CLASSIFIED LIST. 



Section **. Skeleton spicula acuate. 



7. Dictyocylindrus fascicularis. 



8. virsrultosns. 



4. Dictyocylindrus Howsei. 



5. hispidus. 



6. ,, aculeatus. 



Section ***. Skeleton spicula spinulate. 

 9. Dictyocylindrus pumilus. 



Section ****. Skeleton spicula cylindrical. 

 10. Dictyocylindrus stuposus. | 11. Dictyocylindrus rugosus. 



Section *****. Skeleton spicula acuate, and acerate or cylindrical. 

 12. Dictyocylindrus rectangulus. 



Genus XV. PHAKELLIA. 

 1. Phakellia robusta. | 2. Phakellia ventilabruin. 



Genus XVI. MICROCIONA. 



Section **. Skeleton spicula acerate. 



1. Microciona fictitia. 



2. Kentii. 



3. Microciona fraudator. 



4. tumulosa. 



Section *. Skeleton spicula acuate. 

 Sub-section A. Skeleton spicula smooth. 

 5. Microciona Ia3vis. | 6. Microciona simplicissima. 



Sub-section B. Skeleton spicula spinous. 



7. Microciona fallax. 



8. spinulenta. 



9. armata. 



10. Mici'ocioua ambigua. 



11. ,, jecTisculum. 



12. plumosa. 



Section ***. Skeleton spicula spinulate. 

 13. Microciona atrasanguinea. 



Genus XVII. HYMERAPHIA. 

 Section *. Skeleton spicula acuate. 

 1. Hymeraphia vermiculafca. | 2. Hymeraphia clavata. 



