1910.] PROM KERIMBA ARCHIPELAGO. 177 



in colour. There are some small points of difference in the 

 spicules. 



The tables have a larger base than in H. atra and have 

 generally a few small peripheral holes. The edge of the base is 

 often spinous. Fenestrated plates similar to those in H. atra are 

 rare, but there are numerous small rods which branch dicho- 

 tomously and which may represent stages in the disintegration of 

 larger fenestrated plates. 



Diameter of tables 44- 5 fx. 



Length of branched rods 1 1 p. 



There are numerous Polian vesicles and stone canals as in 

 H. atra. 



General distribution. Amboina, Venezuela, East Africa. 



HOLOTHURIA CURIOSA Ludwig. 



Holothuria curiosa Ludwig, 1875 (12); Lampert, 1885 (18); 

 Theel, 1886 (20); Sluiter, 1901 (28). 



One specimen from Station IX. Matemo Is. 

 Length 32 mm.; breadth 12 mm. 



The colour of this specimen does not agree with Th^el's descrip- 

 tion of the species. The dorsal surfaee is dark brown over which 

 are scattered numerous yellow spots. The ventral surface is much 

 lighter. There is a small light area around each end of the body. 



This specimen resembles Holothuria curiosa very closely in most 

 respects. The deposits are very similar to those described by 

 Theel. The tables in most cases have rudimentary spires, but in 

 a few instances complete spires are present consisting of four- 

 upright rods surmounted by a spinous ring. 



Diameter of tables from 37 /u to 48 ll. 



Length of buttons 41 p. 



General distribution. Bowen, Fiji, New Guinea, Philippines, 

 Indian Ocean. 



Holothuria dofleinii Augustin. 



Holothuria dofleinii Augustin, 1908 (30). 



One specimen (much flattened) from Station I. Tunghi Bay. 

 Length 85 mm. 



I have no hesitation in placing this specimen in Augustin's 

 species. 



The colour of the body is yellowish white. The papilla? have 

 a brown colour and there is a dark brown ring around the base of 

 each papilla. 



The deposits agree with Augustin's description and consist of 

 tables and buttons. The tables (text-fig. 17 A &, G) generally 

 have four large central holes and four smaller peripheral holes. 

 In a few cases the peripheral holes are moie numerous. The 

 spines are short and are generally imperfectly formed. In the 

 most perfect specimens the spire has a rectangular top which 

 bears blunt spines. In the majority of instances, however, 



Prog. Zcol. Soc.— 1910, No. XII, 12 



