52 



ANNELIDS. I. 



the stem is beset with small bunches of fine, hairy spines; these bunches alternate along the two 

 sides of the stem when seen in optical section, and are situated obliquely to the stem (fig. 23 a). 



The most dorsal of the compound bristles have a straight, in the distal end somewhat enlarged 

 shaft. The endblade is relatively long and provided with 8 to 14 joints or constrictions; it tapers 

 gradually and terminates with a single, fine tip (fig. 23 e). 



Ventrally to these are situated setse of which the shaft is rather strong and bent, and provided 

 with a relatively short and broad end-blade; the tip of the latter is curved, and supplied with a secon- 

 dary process converging with the former; thus the bristle ends with a formation not 

 unlike the beak of a raptorial bird, the tip of the bristle forming the upper part of the bill, 

 the accessory spine forming the under part of the same (fig. 23 6). The more ventrally the 



here described setae are situated, the longer and slender is the 

 endblade, it is provided with joints too (fig. 23 c). The tip of the 

 bristle retains its characteristic shape, but the bristle, on the 

 whole, grows more slender, the shaft is strongly bent and the 

 number of constrictions can be 8—10. 



The elytra are of a most characteristic shape. The foremost 

 among them are tolerably circular; the other more oblong, egg 

 or renal-shaped. The lateral side of the elytron has a thin por- 

 tion along the edge of which are situated some peculiar bodies, 

 two or three lobated as shown in the figures. The surface of 

 the scale is smooth, only a few diminutive papillae are found near 



fig- 25. 



fig. 24. 



the edge. 



I suppose that the form here dealt with is related to Sthcnc- 

 lais limicola, Ehlers, but so many differences are found that I, at any rate provisionally, propose to 

 separate it specifically from this form. 



Acoetidae. 

 Panthalis Oersted ii Kinb. 



1865. Panthalis Oerstedii, Malmgren: Nord. Hafs-Ann. p. 85 

 1893. — , Bidenkap: Norges Ann. polych. p. 67. 



1900. — — , Mc. Intosh: Monograph, p. 400. 



1914. — — , Fauvel: Comp. scientif. p. 78. 



Locality : 



63°c>5' N. L. 2o°7' W. L. 557 m. South of Iceland. 



Only a single fragment, consisting of the cephalic lobe and the 22 foremost segments, is pre- 

 sent. It is in all respects typical. 



Bidenkap indicates that at the coast of Norway this species reaches to the Droutheim-fjord 

 northwards. The present capture originates from about the same latitude; for the rest the distribution 



