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6864-1.jpg (101812 bytes)

 

 

Nototriphora sarcira (Laseron, 1954)

Description: Shell relatively small, sinistral. Protoconch lecithotrophic, of 2 smooth convex whorls (missing in Fig. 1). Teleoconch whorls with 4 beaded spiral cords and axial costae; spirals 1 and 3 start immediately after protoconch, spiral 2 on about 6th teleoconch whorl. Spiral 4 slightly exposed on all whorls. Another 2 spirals on base (numbered 5 and 6), spiral 5 smooth or weakly nodulose, spiral 6 smooth. Axial costae number 20-24 on penultimate whorl. Outer lip of aperture broken in all the type series; anterior siphonal canal short and upturned. Colour white, with large reddish brown maculations across each whorl that do not align over successive whorls.

Size: Holotype now 5.2 mm in length.

Distribution: Known only from holotype and one paratype from off Long Reef, Collaroy, NSW, in 14 fathoms (28 m).

Comparison: Readily distinguished by the bold reddish brown patches across the whorls.

Remarks: The holotype has lost its protoconch since being figured by Laseron in 1954 and Marshall in 1983. The photograph here, as of January 2015, shows a shell without a protoconch, of length 5.2 mm, in contrast to 5.8 mm given by Marshall (1983) and 6.8 mm given by Laseron (1954).

Figs. 1: Off Long Reef, NSW, in 14 fathoms (28 m). (HOLOTYPE, C.065855) (Photo Australian Museum)

 

Copyright Des Beechey 2015