38 



Trophonia hirsuta. n. sp. 

 Stat. 18. 31. 



'å ufuldstændige Exeiiii)lart'r. dct hi-ugste vel 1 ctiii. 

 langt med 21 Lcd. 



Kro]iiu'u allaug, tilspidset fortil med 8 — 10 lange 

 I'ortil rettede Borster paa liver Side af Iste Segment (T. 

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

 ere længst omkring Borsterne og paa Ryggen, kortest ])aa 

 Bugtladen (T. VII. Pig. 6); paa Villi ligger et tyndt 

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



De dorsale Borster ere rette, lange, de veutrale 

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

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

 med hengere og tydeligere iremtrædende Led end de dorsale 

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

 brede. l)ladlormige Tentakler og bag dem 8 sylformige 

 Branchier. 



Trophonia borealis, n. sp. 

 Stat. 270, 275. 



3 ctm. lang, atrundet for liegge Ender,; tbrtil lange 

 fremadrettede Borster, der have Dyrets halve Længde (T. 

 VII, Fig. 13); l)agenfor dem 17 Led. Hele Ovcrfladen 

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

 de ventrale korte, kun at opdage under Lupen. Farven 

 lirunlig. skyldes et Overtræk af Slam imprægneret med Sand 

 og Smaasten; naar dette afskrabes er Huden tarvelos og 

 besat med Villi janntæt paa Byg og Bug. I ovre Borste- 

 bundt 12 — 14 lange tynde Haarbnrster, der ere leddede 

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

 Sformigt krummede, tykke Borster. der nedenfor den glatte 

 Si)ids have tynde Tværstriber og en skraat gaaende Længde- 

 stribning (T. VII. Fig. 14. l(i). 



Trophonia rugosa. n. sp. 



Magdalenabay, 30—50 F. 



3\,. ctm. lang. 7""" tyk. afsnialnende mod den bagi-e 

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

 paa Bugtladen med smaa Gryn. Paa Iste Segment fortil 



V 

 / 



) C 



A-, 



Trophonia hirsuta. 



Stats. \K ti^' 



11. SJ). 



6r 



f 



Three imperfect s])ecimens. the largest, with 21 seg- 

 ments, measuring 1"" 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, fig. 6); 

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

 VII, fig. 8, a). 



The dorsal liristles are long and straight, the ventral 

 shorter, with brown points, curving upwards (tig. Gj. 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 teiitacula, posterior 

 to which are seen 8 styliform branchiæ. 



Trophonia borealis. n. sji. 

 Stats. 270, 275. 



Length 3'™, rounded at both extremities. Anteriorly 

 long bristles, directed forwards, half the lengtli 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 imiform 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 

 6 short, thick, slightly arcuate bristles, in shape presenting 

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

 smooth pf>int, finely striate, with transverse and obliquely 

 longitudinal striæ (Pl. VIT. figs. 14. IG). 



'y Trophonia rugosa. n. sp. 

 Magdalena Bay. 3o — 50 fms. 



Length S^j.,"", thickness 7""", tapering towards the 

 posterior extremity (PL VII. fig. 9). The skin on the 

 dorsal surface transversely rugose, on the ventral surface 



