I'LATE III. 



pinnata n. sp. Group of 2 spicules, <? and /> ■ 350. 



2. Lepto i >rmosa n. sp. Group of 4 spicules. a, />, c and d / 25c. 



.7 studeri n. sp. Group of 5 spicules, <?, /-. c, </ and <■ 12c 



4. Platycaulus sibogic n. sp. Group of 4 spicules ,1, /'■. c and </ :■ 120. 



