180 ANNELIDA POLYCIUETA. 



ligule is greatly enlarged , and consists of an elongated 

 lamella; the inferior ligule is obtusely conical, longer than 

 the ventral lobe , about of the same dimension as the dorsal 

 one. The dorsal cirrus , arising from a shallow notch of the 

 ligule, measures a little more than one third of its length. 

 The ventral cirrus is much shorter than the inferior ligule. 

 The paragnathi consist only of blunt, conical teeth. 

 The maxillary region of the proboscis has in group I. 

 one tooth ; II. is a narrow semilunar patch ; IV. is a larger 

 group of about 5 transverse rows ; III. a transverse patch 

 of 3 rows; basal region, group V. one conical tooth ; VI. a 

 large, oval, transverse ridge; VII. and VIII. an irregular 

 belt of four series, uniting into a single one at the dor- 

 sal side, the anterior teeth of the belt are the largest. 

 In regard to this character our specimens differ from Grube's 

 N. Stimpsonis , which has a belt of only two series. In Grube's 

 drawing of the proboscis (fig. 8, a) the groups V. and VI. 

 seem to consist of minute teeth; however this must be a 

 mistake of the artist, for Grube states exactly: »annulus 

 posterior supra granis 3 maximis valde distentis, triangu- 

 lum valde obtusangulum vel lineam componentibus". More- 

 over in his paper »die Familie der Lycoriden", p. 16, he 

 observes, that his N. Stimpsonis belongs to the sub-genus 

 Perinereis. Ehlers seems to have overlooked this , for in 

 his systematical table N. Stimpsonis is erroneously ranged 

 in the group characterized » Kieferspitzen vollst'andig, nur 

 kegelförmige". 



Wereis minor Hans. (PI. 8 , figs. 8 — 10). — loc. cit. 

 p. 12, pi. IV, figs. 8-12. 



Epitocous form. Length of the body 40 mm. (ac- 

 cording to Hansen), its breadth 4 mm. Cephalic lobe longer 

 than the antero-posterior diameter of the three follow- 

 ing segments. Antennae short, of about half the length 

 of the head, extending till the first articulation of the 

 palpi ; antero-posterior diameter of the buccal segment scar- 

 cely longer than that of the following ring. Tentacular 



Notes from the Leyden Museum, Vol. XI. 



