(■.nd I . K. Godfrey. 
S.A. XAT., VOL. XV. 
march 27th, 1934. 7iv Bernard G. Cotton 
40 
bluish-black spots, or with a cream foundation there may be a 
few broken concentric bands of translucent amber brown. A 
specimen dredged off St. Francis Island shows brown rays in the 
hollows between the undulations, composed of brownish radially 
elongated flecks disposed angularly in broken arrowheads, very 
closely set at the summit ol the shell, and relatively distant near 
the margin. The typical scultpure consists of about twelve pro¬ 
minent equidistant radial ribs, with four riblcts in the intercostal 
spaces but there may be only numerous radial equal striae, and 
these may vary ill different specimens, in size and number, and 
hi some mav be ven line; one example, dredged off St. Francis 
Island, .has about thirteen invalid axial undulations with very 
crowded axial incisions. \\ hen dredged and not beach rolled, 
the ribs and riblcts are beset with stout crowded somewhat imbri¬ 
cating tubercular scales. Quite common in King George Sound, 
both on the beach and in moderate depths, much more •" Muii 
along the South Australian shores, or in the dredgings. 
Sophismalepas Iredale 1924, Oblong-oval, with a 
blonc subccntral perforation which is surrounded inside b\ a 
narrow marginal callus; radiate!) striated; both extremities ele¬ 
vated. Tvpe— Fissurella ntgiUd Sowerby i§34. Iredale states 
that Hedlcy transferred the Australian species (nigrita) irom 
Mcgatebeumts Pilsbrv to Lucapinella Pilsbry, from stud)' «4 
the animal, but, with our present knowledge of this group, the 
observed differences were quite sufficient to separate the Aus¬ 
tralian shell generically. Medley gave a figure of the radula of 
his new species /.. prllcharcU and the radula in the Gwatkin Col¬ 
lection, labelled L. in grit a. confirms this: i.e., the central tooth 
Is degenerate and pear-shaped, the inner laterals with short some¬ 
what blunt cutting edges, the large outer lateral strongly tri¬ 
cuspid; the marginals being comparatively few and simple show¬ 
ing no cusps. In Luc a phi el! a Pilsbry the central tooth is large and 
rhomboidal, the inner laterals arc similar to those of the preced¬ 
ing, but the cutting edges arc more pronounced, while the outer 
lateral is bicuspid, the third cusp, if present, being very minute 
and not recognisable, while the marginals are many and notably 
cuspidate. 
S. nigrita S >\\et 1 ■ 1834 (Z PI. 1 
oval, depressed, both extremities dccidcly elevated; the orifice r 
nearly central or a little behind the middle, large, oblong, nearly 
one-third the length of the shell; dark brown, obscurely rayed 
with darker; radial striae, fine; growth striae, uneven; inside blu¬ 
ish; orifice surrounded within by a narrow marginal callus; shell 
edge blunt, smooth. Length 14. breadth 9.5, height 4 mm. \ot 
