Natural History of Hast Finmark. 121 
well as one of larger size and acute mandible ; but the most 
important difference is the form of the oral opening, which 
in this northern form, whether it be tubular or encrusting, 
is wider below than above and has a straight underlip. 
In my cabinet are specimens from off Disco, Greenland, 
100 fathoms (‘ Valorous,’ 1875); Gulf of St. Lawrence 
(Whiteaves) ; Cashes Ledge, N.E. America(Verrill, as “Escha- 
rella Jacotini”’). 
I am indebted to Smitt for a specimen of his var. lamel- 
losa from Spitsbergen, which certainly has not the characters 
of the foregoing form, nor does d’Orbigny’s figure (Pal. 
Frang. Crét. pl. decxxii. fig. 1) of his Semieschara lamellosa, 
to which Smitt refers, bear any resemblance to it ; it is wholly 
without avicularia. 
62. Smittina arctica, Norman. 
1869. Escharella porifera, forma majuscula, Smitt, “ Krit. Forteck. &c.” 
pt. iv. p. 9, pl. xxiv. figs. 86-38, and forma minuseula, fies, 33-35. 
1888. Smittra Landsborovit, form porifera, Hincks, “ Polyzoa St. Baw 
rence,’ Ann. & Mag. Nat. Hist. ser. 6, vol. i. p. ‘295, pl. xiv. fig. 
1894. Smittia arctica, Norman, ‘“ A Month on the Trondhjem i ion,” 
Ann, & Mag. Nat. Hist, ser. 6, vol. xiii. p. 128. 
1895. Smittia arctica, Nordgaard, “System. fortegn. Norge Marine 
Polyzoa,” Bergens Mus. _Aarbog, NOs) 2, Pa 20 Pla te Hoe 
1900. “Smittia Landsbor ovit, var. , Waters, cg Bryozoa Franz-Josef Land,” 
Journ. Linn. Soc., Zool. vol. xxviii. p. 90, pl. xii. fig. 7. 
This is a very pretty form, the front wall regularly punc- 
tate all over; the avicularium on or just below the lower 
lip of the oral’ opening with round mandible and a very 
slender lyrula behind it, which, however, can seldom be seen 
except on young specimens; sides and upper lip of oral 
opening raised ; the ocecium, which is imperforated, generally 
but not always falls back from the raised upper margin of 
the oral opening. 
I do not understand the transverse and circular lines which 
Nordgaard represents on the occium; Waters’s figure is 
characteristic, but the upper lip and the attachment of 
ocecium are rather more marked in their special character 
than usual. 
On an annelid tube in Bog Fiord in 100-120 fathoms. 
63. “ Smittia”’ porifera (Smitt). 
1867. Escharella porifera (typica), Smitt, “ Kritisk Forteckning, &e.” 
p- 9, pl. xxiv. figs. 80-32. 
1877. Lepralia porifera, Hincks, “Polyzoa of Iceland and Labrador,” 
Ann, & Mag. Nat. Hist. ser. A, vol. xix. p. 102, pl. x. figs. 1, 2. 
