PENNATULIDA. 



A ? in a column means that there are indications which make it probable that the species in 

 question might be entered as found. 



The table shows how great the agreement is between the most widely separated parts of the 

 North Atlantic territory, the west side of Norway and the east side of North America. Six of the 

 twelve species of Norway are known from America, and there is some probability that two more 

 may now be added. Species which previously had to be regarded as American* (Anthoptilum murrayi, 

 Distichoptilum gracile] have proved to be distributed quite to Europe; species which were hitherto only 

 known as far more southern ones (even from south of the equator), as Anthoptilum grandiflorum, are 

 found in the Davis Straits; of the other five species found there, four occur both at America and 

 Europe ; but one (Penn. prolifera] is as yet only known from these Straits. Apart from the quite imperfectly 

 known Bathyptilum carpenteri (only taken in one mutilated fragment) and Protoptihim denticulatmn, 

 no form peculiar to the northern part of the Atlantic south of the ridges has appeared; of the other 

 14 species from this region six are found both at Norway and America, four (for the present) at Nor- 

 way alone, and three at America alone; but of the last-mentioned species two also occur off the west 

 coast of southern Europe. 



It seems likely that continued researches inside the Atlantic area will show that the uniformity 

 is still greater than I have been able to show here; so wide a distribution as is now known for 

 Anthoptilum grandiflorum, which has been found from off Buenos Ayres to far up in the Davis Straits, 

 further at the African coast off the Cape (and possibly near Tristan d'Acunha) will scarcely prove an 

 isolated phenomenon; several other Pennatulids of which we know that they may thrive in great 



