CHAP. II r.] THE CRUISES OF THE ' PORCUPINE: 1 ] 5 



and this he associates with Suberites, Tethya greatly- 

 restricted, and one or two other generic groups, to 

 form a family the Suberitidinae, a part of the old 

 order CorticatEB, 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 evplocamos} 



Foraminifera are not very abundant in the cold 

 area, 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 

 warm area and the cold, the tangles brought up 

 a multitude of tubes three-quarters of an inch to 

 an inch long, composed of sand-grains cemented 

 together, and with a slight appearance externally of 

 beading, as if they were divided into segments. 

 During the 'Lightning' excursion the year before, 

 on the middle bank along with the specimens of 

 Terehratula cranium, we had found in abundance a 

 sandy Lituola with very much the same appearance, 

 except that at one end the LituolcB had a promi- 

 nent mouth, and on breaking them open this 

 mouth was repeated, definitely moulded of peculiarly 



' Die Spongien der Kiiste von Algier. Von T)r. Oscar Schmidt 

 Professor der Zoologie und vergleichenden Anatomie, Director des, 

 Landsehaftliohen zoologisi;}ien Museums zu Gratz. Leipzig, 18G8. 



I 2 



