374 riuJF. K. A. Mixciiix ox THE BRITISH [Dec. 13, 



iSf/con'hisa corallorrhiza Haeekel, 1870, 1. c. p. 249. 



Ascandra rariahills Haeekel, 1872, Kalkschwamnie. ii. p. 106. 

 iii. pi. 16. ligg. 4 a-4 ? and pi. 18. 



Ascortis coraUorrhha Haeekel, 1872, 1. c. p. 73, pi. 11. fig. 4, 

 pi. 12. figg. 4 rt-4?. 



Leucosolenia hotryokles Bowerbank, 1874, Mon. Brit. Spong. 

 iii. pi. iii. figg. 1—4. 



Leuconia somesli Bowerbank, 1874, 1. c. p. 334, pi. xci. 

 figg. 6-17. 



Ascandra tenuis Schuflner 1877, Jena, Zeitsclu-. xi. (n. F. iv.), 

 p. 406, pi. XXV. fig. 8. 



Ascandra rariahilis BoAverbank and Korman, 1882, Mon. Brit. 

 Spong. iv. p. 227. 



Ascandra hotryoides Fristedt, 1885, K. Yetensk.-Akad. Hand- 

 lingar, xxi. no. 6, p. 9. 



Leucosohnia rariabiUs Topsent, 1891, Arch. Zool. Exp. (2) ix. 

 p. 525. 



Leucosolenia variabilis Topsent, 1894, Rev. Biol. Kord Finance, 

 vii. p. 2, 



Leucosohnia variabilis Minehin, 1896. Ann. Mag. Kat. Hist. 

 (6) xA-iii. p. 359. 



Ascandra rariabiUs Breitfuss, 1898, Arch. f. ISTatnrges. Ixiii. i. 

 p. 215. 



Ascandra variabilis Breitfuss. 1898, Arch. f. Naturges. Ixiv. i. 

 p. 286. 



Ascandra corallon'hiza Breitfuss, 1898, 1. c. p. 285. 



Ascandra variahilis'&veMn&B. 1898, Mem. Acad. St. Petersbonrg, 

 (8) xi. p. 16. 



Ascandra corallorrhiza Breitfuss, 1898, 1. c. p. 9. 



Ascandra variabilis Breitfuss, 1898, Ann.". Mus. Zool. St. 

 Petersbonrg. 1898. p. 28. 



Ascandra coraUon-hiza Breitfuss, 1898, 1. c. p. 17. 



Leucosolenia trcriabilis Minchin, 1900, in Lankester's Treatise 

 on Zoology, ii. Sponges, p. 5, fig. 5. 



Ascandra variabilis Arnesen. 1901,Bergens Mus. Aarbog, 1900, 

 No. 5. p. 15. 



Ascandra. corallorrhiza Arnesen, 1901. 1. c. p. 14. 



Leucosolenia variabilis Bousseau, 1903, Mem. Soc. Malac. 

 Belgique, xxxvii. p. 8, fig. 4. 



Leucosolenia variabilis Allen. 1904, J. Mar. Biol. Assoc, n. s. vii. 

 p. 185. 



(a) External Characters. 



L. variabilis is known to me both in the spreading and the 

 bushy form. Of the former type I have two typical specimens, 

 both from Eoscofi^ A portion of one of them has been figiu-ed 

 by me elsewhere [16, p. 5, fig. 5]. It was growing on a granite 

 rock, and an attempt was made to detach the piece of stone to 

 which the sponge was attached by means of hammer and chisel ; 

 as a result of this somewhat violent treatment, the slab broke 



