283 



Triphora innotabilis, Hedley. 



Triphora innotabilis, Hedley. Proc. Linn. .Soc, New Couth 

 Wales. 1903 (1902), part 4, p. "608, pi. xxxii., figs. 23, 24, 25. 

 Type locality — Sydney Harbour. 



Dredged in Gulf St. Vincent, (?) depth, 10 good, 4 mod- 

 erate : in 22 fathoms, Investigator Strait, 2 perfect and 

 fresh; in 62 fathoms off Cape Borda, 1 jDerfect. Taken in 

 shell sand, Edithburgh and at Streaky Bay, good. Identi- 

 fied by Mr. Hedley from his type. 



Triphora latilirata, n. sp. PL xxvi., fig. 1. 



Shell siiiistral, solid, elongate-conic. Protoconch of 5 

 whorls, smooth and round. Spire-whorls 13, flat, sloping; 

 suture rather wider than the spaces between the spiral ribs. 

 Spirals 3, flat, wide, nearly smooth on the surface ; inter- 

 stices narrow, pimctated by close-set axial incisions, which 

 also cut the sides of the lirse. Body-whorl rhomboidal, with 

 three spiral ribs, towards the aperture the interspaces are 

 occupied each by a short, rapidly-widening spiral ; the axial 

 incisions are more distinct towards the aperture. Base con- 

 vex with a peripheral spiral, rounded, smooth keel, and a 

 second more anterior, punctated between. Aperture roundly 

 C|uadrate : outer lip sloping, straight, ascending at the suture 

 and pinched into a tiny sinus, anteriorly circular and effuse ; 

 in profile straight, minutely retrocurrent at the suture, ob- 

 liquely very slightly antecurrent anteriorly. Canal well 

 marked, nearly closed, especially at the junction with the 

 aperture, markedly recurved. Inner lip distinct, slightly 

 erect. Colour, white. 



Dim. — Length, 10'5 mm. ; breadth, 2"5 mm. 



Localit I/. —Type, Gulf St. Vincent, (?) depth, with 23 

 otliers moderate: in 15 to 20 fathoms off St. Francis Island, 

 1 moderate ; in 24 fathoms off jSTewland Head, 1 moderate ; 

 in 55 fathoms off Cape Borda, 1 good. 



Variation!^. — In the shell from 55 fathoms, in the ante- 

 penultimate whorl an interstitial thread arises between the 

 middle and anterior spirals, and becomes a definite though 

 small lira. In some large shells a thin sutural lamina is 

 seen between the later whorls. A large broken specimen 

 would measure 15 mm. if complete. In one individual the 

 posterior spiral lira throughout the shell is tinged brown. 



Triphora armillata, n, sp. PI. xxii., tig. 5. 



Shell solid, elongate -conic. Protoconch of 4 whorls, con- 

 vex, centrally carinate, the fourth with two approximate 

 caringe : crowded fine axial bars, concave forward above the 



