Teredo,] PELKCYPOUA. 1021 



and the valves agree with the. type specimens of T. antarctica in the 

 Dominion Museum. No live examples have been obtained, but I 

 hope to get some in the near future. On comparing my specimens 

 with the figures and diagnosis of T. Bruguieri, Chiaje, commonly 

 known as T. norvegica, Spongier, I found that T. antarctica, Hutt., 

 cannot be separated from that European species. Mr. Hedley figured 

 the pallet of T. antarctica, after Clessin, Proc. Aust. Assoc. Adv. Sci., 

 1901, pi. 10, f. 8 (erroneously named T. Manni, as Mr. Hedley 

 informed me), which, however, is certainly the bipinnate pallet of 

 T. navalis, but not of T. antarctica. Huttoii describes the pallet as 

 penniform, and all the specimens I found agree with the figures and 

 description given for T. Bruguieri. 



This mollusc was no doubt, unfortunately, brought to our waters 

 by ships from Europe in the early days. A later importation is 

 T. Saulii, which most likely hails from Australia. This latter species 

 seems to displace the older form, for in a stringer of totara timber 

 which had been fixed to the Auckland Wharf during not more than 

 fifteen months I found nothing but living specimens of T. Saulii. 



Subgen. 2. XYLOTRYA (Leach), Gray, 1847. 



Xylotrya (Leach MS.), Gray, P.Z.S., 1847, 188. Type : Teredo bipalmulata, 

 Lamarck, 1801. Bankia, Gray, Syn. Brit. Mus. 1840 ; nude name ? 



Siphonal pallets elongate, penniform, articulate. 



2. Teredo Saulii, Wright, 1865. Plate ::.. figs. 8, a, b. 



Nausitora Saulii, Wright, Trans. Linn. Soc., xxv, 1865, 567, pi. 65, f. 915. 

 Calobates Saulii, Wright: Hedley, P.L.S. N.S.W., 1898, 94, f. 7-9. 

 Naiisitora Saulii, Wright: Hedley, Proc. Austral. Assoc. Adv. Sci., 1901, 

 248, pi. 10, f. 5 (pallet). Teredo fragilis, Tate, P.R.S. S.Aust., xii, 1889, 

 60, pi. 11, f. 13. 



Shell globose, with broad and deep auricles, extending to within a 

 short distance from the ventral margin. Beaks near the anterior end, 

 not raised, convex and incurved. Anterior end short, produced, sharply 

 angled in front, the dorsal margin descending, lightly concave, the 

 lower end faintly convex and oblique, forming an angle of about 

 100 with the long, lightly convex, and sub vertical anterior margin of 

 the body, which is triangular, its posterior end much shorter, oblique, 

 and somewhat convex ; the posterior auricle is high and rather broad, 

 the dorsal margin sloping and excavated, the posterior margin straight 

 and curved toward the posterior edge of the body. Front dorsal area 

 on each valve elongate - triangular, excavated ; posterior dorsal area 

 elongated, narrow, bounded by a convex sharp ridge. Sculpture : 

 The front triangular area with rather strong and close concentric 

 riblets, the interstices with faint microscopic radiate striae ; the anterior 

 half of the body is very finely radially costate, the riblets much finer 

 than those on the anterior area, and crossed by fine, prominent, micro- 

 scopic transverse strise ; the posterior half of the body is separated 



