60 SPONGES. 



12. — <i. it'aselliitu (B. a., iigs. 21-27.) Several specimeus. 



Vi.—Lcwosoh'nhi ctDitorta, Br. (B. S., PI. H, figs. 5-lU.) Two 

 speciiueus. Obs.- — Dr. Bowerbank's illustration of the linear spicule (fig. 10) 

 is defective. There are two forms quite different from each other and 

 from Dr. Bowerbank's figure. See Hieckers " Die Kalkschwamme,' 

 under the name of Aacdiidni coutortd, ■' Atlas,'' tab. 14, lig. 6, &c. 



14. — Sijcun rlHij)}^!^^, Schmidt. (Spongieu Adriat, Meeres, 1862, s. 

 14. tab. 1, tig. 2.) Two specimens. 



Other Organisms, etc. 



1."). — ('liinnlotti iliiiitiita (Echinoderm Synaptidai) and Compound 

 tuDicdtc, gehitiuous without spicules, (SynascidiaB Giard.) ? sp. (Jhs. — 

 Examine the surface of the Cliirodota under water with liu. focus and 

 high ocular to see the anchorhke calcareous spicules, which are beautiful 

 objects under the microscope. 



1(5. — llesidue at the bottom of the jar, chietiy consisting of minute 

 i'oruminifera. 



Observations. 



The specimens of Calcispougiso are very good, and well worth 

 ])reberving. Prof. Hteckel's work entitled "Die Kalkschwamme" is 

 essential for studying the species. 



