38 



Trophonia hirsuta, n. sp. 



Stat. 18, 31. 



3 ufuldstændige Exemplarer, det længste vel 1 ctm. 

 langt med 21 Led. 



Kroppen aflang, tilspidset fortil med 8 — KJ lange 

 fortil rettede Børster paa hver Side af Iste Segment (T. 

 VII, Fig. 5). Huden besat med lange tynde Villi, der 

 ere længst omkring Borsterne og paa Ryggen, kortest paa 

 Bugfladen (T. VII, Fig. 6); paa Villi ligger et tyndt 

 brunligt Slamlag (T. VII, Fig. 8, a). 



De dorsale Børster ere rette, lange, de ventrale 

 kortere, brune med opadboiede Spidser (Fig. 6). Begge 

 Sorter ere leddede, de tykkere ventrale (T. VII, Fig. 8) 

 med længere og tydeligere fremtrædende Led end de dorsale 

 (T. VII, Fig. 7). I den indtrukne Siphon ligge to korte, 

 brede, bladlbrmige Tentakler og bag dem 8 sylformige 

 Branchier. 



Trophonia borealis, n. sp. 



Stat. 270, 275. 



3 ctm. lang, afrundet for begge Ender,; fortil lange 

 fremadrettede Børster, der have Dyrets halve Længde (T. 

 VII, Fig. 13); bagenfor dem 17 Led. Hele Overdåden 

 tint grynet; de dorsale Børster temlig lange og let synlige, 

 de ventrale korte, kun at opdage under Lupen. Farven 

 brunlig, skyldes et Overtræk af Slam imprægneret med Sand 

 og Smaasten; naar dette afskrabes er Huden farveløs og 

 besat med Villi jævntæt paa Ryg og Bug. I øvre Børste- 

 bundt 12 — 14 lange tynde Haarborster, der ere leddede 

 (T. VII. Fig. 14. 15). I nedre Bundt 5—6 korte, svagt 

 Sformigt krummede, tykke Børster, der nedenfor den glatte 

 Spids have tynde Tværstriber og en skraat gaaende Længde- 

 stribning (T. VII. Fig. 14. 16). 



Trophonia rugosa. n. sp. 

 Magdalenabay, 30—50 F. 



3 1 /-- ctm. lang. 7'""' tyk, afsnialncnde mod den bagre 

 Ende (T. VII, Fig. 9). Huden paa Rygfladen tværrynket, 

 paa Bugfladen med smaa Gryn. Paa Iste Segment fortil 



Trophonia hirsuta, n. sp. 



Stats. 18, 31. 



ments, measuring 1 



Three imperfect specimens, the largest, with 21 seg- 

 in length. 



Body oblong, acuminate anteriorly, with from 8 to 

 10 long bristles, directed forwards, on either side of the 

 1st segment (PI. VII. fig. 5). The skin furnished with long 

 slender villi, those round the bristles and on the back 

 longest, those on the ventral surface shortest (PI. VII. tig. li); 

 over the villi extends a thin layer of brownish mud (PI. 

 VII, fig. 8. a). 



The dorsal bristles are long and straight, the ventral 

 shorter, with brown points, curving upwards (fig. 6). Both 

 articulated, and comparatively thick ( PI. VII. fig. 8 ), having 

 the segments longer and more distinctly prominent than 

 have the dorsal ones (PI. VII. fig. 7). Within the retracted 

 siphon occur two short, broad, petaloid tentacula. posterior 

 to which are seen 8 stvliform branchiæ. 



Trophonia borealis, n. sp. 



Stats. 270. 275. 



Length 3'"'. rounded at both extremities. Anteriorly 

 long bristles, directed forwards, half the length of the animal. 

 (PI. VII. fig. 13); posterior to them. 17 segments. The 

 whole surface minutely granulated. The .dorsal bristles 

 comparatively long, and distinctly perceptible: the ventral 

 short, and invisible to the naked eye. Colour brownish, 

 derived from a thin covering of mud, mixed with sand and 

 minute pebbles; on scraping away this deposit, the skin is 

 found to be colourless, and covered with villi uniform in 

 height alike on the back and the belly. In the upper 

 fascicle from 12 to 14 long, slender, articulated capillary 

 bristles (PI. VII. figs. 14. 15); in the lower fascicle. 5 or 

 (I short, thick, slightly arcuate bristles, in shape presenting 

 some resemblance to the letter S. and. a little below the 

 smooth point, finely striate, with transverse and obliquely 

 longitudinal striæ (Pl. VII. figs. 14. 16). 



Trophonia rugosa. n, sp. 

 Magdalena Bay. 30 — 50 fms. 



Length 3 1 /.,"". thickness 7""". tapering towards the 

 posterior extremity (Pl. VIT, fig. 9). The skin on the 

 dorsal surface transversely rugose, on the ventral surface 



