Operculum Fig. 23 å. 
Tænderne (Tab. X, Fig. 6, 6 a) afviger ikke fra fore- 
gaaende Arts. 
Forekomst: St. 262, 273, 837, 359, 363 fra 146 til 
416 Favne. 
Uagtet denne Form staar meget nær B. cancellata, 
saa vil den dog i alle Aldersstadier kunne lade sig udskille. 
Bela Schmidti, nob. 
Tab. VIII, Fig. 6. 
Mangelia? plicifera, Schmidt (non S. Wood), Mem. lacad. 
de sciences (Result. d. Mamuthexped.) St. Petersb. 1872, 
Pag. 57, Tab. IV, Bis. 4. 5. 
Pleurotoma plicifera, Leche, Overs. Vet. Akadm. Handl. 
(s Novaja Semblja og Jenisey Hafsmollusker*) Pag. 58. 
Kun et voxent Exemplar med en noget mutileret 
Læbe blev fundet i Magdalenebay (Spitzbergen) 30 Fayne 
og et ganske lidet i Adventbay 20 Favne. 
Schmidts: Tegning af Mangelia plicifera ligner saa 
lidet Woods Clavatula plicifera', at jeg neppe kan tro, at 
dette er den engelske Cragform. Jeg vover derfor at 
foreslaa Navnet Schmidti for den recente arktiske Art. 
Den har nogen Lighed i Form med B. cancellata, men 
Sculpturen er væsentlig forskjellig. 
Axialribberne er sigmadannede og meget stærkt frem- 
trædende; Spiralsculpturen tæt og meget fin, kun paa 
Hovedvindingens nederste Del er mere skarpt indskaarne 
Linier. Vindingerne er afrundede. Faryen er rødlig. 
Det unge Exemplar fra Adventbay, som med sine 
udprægede stærke Axialribber henviser den til denne Art, 
har kjølede Vindinger. 
Dr. Schmidts Tegninger stemmer godt overens med 
mit Exemplar og Prof. Leche har havt den Velvillie at 
sende mig hans PI. plicifera fra det Kariske Hav og jeg 
har saaledes overbevist mig om, at min Bestemmelse er 
overensstemmende med Leches. Hr. Arth. Krause har 
meddelt mig at han har Arten fra Beringshavet.? 
1 Wood ,Moll. from the Crag“ Vol. 1, Pag. 64, PI. VIL Fig. 15. 
2 I Krauses ,.Beitrag zur Kentnisz Moll. Fauna Beringsmeeres* 
Tab. XVIII, Fig. 1 er en fuldstændigere Tegning af Pela Schmidti end 
min og i hans Fig. 7 er Tandformen fremstillet. Hr. Krause gjør 
opmærksom paa, at Tænderue er paafaldende store, nemlig 1 mm. lang. 
Han gjør ligeledes opmærksom paa at Bela turpa, Dall sandsynligvis, 
er denne Art og jeg skal indrømme, at Dalls Beskrivelse (Pro. U.S. 
Nat. Museum 1885, Pag. 523) passer vel, men uden Tegning kan man 
vanskeligt med Sikkerhed identificere Arten. 
Operculum, fig. 23 a. 
The teeth (Pl. X, fig. 6, 6a) do not differ from those 
of the preceding species. 
Habitat: Stats. Nos. 262, 273, 337, 359, 363 im 
from 146 to 416 fathoms. 
Although this form stands closely related to B. can- 
cellata, it is, however, distinguishable in all stages of its 
growth. 
Bela Schmidti, nob. 
Pl, VIII, fig. 6. 
Mangelia? plicifera, Schmidt (non S. Wood), Mem. Vacad. 
de sciences. (Result. d. Mamuthexped.) St. Petersb. 
1872, pag. 57, Pl. IV, figs. 4, 5. 
Pleurotoma plicifera, Leche, Overs. Vet. Akad. Handl. 
(Novaja Semblja and Jenesey Hafsmollusker) pag, 58. 
Only one adult specimen with a somewhat mutilated 
lip was found at Magdalene Bay (Spitzbergen) in 30 fa- 
thoms; and quite a small one, at Advent Bay, in 20 fathoms, 
Schmidt’s illustration of Mangelia plicifera so little 
resembles Woods Clavatula plicifera*, that I can scarcely 
believe it to be the English crag-form. TI venture there- 
fore to propose the appellation Schmidt: for this recent 
arctic species. Its form has some resemblance to that of 
B. cancellata, but the sculpture is materially different. 
The axial ribs are sigmoidal, and very strongly pro- 
minent. The spiral structure very fine and close, and it 
is only in the lower part of the Body whorl that the 
striations appear more strongly imprinted. The whorls are 
rounded. The colour is reddish. 
The young specimen from Advent Bay; which from 
its distinct strong axial ribs plainly refers itself to this 
species; has angulated whorls. 
Dr. Schmidt’s illustrations comeide, well, with my 
specimen, and Prof. Leche has had the kindness to send 
me his B. plicifera from the Kara Sea; I have, thus, 
convinced myself that my determination is im accord with 
Leches. Dr. Arth. Krause has informed me that he has 
the species from Behrings Sea.? 
1 Wood ,,Moll. from the Crag* Vol. 1. pag. 64, Pl. VIL, fig. 15. 
? In Krauses , Beitrag zur Kentniss Moll. Fauna Beringsmeeres* 
PL XVIII, fig. 1 there is a more complete illustration of Bela Schmidti 
than mine; and in his fig. 7 the dental form is given. Dr. Krause calls 
attention to the fact that the teeth are remarkably large, namely 1 mm. 
in leneth. He further remarks that Bela turpa, Dall, is probably this 
species, and I must admit that Dalls description (Pro. U.S. Nat. 
Mus. 1885, pag. 523) accords well, but without an illustration it is 
difficult to identify the species with certainty. 
