18 



1914, Joshua, E. C, ''Victorian Holothuroidea, with 

 Descriptions of New Species." Proc. Roy. Soc, Victoria, vol. 

 xxvii. (new series), part i., Melbourne, 1914. 



There are three specimens collected by Dr. J. C. Verco. 

 One of us has already commented on the evidently close 

 relationship between this species and C ucinnaria parva, Lud- 

 wig. The South Australian specimens appear in all respects 

 similar to those collected in Victoria. 



CUCUMARIA STRIATA, n. Sp. 



The two specimens in the collection were obtained by Mr. 

 J. W. Howard in August, 1888, from the Great Australian 

 Bight. 



The length is 25 mm. by 12 mm. in breadth. The form 

 is cylindrical, curved dorsally. The podia are confined to the 

 radii, and form on each of the two dorsal radii four fairly 

 regular rows, which diminish anteriorly and posteriorly to two 

 or three rows only. On each of the ventral radii there are 

 five rows, which also lessen in number towards the ends of 

 the body. 



The colour of the specimen is inter-radially of a smoky- 

 black, with dirty-white radii, giving a striped appearance. 



The calcareous ring is of the usual generic configuration. 

 The deposits are in the form of delicate tables (plate iii., fig. 

 2), the disc of which is markedly concave, and is perforated 

 with from four to ten holes. The spire, which does not 

 always arise from the centre of the disc, consists of two rods, 

 joined by a transverse beam in the vicinity of the disc, and 

 converging for some distance until they become fused, 

 enclosing a small perforation. Subsequently they again 

 diverge, and terminate in two points only. There is a con- 

 siderable variation in the number of holes in the disc, but 

 the form of the spire is very uniform. These deposits are not 

 very thickly disposed in the perisome. 



The rather striking colouration and peculiar spicules 

 would appear to separate the species from any hitherto 

 described. 



CuCUMARIA MUTANS, JosllUa. 



1914, Joshua (antea), Cncumaria mutcrns. 

 There are two quite typical young individuals collected 

 by Dr. J. C. Verco. This Holothurian is peculiar from the 

 circumstance that during life (and generally in alcohol) it 

 is, while young and half-grown, of a deep blue-black colour, 

 which almost disappears as the animal advances in a,cre„ 

 mature specimens being nearly white. 



