426 JANE STEPHENS : ATLANTIC SPONGES 



Family Chondrosiid^;. 



Chondrosia reniformis Nardo. 

 Chondrosia plebeja Schmidt. 



Sub-order HALICHONDKINA. 



Family Axinellid^e. 



Hymeniacidon caruncula Bowerbank. 

 Leucophloeus styliferus n. sp. 



Family Pcecilosclerid^e. 



Sub-family ectyonin^e. 



Hymedesmia baculifera (Topsent). 

 Hymedesmia parva n. sp. 

 Microciona similis n. sp. 

 Microciona tenuis n. sp. 

 Pocillon hyndmani (Bowerbank). 

 Clathria lobata Vosmaer. 

 Clathria rhaphidotoxa n. sp. 



Sub-family myxillin^e. 



Myxilla simplex (Baer). 

 Tedania scotise n. sp. 



Sub-family mycaliN/E. 



Mycale simonis (Ridley and Dendy). 

 Mycale sp. 



Esperiopsis informis n. sp. 

 Homoeodictya compressa (Esper). 

 Homceodictya elastica (Vosmaer). 

 Homoeodictya multiformis n. sp. 

 Homoeodictya alata n. sp. 



Family Haplosclerid^e. 



Siphonochalina tubulosa (Esper). 

 Siphonochalina anonyma n. sp. 

 • Pachychalina hospitalis n. sp. 

 Halichondria panicea (Pallas). 



