39 



rettede Børster af ringe Længde (T. VII, Pig. 9). Bagen- 



for 25 Led. Paa disse Led tindes en ventral Borsteknude, 

 modens de dorsale Børster ingen Knude have. Disse sidste 

 4—5 i hvert Bundt. ere tynde Og leddede (T. VII. Fig. 

 lu. 11): de ventrale, "i — li i Inert Bundt ere tykke, brune 

 med en smal lang farveløs Spids og nedenfor denne temlig 

 tæt tværstribede (T. VII, Fig. LO, 12). 



Trophonia arctica, n. sp. 

 Magdalenabay, 20 F. 



2 ctm. lang. 4"'" bred med afrundet Forende og af- 

 smalnende mod Bagenden (T. VII, Fig. 17). '21 børste- 

 Inerende Segmenter. Rygfladen jævnt smaagrynet, Bugtla- 

 den med færre og mindre Papiller. De to forreste Leds 

 Børster rettede fremad, kun temlig korte, af samme Byg- 

 ning som de dorsale Borster bagenfor, lange, tynde, led- 

 dede (T. VII. Fig. 19), de ventrale Borster 4—5 i en 

 liden Knude (T. VII. Fig. 18) betydeligt tykkere, med en 

 lang klar Spids og nedenfor denne temlig tint tværstribede 

 (T. VII, Fig. 20). 



Brada granulosa, n. sp. 



Stat. 337. 



Det længste Exemplar 5 ctm. langt l 1 /^ ctm. bredt. 

 Pølseformig, tilspidset i begge Ender ('T. VII, fig. 21). 

 Kroppen overalt besat med Villi, der ere længere paa 

 Ryg- end paa Bugtladen; denne plan, hin hvælvet. Over 

 Villi et Slimo verdrag med Smaasten. Børsterne 6 — 8 i 

 hvert Bundt. temlig tykke, tværstribede og med en krummet 

 klar Spids (T. VII, fig. 22). Ingen dorsale Borster kunne 

 opdages. 



finely granulated. On the first segment, bristles ut' trilling 

 Length, directed tin-wards (PI. VII. tig. 19). Posterior to 

 the former, 25 segments, with a, ventral, bristle-bearing 

 protuberance; the dorsal bristles, which have no protu- 

 berance, slender and articulated (PI. VII. ligs. LO, 11). 

 4 or 5 in each fascicle; the ventral, i"i or li in eacli fascicle, 

 thick, and brown in colour, with a rather long, colourless 

 point, below which they .-ire striated transversely (PI. VII, 

 figs. Kl, L2). 



Trophonia arctica, n. sp. 



Magdalena Bay. 20 fins. 



Length 2 OT , breadth 4""". with the anterior extremity 

 rounded, and tapering posteriorly (PI. VII, fig. 17); 21 bristle- 

 bearing segments. The dorsal surface uniformly granulated ; 

 the papillæ on the ventral surface fewer and smaller. The 

 bristles on the two foremost articulations directed forwards, 

 comparatively short, but similar in structure to the posterior 

 dorsal bristles, which are long, slender, and articulated 

 (PI. VII. tig. 19); the ventral bristles. 4 or 5 arranged in 

 a small protuberance (PI. VII. fig. 18). considerably thicker, 

 with a long transparent point, below which they are finely 

 and transversely striate (PI. VII, fig. 20). 



Brada granulosa, n. sp. 



Stat. 337. 



The largest specimen measuring 5™" in length and 

 l 1 / 2 cm in breadth. Body cylindrical, pointed at the ex- 

 tremities (PI. VII, fig. 21), and everywhere studded with 

 villi, those on the dorsal surface (convex) longer than those 

 on the ventral (plane). Over the villi extends a thin 

 covering of mud interspersed with pebbles. The bristles, 

 from b' to 8 in each fascicle, thickish, transversely striate, 

 and with a bent, transparent point (PL VII, tig. 22). No 

 dorsal bristles could be detected. 



