382 E. DEICHMANN, I. LIEBERKIND, AND TH. MORTENSEN 
3 specimens of 7—23 cm. length. Among stones at the shore. MASATIERRA 
9/4. 1917 (K. BACKSTROM). Further there are 6 specimens from the same island, 
collected among boulders in Bahia del Padre by C. SKOTTSBERG ?°/g 1908 
(Swed. Magell. Exp. 1907--09.) They agree in every respect with the detailed 
description, given by LUDWIG, to which I have nothing to add. It may, 
however, be desirable to give a figure of one of the larger specimens, LUDWIG 
having figured only the spicules. 

Fig. 1. Holothuria Plate Ludw. Nat. size. 
5 
2. Chiridota fernandensis Ludwig (?). — H. LupwiG 1898. Die 
Holothurien d. Sammlung Plate. Zool. Jahrbiicher; Suppl. IV, p. 446—448. 
Cumberland Bay 20—25 m., Masatierra, °/12 1916 (K. BACKSTROM). 
Clay. 4 small specimens, '/2—1 */2 cm. long, colour white. 
The identification of this Synaptid is not beyond doubt as the calcareous 
deposits have been totally dissolved, on account of preservation in formalin. 
Its general shape, however, makes it highly probable that it is this species, 
which was described by LUDWIG from this locality. 
3. Actinopyga difficilis (Semper). — olothuria diffictlis, SEMPER 
1868. Reisen im Archipel d. Philippinen I. Holothurien p. 92. -Taf. XXX. 
Fig. 21. — AHolothuria difficilis, H. P. BEDFORD 1898. Holothurians coll. by 
