KONGL. SV. VET. AKAUKMIENS HANDLINGAK. BAND 25. N:0 9. 19 



paries tubi crassus, parte infläta magis tenuis; pallida aut fusca; Rliabdaiuminai abysso- 

 rum Särs forsan forma pygmtea. 



Nostra typo Bradyi validior. 



Rhabd. linearis Buady, 1879, Ret. Ehiz. Cliall. Exp., Qu. Journ. Micr. Se. (ii. s.) 19, p. 37, t. .B, ff. 10 — 11. 

 » » Brady, 1884, Chall. Rep. 9, p. 269, t. 22, ff. 1—6. 



Hab. mare Atlaut. boreale luetr. 1670 rara; ad Groenlaiuliam raetr. 100, long. rara. 7 — 10. 



R. abyssoruin Särs. 



Tab. IV, figg. 67, 68. 



Tubi 3 — 5 radiatim dispositi, nunc tenues, nunc incrassati, plerumque ex camera 

 irregulari centrali exeuntes, cylindrici aut apicem versus attenuati, siuguli apertura apicali 

 paullum coai-ctata pra^diti; rufobrunnea, scabra. 



Fig. 67: brachiis tenuibus, e mari Lofotensi Norvegia;, profund. metr. 530 (M. Särs). 



Fig. 68: magis i"obusta e sinu Baffini, Groenlandiaä, profund. metr. 400. 



Rhabdammina abyssorum M. S.ies, 1868, Vidensk. Selsk. Forh. 1868, p. 248 (sine descriptione). 

 » » Brady, 1884, Chall. Rep. 9, p. 266, t. 21, ff. 1—13. 



Hab. Mare Atlantiouin boreale, siims norvegicos et groenlandioos metr. 350 — 1,000 passim, loois quibusdam fre- 

 quentissima; long. mm. usque ad 23. 



forma affinis: 



Tubo unico subrecto suturis subconstrictis, colore magis fusco. 



R. dlSCreta Brady, 1884, Chall. Rep. 9, p. 268, t. 22, ff. 7—10. 



Rhabdopleura Dawson, 1870, Giilf. St. Lawrence; Cauadian Natur. (n. s.) 5, p. 176, f. 7. 



Hab. c. proecedente minus frequens. 



BOTELLINA carpenter. 



B. labyrinthica Brady. 



Tab. IV, figg. 69—86. 



Tubiformis, apertura foramine irregulari simplici aut poris nonnullis exhibita irre- 

 gularibus; interne costis et granis sabulosis irregulariter cancellata; parte primordiali ple- 

 rumque paullum infläta, interne sublajvi, pariete tenui, iriterdum perforata; ex sabulo crasso 

 constructa, sa^pe insequalis, squalida, nido vermis similis. 



Forma nostra a typica statura minori, cancellis internis minus evolutis, iiicompletis 

 differt; grisea aut ferruginea. 



Fig. 69, 73: exempla ordinaria. 



Fig. 70: tubus longitudinaliter apertus, cancellas exhibens. 



Fig. 71: sectio transversa tubi. 



