AWKI.IIIS. 1. 



t; 



v 





fig. 3' 



Tip i if \ in 

 tral bristle. 



named species. The greater part of the surface of the scale is covered wit!; a lot of small prominences 



which are bluntly conical. Seen from above they have the appearance of small bud-like bodies, hollow 



in the tip or simply ring-shaped forms, quite the same circumstance which I have slated in 



H. aculinarum and which has evidently mislead Storm; this is not astonishing especially in 



a form like the latter, where the prominences are only few and small; in order to learn the real 



state of the case it is necessary to have one of the small bodies King in profile under the 



m eroscope. -- Besides the microscopical bodies are found, spread over the scale, some larger 



ones of a rather characteristic form. Their number and their arrangement on the surface of 



the scale vary a good deal in the different elytra. As a rule a row is found close inside the 



hind margin of the scale, as can be seen on PI. Ill, fig. 9. These larger bodies — Mc. Intosh 



calls them "blunt spines or tubercles" — have about the same form as the half of a hen's 



egg divided transversely, a little aslope and placed with the surface of the cut on the scale. 



As they vary somewhat in form - some among them being more blunt and others more 



acute — we are able to state both halves of the hen's egg represented among them. At 



their base they are surrounded by a tight-closing low ring-shaped wall (PI. Ill, fig. 4). The 



scale is rather thin and translucent and its margin smooth. 



In one respect my figure (PI. Ill, fig. 9) does not seem to agree with the description 

 and figure of Mc. Intosh, namely regarding the distribution of the microscopical bodies and 

 the greater prominences over the surface of the scale. Mc. Intosh writes: "The anterior and inner 

 half is densely covered with small horuv papillae or tubercles, while the outer area and that behind 



the scar for the pedicle have large tubercles 

 sparcely distributed. The small tubercles are 

 grouped with a few larger spines along the outer 

 edge while the posterior border is marked by about 

 eight large blunt spines or tubercles." In my 

 specimens the distribution of the great bodies 

 varies not inconsiderably in the different elytra, 

 but it is the uncovered part of the scale where 

 the microscopical spines are most numerous viz. 

 the lateral and caudal half of the scale. 



The parapodia are rather short and high. 

 The neuropodial branch is the strongest (fig. 4). 

 The segmental papillae are smooth but distinct. 



As to the distribution of this species Mc. 

 Intosh indicates that it has been taken by the 

 "Knight Errant" in the Atlantic in a depth of 53 fms., but he does not give further indication of 

 that locality; at the south-west coast of Ireland in a depth of 93 fms. together with Malmgrenia 

 castanea. After this it is quite natural to find it at the Faroe Islands. 



The Ingolf-Expedition. IV, | . 3 



fig- 4- 



