306 



the previous form ; or it may be a shell of 10 mm. by 3"5 

 mm., with two spirals in the first two whorls, three in the 

 second two, and four in the fifth whorls, with oblique nar- 

 row axial costcC, 17 in the penultimate, as valid as the spirals, 

 tuber culating the intersections, and mildly coronating 

 the uppermost spiral. Several of these might be regarded 

 as distinct species did not intermediate forms reveal a com- 

 plete gradation between them. 



Dredged in 90 fathoms off Cape Jaffa, 5 moderate ; in 

 110 fathoms off Beachport, 4 good; in 130 fathoms off Cape 

 Jaffa, 1 alive, 22 good ; in 150 fathoms off Beachport, 10 

 good ; in 200 fathoms off Beachport, 5 good, 1 poor ; in 300 

 fathoms off Cape Jaffa, 4 good, 23 poor and broken. 



Drillia dilecta, Hedley. 



Drillia dilecta, Hedlej^, Memoirs Austr. Mus., iv., part 6, 

 1903, p. 387, fig. 100. Type locality— "'Port Stephens, New South 

 Wales"; also Records Austr. Mus., vi., part 2', 1905, p. 42, ''111 

 fathoms oflE coast of New South Wales." 



Mr. Hedley writes: — "Certainly D. dilecta, Hedley; the 

 variation is slight ; your shell is a little larger, has a spiral 

 more, and fewer weaker intercostal radial threads. All mine 

 have a broken lip, and I now see for the first time the deep 

 sinus which is typical, and to be added to the diagnosis." 



An infrasutural valid lira limits posteriorly the labral 

 sinus, which is bounded anteriorly by the most valid lira on 

 the whorl ; a very fine threadlet runs nearly midway between 

 the two; the sinus is deep and rather narrow. 



Dredged in 90 fathoms Cape Jaffa, 3 good, 8 immature; 

 in 130 fathoms, 2 perfect and 2 poor; 300 fathoms, 1 poor; 

 in 104 fathoms 35 miles south-west of Neptune Islands, 17 

 good, some of them immatu^re ; in 150 fathoms off Beachport, 

 1 perfect, 5 poor. 



Var. parabola, n. var. 



It differs from the type in having a much wider, more 

 open, parabolic labral sinus; in having more numerous spirals 

 on the whorls, 6 in the penultimate and 24 on the body- 

 whorl ; and in having six lirae instead of one between those 

 which bound the labral sinus. Only two examples were 

 taken — one in 90 fathoms off Cape Jaffa, and one in 200 

 fathoms off Beachport. Other specimens may establish it 

 as a distinct species or confirm it as a variant. 



Drillia cancellata, Beddome. 



Mangelia cancellata, Beddome, Proc. Rov. Soc, Tasmania, 

 1883 (1882), p. 167. Type locality— '-Kelso Bay, Tamar River, 17 

 fathoms." 



