ACTINOPOUOUS HOLOTHUEIOIDEA. 



The calcareous deposits in the solo (text- 

 fig. 41) are very numerous and crowded, so 

 that in cutting out a piece with scissors, a 

 peculiar grating sound is heard. They con- 

 sist of plates of various irregular shapes, 

 bearing from a few to many knobs on the 

 surface. The ends of the knobs often join 

 to form the characteristic fenestrated plates, 

 parallel to the original plate. Tlic edges of 

 these plates arc more or less scalloped. 



From tlie only specimen on hand the 

 number of tentacles, etc., could not be 

 ascertained. 



Textfig. 41. 



Psolus ascidiiformis. 

 Knoblicd phite from sole. 

 X 21)0. 



53, I*tioliis squamafits (_Mlllei;). 



(PI. VU., figs. Gl— G2 ; textfig. 42). 



Hdothurm squamata Mulleii 1788, T.if. X., Fig. 1— .3. 



Cuvicria aqtiamafa? Jmg-eu 1833, p. 20. — ? Blajxville 1834, p. 192. — 

 DiBEN ocli KoREN 1844, 1313. 222—6, Taf. IV., Fig. 35— 41.— Korex 1845, 

 Fig. 1— lb*.— LiJTKEK 1857, p. G9.— Selenka 1867, p. 343. 



Psdns sqitamafiis Andrew and Barret 1857, p. 45. — Sars 1858, p. 1G9. 

 — Sars 1861, pp. 112— 3.— Semper 1868, pp. 62, 272.— Bell 1882, p. 645.— 

 Lamtert 1885, p. 119. — K£-kenthal und Weissenborn 1886, p. 780. — Lud- 

 wiG 1889— '92, p. 350.— Bfeffer 1890, pp. 88, 95.— Nordg.vard 1893, pp. 

 5, 10.— NoRM.vx 1893, p. 349.— Meissnep. und Collin 1894, p. 345.— GEmo 

 1894, p. 4.— Sluiter 1895, p. 81.— Appellof 1896, p. 12.— Grieg 1897, pp. 

 4, 7, 11, 12, 24.— LuDwiG 1898«, pp. 58, 61.— Bideknap 1899, p. 106.— 

 LuDWiG 1900, p. 158.— Clark 1901^7, p. 171.— Clark 1901(^, p. 491.— 

 Ostergren 1902, p. 10.— Perrier 1902, pp. 513—4. 



Lophotlmria squamata Vekeill 1873- 



