MARINE WOOD-BORING ANIMALS. 



395 



Teredo mannii Wright. ("L'ext-figs. 2 &, S.) 



Kuphus mannii Wright, Trans. Linn. Soc xxv. pt. 3, 1866, 

 p. 565, pi. Ixv. Hgs. 1-8 ; Hedley, Rec. Austr. Mns. iii. 1899, 

 p. 134. 



Nausitq^ria manni Hedley, Rep. Austr. Ass. Adv. Sci. viii. 

 1901, p. 248. 



Locality. — Brisbane, Queensland. Specimens forwarded by 

 Mr. E. A. OuUen, Engineer for Harbours and Rivers. From 

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

 {^EucalyptiLs panicidata) and Pine {Araacaria, cunninghamii). 



Remarks. — Of this species, already recorded by Hedley from 

 Cooktown, in the north of Queensland, the holotype, from 

 Singapore, is in the Museum collection. Unfortunately, it has 

 been allowed to dry, but it has been possible, by soaking it in 

 water, to extract the valves and pallets and to restore the siphons 



Text-figure 2. 



Teredo mannii ( VVrig.lit), from Biisbaiie. 



A. Outer, 1?. Inner surface of pallet. C. Siphons and associated structures. 

 The flesh}^ collar has been divided and the right pallet removed. 



to something like their original form. In all the characters thus 

 ascertained the specimens now recorded from Brisbane show" a 

 close resemblance to the holotype. 



The most characteristic feature of the species is the form of 

 the pallets (text-fig. 2, A & B). The blade or expanded portion 

 is roughl}^ crescentic in shape. The concave distal edge has a 

 convexity in the centre, giving it somewhat the outline of a 

 cupid's bow, and the convexity is usually, but not always, incised 

 by a narrow median notch. The inner surface of the blade is 

 flat, the outer excavated distally ; along the margin of the 

 excavated area is a border of dai-k brown horny substance which 

 is continued along the distal margin of the inner surface. The 



