47 
S.A* XAT , VOI.. XV. 
marc ir 27 in. 1934. By Bernard C. Co/ton and F. K. Godfrey. 
Cosmetalepas Iredale 1924. Referring to the shell describ- 
Crossc A Fischer 1864 as Fissurclla concatenate , Iredale 
writes:—"This peculiar form appears almost unchanged in South 
\frica, the shell found there being still called by Crosse &. Lischer - 
name, given to a South Australian species. icni son-Woods has 
-Is. • recorded it as fossil, noting a slight • irencc 1 :tween the 
fossil and recent shells, and also between the New South \\ ales 
ad South Australian shells* It is t tere -", bv ious that its 
j .. .clarities are of genettC importances and 1 propose the mm 
generic name Cosine tcdtpcis with Crosse 8c hischers species as 
\\ • eff It is to be regretted that Iredale does not more clearly 
tie hue the genus or indicate its affinities. We include it here lor 
tl , resent as the type species is South Australian, and the des¬ 
cription of Cosmetalepas coiicciteucitus Crosse N 1* ischer 1864, 
must suffice for the genus. 
C, concatenatus Crosse A 4 ischer 1864. PI. 1, lig. 6. (I'issiu- 
cHa). Oval, depressed, rather thin, without radiating ribs, very 
slivht.lv conp ressed laterally; white; sculptured all over with at 
elegant pattern ol little rounded pits (like a thimble), becoming 
CV'1 near the margins; perioration large, oblong, a little over oik 
iilth the length of the shell: inside with a narrow callus rim atomm 
the perforation; muscle impression not impressed, close to the mar- 
Length 15, breadth 10.5. height 3.5 mm. (Generally distributee. 
South Australian waters* rather uncommon, beach and dredg¬ 
ed to 150 fathoms. Under foul stones bel • tide in ass ci- 
ation with a grey ascidian. Outer Harbour, Corny Point. Also 
Western Australia—King (ieorge Sound to Bunbury, beach to 
35 t at horns. (Tvpe locality— Port Lincoln). 1 he netwoik o 
rounded hollows much resembles the work of one ol the liry- 
a:oa, or of a Polyp, although it is really shell sculpture, fissure 
su been Irak very slightly narrowed m front and strongly mai alli¬ 
ed inside. Very rarely there may be about twenty narrow light 
brown radial rays (or opaque white rays), also the white callus 
mind the hole inside mav be surrounded by smoky brown iionr 
which brown flames, becoming narrower, extend outward-, not 
quite to the border. 
Amblychilepas Pilsbrv l<s l )0. Large ussuied /'/.'.wo ho 
\\'i!i a saddle-shaped shell, elevated at the two ends, its margin 
thickened, blunt, not crenulatcd and without a white border o* 
rim above; perforation oblong or oval, subcentral. I y pc—/* a 
surrlla trajn'zinci Sowerb . 1854 — /'. jcrsciniccnsis Lamarck. 
! PI. L fig. 7. 
