MARINE WOCD-BORING ANIMALS. 



399' 



of the width. The distal edges of the segments are acutely 

 V-shaped (this may be partly but not altogether due to their 

 being worn away), and no trace of serration can be seen in any of 



Text-fig-ure 4. 



Xylotrya saulii (Wright). Syiit3'pe from Callao. 

 A. Riglit, B. Lelt valve of shell. 



Text-figure 5. 



Xylotrya saulii (Wright). S^-ntype from Callao. Pallet. 

 Text-fiaure 6. 



Xylotrya australis, sp. ii. Syntype from Auckland. 

 A. Right, B. Left valve of shell. 



the specimens. The stalk is smooth. The soft parts are un- 

 known. The valves measure up to 7-3 mm. in length and a little 

 less in depth. 



