IN THE LOWEB TERTIAUT STEA.TA OP NEW ZEALAND. 215 



distinct, palms tougue-shaped. Length of spicule 'OSl mm., of 

 palms 'OlS mm., width across palms "02 mm., extreme width of 

 shaft '015 mm. Figs. 8 and 9 represent the lateral and front 

 views respectively of the same spicule. It appears to be distinct 

 from any spicule yet described, and may be termed provisionally 

 Pseudohalichondria deformis. 



Fseudohalichondria (a). — PI. XI. fig. 10. Equianchorate 

 spicule with irregularly expanded shaft armed with spines ; the 

 ends also are armed with prominent conical spines alike on the 

 anterior and lateral teeth. Length of spicule '033 mm., of the ends 

 •Oil mm., thickness of shaft "016 mm. Only a front view of this 

 spicule has been recognized. 



PseudohalicJiondria (b). — PI. XL figs. 11, 11. Spicules with 

 strongly curved shafts armed on the exterior or convex surface 

 with stout conical spines. The anterior and lateral teeth at both 

 ends are also strongly spined. Length of spicule '02 to "027 mm., 

 thickness of shaft '0087 mm. Only the lateral view of this form 

 is known. 



Pseudohalichondria Oamaruensis, n. sp. — PL XI. figs. 12, 13. 

 Equianchorate spicule with strongly curved shaft, widest in the 

 middle and spined ; at either end of the spicule a semicircular 

 notched border and a very prominent curved anterior tooth. 

 Length of spicule "0267 mm., of the ends -0083 mm., width 

 015 mm., greatest width of shaft "013 mm. Eig. 12 is an 

 oblique, and fig. 13 a lateral view of the same spicule. It is a 

 distinctly new form, and may be termed Pseudolialicho7idria 

 Oamamensis. 



PL X. fig. 45. Equianchorate spicule having a shaft with an 

 elbow-like curve and armed with stout occasional spines. Teeth 

 short, incurved. Length of spicule "043 mm., of the teeth -01 mm., 

 thickness of shaft '0086 mm. Only a lateral view known. 



Sceptrella or Chessman Flesh- Spicules q/Latruneulia, Bocage. 



These spicules, for which the name of " Sceptrella" was pro- 

 posed by Mr. Carter (Ann. & Mag. Nat. Hist. s. 5, vol. iii. 1879, 

 p. 358), consist of an upright cylindrical shaft or axis, furnished 

 with stout spines, spined plates, discs, or drums, usually arranged 

 in whorls at irregular intervals, whilst spines either single or in 

 groups radiate from the upper and lower ends of the shaft. The 

 spines themselves not infrequently are provided with smaller 



