252 APPENbTX. 



under surface of scale deeply corrugated from pedicle 

 to apex ; upper surface nearly flat, slightly undulating 

 towards tlie pedicle, producing the appearance of 

 radiating strise ; cross striae due to structure between 

 the superposed membranes. Under a power of 4000 

 diameters an appearance of cross hatching is obtained 

 on the main longitudinal ribs. 



Plate LXIX. 



Templetonia crystalUna. 



Scale. — Irregular strife or corrugations nearly 

 parallel to the pedicle, broken up by alternate lighter 

 and darker portions, giving an indication of separate 

 " notes of exclamation " markings under direct 

 achromatic illumination, each darker portion with a 

 bright nucleus ; under surface of scale irregularly cor- 

 rugated from pedicle to apex; upper surface slightly 

 undulating, the irregular breaking up of the longi- 

 tudinal markings due to structure between the super- 

 posed membranes. 



Plate LXX. 



Seira domestica. 



Scale. — Irregular compound strise or corrugations 

 from pedicle to apex, broken up into separate " notes 

 of exclamation " markings, each marking with a well- 

 defined dark margin at one end and on the sides, 

 shading at the end nearest the pedicle into the top of 

 the next marking ; indications of cross stria3 between 

 and at right angles to the " notes of exclamation " 

 markings. Under surface of the scale corrugated, 

 upper surface undulating; breaking up of the com- 

 pound irregular striee, due to structure between the 

 superposed membranes. 



