IN THE LOWER TEKTIAET STEATA OF NEW ZEALAND. 22J 



whorl •023 mm., thickness of shaft "01 mm. A detached recent 

 spicule from near the Seychelles has been figured by Mr. Carter 

 which has considerable resemblance to this fossil (Ann. & Mag. 

 Nat. Hist. s. 5, vol. iii. pi. xxis. fig. 20). Spicules of the same type 

 but considerably smaller also occur in Latrunculia (?) acerata, 

 Kidley and Dendy (Chall. Eep. vol. xx. p. 239, pi. xxix. fig. 3 5). 

 The present fossil indicates a distinct species, which may be 

 termed Latrunculia obtusa. 



Latrunculia (t). — PI. XI. fig. 33. Shaft cylindrical, with a 

 slight circular expansion at the base ; slightly above the middle 

 a thin-edged circular disk, and a similar but slightly smaller disk 

 at the summit of the spicule. The surface appears to be smooth 

 throughout. An axial canal extends through the shaft. Length 

 of spicule '026 mm., width of whorl '17 mm., thickness of shaft 

 •005 mm. This spicule is of the same character as the preceding, 

 but the upper disc is terminal. 



Latrunculia (u). — PI. XI. fig. 45. Spicule with stout short 

 shaft, angular and pointed at the lower end, and at the summit 

 a dome-shaped apex. In the upper portion are two whorls of 

 rounded or ovate nodes, whilst at the lower there are two pairs 

 of elongate ovate processes extending horizontally from the 

 shaft. Length of spicule '033 mm., greatest width -028 mm. 

 An axial canal traverses the shaft, terminating above with a 

 small inflation. This peculiar form varies considerably from the 

 normal flesh-spicules of Latrunculia, bat it seems more nearly 

 allied to these than to the spicules of Thoosa described below. 



FlasTc-shaped Flesh- Spicules q/ Latrunculia (?), Hocage. 



Latrunculia (v). — PI. XII. fig. 1. Spicule with a depressed 

 globular body, a short neck, and a spined summit. The globate 

 portion is studded with stout short conical spines, obtusely 

 pointed and projecting directly outwards, the neck is without 

 spines, whilst the summit is slightly inflated and covered with 

 somewhat claw-shaped spines. At the apex is a single vertical 

 spine. Length of spicule '043 mm., thickness of body "035 mm. 



PL XII. flg. 2. Spicule with subangular body with wide base. 

 The upper portion conical. The body is armed with long, stout, 

 obtuse spines, near the summit is an inflated portion covered with 

 hooked spines, and at the apex is a prominent vertical spine. An 

 axial canal extends from the apex to a little below the centre of 



