450 CEYLON PEAEL OYSTEE EEPOET. 



Part IV. (Polyzoa), p. 113, 1. 3, for " Berenicea prominens, Lx. [= Ch. brong- 

 niartii]" read " Chorizopora brongniartii (Aud.)." 



IY. (Polyzoa), p. 114, 1. 17, for " cecilia" read " cecilii." 



IV. (Polyzoa), p. 116, 1. 5, for " avicularis, n. sp.," read " inclusa, n. sp." 

 [name changed to avoid possible confusion with Cellepora avicularis]. 



IV (Polyzoa), pp. 117, 11 8, for " Rhyncopora" read " Phynchozoon." 



IV. (PoLYZOxi), p. 121, 1. 6, for "nitida, n. sp." read " adhaerens, n. sp." [to 

 avoid possible confusion with Membra niporella nitida, Johnst.]. 



IV. (Polyzoa), p. 122, 1. 18, for "fissa, n. sp." read " gallensis, n. sp." [to 

 avoid possible confusion with Schizotheca fissa, Bk.]. 



IV. Add to Polyzoa : Alcyonidium mytili, Dalyell. Galle. 



IV. (Solitary Corals), p. 192, Professor Bourne adds : 



A fixed specimen of Cyathotrochus herdmani has been found (off Galle, 100 

 fathoms). This necessitates the following correction in the diagnosis of the genus : 

 For " Corallum simple, free, without a trace of adherence" read " Corallum simple, 

 free or fixed by a narrow base, the basal scar completely filled up in the free forms so 

 as to form a short laterally compressed cone." 



Part IV (Polycileta), p. 248, 1. 4, for " 1887 " read " 1878." 



IV (Polycileta), p. 281, 1. 29, for " acquabilis" read " aequabilis." 



IV (Polych^ta), Plate VI., fig. 139. An extra bundle of setse has been 

 inserted by the lithographer on the right side in front of the normal 

 row of fascicles. 



,, IV. (Polych^eta), add : A few additional forms have been examined by 

 Mr. Arnold T. Watson, who reports the following : 



(l) Palmyra herdmani, n. sp. Found in the tube of the large Foraminifer, 

 Ramulina herdmani, from Galle. The characters are: Head, darkish brown and 

 iridescent, distinctly globular (instead of more or less rectangular, or an oval placed 

 transversely to the body). Eye-spots four, light brown, oval; posterior pair contiguous 

 and situate slightly behind apex of the head ; anterior pair just beneath a very short, 

 stumpy, cone-like, unpaired tentacle. (Immediately behind the head was a brown, 

 oval capsule, or caruncle, which may possibly have been adventitious.) Head and 

 caruncle almost completely hidden beneath the pale yellow palea?. Back completely 

 covered, the inner edges of opposite flabella overlapping in the middle. No elytra 

 apparent. Dorsal paleee serrated on edge, about 21 in the largest flabella, almost 

 linear at the outer edge of flabellum, gradually becoming falciform towards the centre. 

 Both dursal paleaa and ventral serrated compound setse somewhat similar to those 

 of Palmyra dehilis, Grtjbe, but the appendix is slender and very much longer. 

 Ventral cirri springing from a basal tubercle on neuropodial lobe and bearing a 



