REPORT ON THE HEXACTINELLIDA. 



431 



Table III. — contiuned. 



Static 



Locality. 



Depth 



in 



Fathoms 



Nature of 

 Bottom. 



Bottom 

 Tem- 

 perature 

 F°. 



Species. 



No. of 

 Speci- 

 mens. 



323 

 325 

 333 



343 



344 

 348 



E^sl of Monte Video, 

 East of Jlonte Video, 

 West of Tristan da Cvmha, 



South of Ascension, 



Off Ascension, 



Lat. 3° Iff N., long. 14° 51' W. 



1900 

 2650 

 2025 



425 



420 

 2450 



Blue mud, . 

 Blue mud, . 

 Globigerina ooze 



Volcanic sand. 



Volcanic sand, 

 Globigerina ooze 



33-1 

 32-7 

 35-3 



40-3 



1. Hi/alontma tciiuc, F. E. S., 



1. Holascus stellatus, F. E. S., 



1. Caulocalyz tener, F. E. S., . 



2. Hyalonema sp., . 



1. Aphrocallistes bocagci, Perc. Wright, 



2. Dictyonine, .... 



1. Aphrocallistes bocagci, Perc. Wright, 

 1. Malacosaccus unguiculatus, F. E. S., 



A glaijce at the map shows that the Hexactiuellida are by no means confined 

 to the few localities hitlierto chronicled. On the contrary they are widely distributed in 

 all the oceans, and the majority of the Challenger specimens alone have not been found 

 in localities where Hexactinellida were previously discovered, but in localities which arc 

 new for the group. 



As the table shows, it was only at 58 of the 275 stations {i.e., 21'1 per cent.) which 

 were explored with dredge and trawl that Hexactinellida were obtained. And although 

 these localities occur very uniformly over the whole route, nowhere is there any great 

 interval between two successive localities. The greatest distance occurs between Stations 

 94 and 124, but it has to be noted that this portion of the return route, which 

 included twelve stations where no Hexactinellida were found, was crossed at one point 

 (Stations 102 and 348, lat. 3° 10' N., long. 14° 51' W.), where (Station 348) a Hexac- 

 tinellid was discovered. 



If we follow the course of the expedition, we see that in the first place to the west of 

 the English channel (Stations IV., V.) some Hexactinellids were captured, and that after- 

 wards, to the south-west of the Canary Islands (Station 3), the stately PolioiMgon 

 amadou was fished up. The booty became somewhat richer off" the West India Island of 

 St. Thomas, where, at the two Stations 23 and 24, six difierent species were procured. 

 The next locality, ofi" the Bermudas Islands (Stations 33 and 5G), yielded in all eight 

 species. West of the Azores, and afterwards ofi" Cape Verde, two species were found. 

 After a long pause two forms were captured ofi" the coast of Brazil (east of the Eio San 

 Francisco). On the tour from Baliia to the Cape of Good Hope, a fragment of a 

 Hexactinellid was obtained near Tristan da Cuuha, while near Prince Edward Island 

 three difi'erent species rewarded the search. This last region seems indeed to have been 

 tolerably rich in Hexactinellida, since some degrees further east first two, and soon 

 afterwards six, difi'erent species, and ofi' Crozets Islands, again three were obtained. Near 



