ACTINOPODOÜS HOLOTHUKIOIDEA. 267 



flukes. Besides these, the skin is closely packed everywhere with 

 large irregular tables {b, c). These have large disks which have 

 many holes. The disks measured presented the following dimen- 

 sions : 0.30 mm. x 0.19 mm.; 0.40 mm. x 0.18 mm.; 0.45 mm. x 

 0.19 mm.; 0.42 mm. x 0.20 mm.; 0.40 mm. x 0.25 mm.; 0.47 x 0.16 

 mm. Many of them show prolongations in two, very often in 

 three diameters. Anteriorly and posteriorly, they become more 

 or less elongated. Many disks show a change into wine-red 

 substance, as stated for A. roretzli. On the disk there arises a 

 spire which is quite high, 0.18— 0.20 mm., and consists of three 

 or four, oftener four, columns. One observes from seven to nine 

 cross-bars, but these have a very peculiar arrangement : i.e., those 

 on the four sides of the spire are at different levels, so that in trans- 

 parent views, the openings to the outside of the spire appear to be 

 alternately disposed on different sides. Wine-red corpuscles are 

 present but not in such a profuse quantity as in some other 

 species of Anhjroderma. 



RemarU :— This is a somewhat large form and appears to be 

 near A. mnroccanum Peeeiee, but the calcareous spicules are quite 

 different. I can not identify it with any hitherto described spe- 

 cies, and am obliged to make a new species of it. 



69. Aukyrodevma roretvif v. Mai;enzellei^ 



(PI. VIIL, fig. 78 ; textfig. 55). 



Anhjroderma roretzii v. Maeexzeller 1881, pp. 121— H, Tuf. IV., Fig. 

 4.— Lampert 1885, p. 213, Fig. 69.— Ludwig 1889— '92, p. 355.— Ludwig 

 1891, 1). 584. 



Anh/rocJerma {Ho2>Iodachjla) rorehii Théel 188') a, p. 49. 



