GENUS STUDERIOTES. 



Studeriotes mirabilis/ //. nom. ( = Studeria mirahilis, Thomson). 



The collection includes a specimen from the Andamans which is cer- 

 tainly one of the most remarkable of the many interesting representatives of 

 this sub-class that have been discovered within recent years. It is a cup-like 



Fig. 3. Longitudinal section of Sludenotes 

 mirabilis. — Natural size. 



Fig. 4. Tlie upper part of 

 one of the digitiform 

 polyp-bearing lobes or 

 branches of Studeriotes 

 mirabilis. — It shows the 

 terminal polyp much 

 larger than tlie others. 

 X 12. 



colony, with a large retractile polyparium. The cup is 45 mm. in height by 

 55 mm. in maximum diameter, and it is continued into a basal wisp (19 mm. 

 in length), which, however, shows no attaching disk. The specimen gave 

 indication of having been imbedded in the mud up to al^out the maximum 

 diameter of the cup. 



General Structure. — The most striking peculiarity of Studeriotes is that the 

 whole of the polyp-bearing portion is retracted within the exceedingly substan- 

 tial, densely spinose cup, the circular mouth of which is about 30 mm. in 

 diameter, and shows the tips of numerous finger-like polyp-bearing lobes or 



1 I have named this very interesting type in honour of Professor Th. Studer, of Bern, who 

 has contributed so largely to our knowledge of Alcyonaria. I gave a description of it at the Inter- 

 national Congress of Zoologists in Boston (.August, 1907) and at a meeting of the Eoyal Micro- 

 scopical Society, 18th November, 1908. See " Journ. Eoyal Micr. Soc," December, 1908. I had 

 named it Studeria, unaware that this name was pre-occupied for a sub-genus of fossil echinoids. 

 —J. A. T. 



