the 

 last pair of parapodia extend beyond the anal tube. The anal tube is 

 gutter-shaped, faintly annulated, distally not so high as in the proximal 

 part; along its posterior margin there occur 8 to 9 cirri, but its lateral 

 borders . are smooth. From the ventral opening of the tube an unpaired 

 anal branchia projects. 



Jedan, Aroe-isles. P. N. van Kampen. 1907, 



