KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 39. N:o l. 93 
Aspidosiphon armatum DANIELSSEN and KOREN 1881. 
Habitat: 
West of Norway: 64? 2 n.—5” 35' e., clay, 911 m. (Mus. B.), 1 sp. 
As I have not had the opportunity of investigating this species, I am reduced 
to relying solely upon the description of the two Norwegian investigators, from which 
the following abbreviated excerpt may be given: 
Length of the trunk 8 mm.; length of the proboscis 16 mm. 
Tentacles 10 to 12, comparatively small, encircling the buccal aperture. 
Hooks small, curved, present all over the proboscis from its base to its anterior ex- 
tremity and arranged in about 600 annulets. 
Anterior and posterior shields devoid of true furrows. Anterior shield with its rim 
built up of comparatively uniform, oval, arcuate plates, rounded off anteriorly and 
narrower at the base; its central portion is composed of raised circular plates. 
Interior space of this shield strenghtened by 20 isolated muscular bands of 
silvery lustre. Posterior shield with its rim composed of oval plates, and with 
the central portion built up of exceedingly minute, almost circular, lamine. 
Two ventral retractors anteriorly united, attached to the inner surface of the terminal 
shield, nearest the ventral side (according to DANIELSSEN and KOREN only one 
retractor springing from two roots). 
Two free segmental organs. 
Intestinal spiral attached to the posterior shield by a few filaments of connective 
tissue (thus, devoid of the spindle-shaped musecle, fixed to the caudal shield 
and known in the preceding form ?). 
Onchnesoma Steenstrupii KorEN and DANIELSSEN 1875 and 1877. 
Pl. X. Figs. 151—152, Pl. XI. Figs. 157—172, Pl. XIII. Fig. 185. 
Sipunculus pyriformis DANIELSSEN 1859. 
Phascolosoma pusillum M. SARs 1868 (without description). 
; Habitat: 
West of Scandinavia: Lofoten, Skraaven, 200-300 fms., 1 sp. (Mus. Chr.), 
Trondhjem Fjord, Rödberg, clay, 200-300 m., many sps. (Mus. L.) — Sogne Fjord, 
61? 18' n.—6? 36' e., sabulous clay (Mus. B.), many sps. — 66” 49' n.—12?8' e., South 
of Lofoten, soft clay, a little sand, 260 m. (Mus. B.) a few sps. — Molde Fjord, 
Christiansund, Bergen Fjord and Hardanger Fjord, clay and argilliferous clay, 30— 
300 fms. (Mus. B.), several hundred sps. — Hvitingsö, mud, 150 fms., several sps. 
(Mus. Chr.) — Christiania Fjord, 60—100 fms. (M. Sars's type), I sp. — Moss, 1 sp. 
taken by G. O. Sars (Mus. Chr.). — Trondhjem Fjord, Rödberg, mud, 250 to 300 
K. Sv. Vet. Akad. Handl. Band 39. N:o 1. | 12 
