314 L. E. CRAWSHAY. 



miiltispiculous. The remainder of the reticulum is somewhat irregular. 

 Spicules exceptionally uniform, with an almost entire absence of slender 

 forms. Dimensions from 120 by 6 ^ to 140 by 9 /x. The measure- 

 ments shown by Bowerbank are 130-145 ^a by 10 fx. 



Reniera sp. (C). 



At Position 62, one specimen. 



Depth, 50 fath. 



The specimen is a fragment torn from its base, consisting of a thimble- 

 shaped process, 25 mm. in height by 17 mm. in width, with an osculum 

 of 5 mm. in diameter at the summit. Texture soft and flexible. 

 Skeleton rather irregular, with spongin very little developed. Average 

 measurement of large oxea about 190-200 fx by 8-10 ^. A few styli 

 of about the same width but a little shorter are intermixed abnormally, 

 also very occasionally short smooth strongyla of the same width. 

 Slender oxea rather numerous and scattered, ranging in size from about 

 100 by 2 ^ to 150 by 3 m- 



POECILOSCLEPJDAE, Topsent. 

 ESPERELLINAE, Kidley and Dendy. 



Esperiopsis paupera (Bowerbank). 



At Position 3, one specimen, forming an irregular growth on 

 Sertularella gciyi. Length 25 mm. 

 „ 33, one small specimen on dead Peden shell, 11 mm. 



by 5 mm., with one osculum, with ova at base. 

 „ 36, one specimen, forming a small column, 9 mm. in 



height, with narrow spreading base. On Porella 

 comjjrcssa. 

 „ 38, one specimen, an irregular creeping growth, about 



10 mm. by 4 mm. in extent, with a free raised 

 lobe. On Pallasia tube. 

 „ 49, small patches on Inachus leptochirus. 



Depth, 40-47 fath. 



Ridley and Dendy (31) have included the Isodictya imupcra of 

 Bowerbank, with a query, among the synonyms of his /. edivardsi, and 

 it may be that the two forms are merely varieties of the same species. 

 I have retained, however, the former name for the five specimens here 

 considered, because in no case do the main skeleton spicules approxi- 

 mate to those shown by Bowerbank for /. edicardsi, wdiile their differ- 

 ence from those of ^xn^j^cra is inappreciable. Excepting that from 



