CHAP, in.] THE CRUISES OF THE 'PORCUPINE? 115 



and this he associates with Suberites, Tethya greatly 

 restricted, and one or two other generic groups, to 

 form a family the Suberitidinse, a part of the old 

 order Corticatse, which order he now proposes to 

 dismember. I doubt if this arrangement will hold 

 good, for the silicious sponges whose skeleton con- 

 sists mainly of radiating sheaves of long spicules, 

 form a conspicuous and natural assemblage. Stylo- 

 cordyla is evidently nearly related in habit and 

 general character to the Mediterranean stalked 

 sponge figured by Schmidt under the name of 

 Tetilla enplocamos. 1 



Eoraminifera are not very abundant in the cold 

 jarea, though here and there in isolated patches 

 large numbers of large and remarkable forms came 

 up on the ' hempen tangles.' These were principally 

 of the Arenaceus type. On one occasion, at Station 

 51, one of the intermediate dredgings between the 

 rt r arm area and the cold, the tangles brought up 



multitude of tubes three-quarters of an inch to 

 in inch long, composed of sand- grains cemented 

 together, and with a slight appearance externally of 

 )cading, as if they were divided into segments. 

 During the * Lightning ' excursion the year before, 

 bn the middle bank along with the specimens of 

 Terebratula cranium, we had found in abundance a 

 sandy Lituola with very much the same appearance, 

 except that at one end the Lituolce had a promi- 

 lent mouth, and on breaking them open this 

 nouth was repeated, definitely moulded of peculiarly 



1 Die Spongien der Kiiste von Algier. Von Dr. Oscar Schmidt 

 J rofessor der Zoologie und vergleichenden Anatomic, Director des 

 'audschaftliuhen zoologischen Museums zu Gratz. Leipzig, 18(58. 



i 2 



