South . I ustml />: n S li alls 
s.a. :;.\Tj VQi., x\. 
march 27th, 1934. 
Puncturella Lowe 1827 (= Cemoria Leach M.S., 1819: not 
L eviorui' Risso 1826: Sipho Brown 1827: — / acerra Iredale 
1924). Small, eourcak having a spiralh recurved proioomch 
either persistent or absorbed in the adult; fissure either lanceolate 
or oval, on the front slope or at the summit of the cone; inside 
there is a plate extending forward forming a conduit to the fissure 
or a deck over it. The spiral protoconch, is inclined toward the 
right side, and the fissure is also a trifle to the right of a median 
line, when visible exccntric; the surface usually shows minute 
granules tinder a strong magnification. Tvpc —Patella uoaceina 
Li line 1771. (Circumj olar—Scotland to Northern Japan). Main¬ 
ly a deep sea group. Jt differs from E mar "inula in having; a 
septum or deck inside; from Zciclora in having the fissure closed, 
not an open anterior slit. 
Rimulanax (Subgenus) Iredale 1924. Iredale limits his 
remarks on this subgenus as follows:—“The species classed as 
Puncturella are ol different six.es, simple agreeing in being conical, 
and in the possession of an internal shelf. The deep-sea forms 
known as Cranopsis , such as Riniula asturiana Fischer 1882. are 
represented in Austral seas by the magnificent Puncturella corolla 
Verco 1908. This group 1 name Kimulanax f with P. corolla as 
typer’ 
Fissurisepta (Subgenus) Scguenza 1863. Fissurisepta is an 
erect, conical Pundurella in which the short oval fissure has 
wholly absorbed the apex: the internal septum is well developed; 
there is no radiating sculpture-, the smoothness of the surface be¬ 
ing broken only by tiny tubercles or granules, which arc better 
developed in species of this section than in the more coarsely 
sculptured, lype— /•. pa pill os a Scguenza 1863 (Noith Atlantic). 
Puncturella (itwarium Liedlev belongs here. 
P. harrisoni Beddome 1882 (Cemori) (— P. henmajia 
Brazier 1894). “Harrison's Puncturella.” Ovate, conical: sur¬ 
face sculptured with radiating ribs; protoconch subspiral, recurv¬ 
ed posterior]) ; perforation narrow, oval; interior with shcllv 
plate hall covering the perforation. Length 4. breadth 2.75. 
height 3 mm. MacDunncll Bay, beach. (Type loeHitv—off 
'Old Station. Brown's River Road, 7 fathoms, lasmama). 
P. corolla Verco 1908 (Puncturella). PI. 1. lig. 13. ‘’The 
•Crown Puncturella. 1 hin. roundly oval, depressed conic; apex 
eccentric, at the posterior fifth, spiral, well curved backwards: 
ptotoconch projects on right side and consists of two whorls, the 
host turn-and-a-ha!I smooth, convex, glistening; second half turn, 
w hid) increases rapidly, is minutely crowdedlv granular: at 
junction ol the two is a minute scar, the first part fitting into the 
second; in adult shell the latter part of prooconch looks directly 
back waul; sculpture of shell begins gradually as accremcntal 
