398 DR. W. T. CALMAN ON 



Teredo {Xylotrya) scmlii Suter, Man. N. Z. Moll. 1918, p. 1021, 

 pi. Iv. fig. 8, a, h ; Gatlifi' and Gabriel, Proc. Roy. Soe. Victoria 

 (n. s.) xxviii. 1916, p. 121, p\. xiii. fig. 11. 



jSTec Ncmsitora saulii Wrigbt, Ti-ans. Linn. Soc. xxv. 1866, 

 p. 567, pi. Ixv. figs. 9-15. 



Localities. — Brisbane, Queensland. Specimens forwarded by 

 Ml". E. A. Cullen, Engineer for Harbours and Rivers. From 

 Jetties &c. in river 5 or 6 miles from Moreton Btiy, in Ironbark 

 {^Eucalyptus panicidata) and Hardwood {E. maculata). 



Auckland, New Zealand. Specimens forwarded by Mr. Hamer, 

 Engineer to tlie Auckland Harbour Board. From Kami and 

 Black Butt timber. 



Remarks. — Wrigbt states tbat tlie type-specimens of bis 

 Xausitora saulii, whicb were presented to tbe Biitisb Museum by 

 Miss Saul, came from Port Phillip, Australia, and it is perhaps 

 this statement I'ather than any very exact correspondence with 

 bis description or figures tbat has led Australasian natui'alists to 

 apply the name to tbe species common in Australian and New 

 Zealand waters. It appears, however, that Wi-igbt's statement 

 was in error. The specimens in the Museum collection labelled 

 as "Types" and presented by Miss Saul are stated, on the label 

 and in the Register of Mollusca, to be from Callao, Peru f. It is 

 true that none of the valves or pallets can be definitely recognised 

 as the original of any one of Wright's figures, but there are 

 two characters in which these specimens agree closely with his 

 account ; tbe auricle shows, on the inner surface, a series of 

 conspicuous curved ridges indicated in Wright's pi. Ixv. fig. 10, 

 and several of tlie pallets have the outer surface worn away so 

 as to expose the "central core-like body" mentioned in the 

 description (p. 568) and shown in pi. Ixv. fig. 15. 



These type-specimens, however, appear to me to be specifically 

 distinct from those I have examined from Brisbane and Auckland, 

 which undoubtedly belong to the species called JV. saulii by 

 Hedleyand other Australasian naturalists. The chief differences 

 may be briefly stated as follows : — 



X. saulii (Wright) (text-figs. 4 & 5). Dorsal outline of valve 

 sloping steeply without break into the upper margin of the 

 auricle, which exceeds half the total depth of the valve and 

 descends on the hind margin for more than half the distance 

 from the anterior notch to the ventral edge. Tbe auricle is 

 marked with rather widely spaced lines of growth which, espe- 

 cially on the inner surface, appear as strong carved ridges. The 

 anterior border of the auricle on the inside overlaps as a nari'ow 

 band and is closely appressed to tbe inner surface. The pallets 

 (text- fig. 5) have the segments strongly calcified and closely set, 

 the average interval being estimated at not more than one-fifth 



* Suter (Man. N.Z. jVloll. 1913, p. 1022) mentions Callao among the localities 

 lor tlie species, but states that the type is from Port Phillip. I do not l<no\v the 

 source of his information. 



