The President's Address. By Dr. C. T. Hudson. 171 



Next, my table shows clearly that in all cases a considerable 

 number, and in some the great majority, of the above-named fifty 

 typical Eotifera, range throughout Britain, France, North and South 

 Germany, Denmark, Switzerland, Hungary, and Kussia, so that we 

 may reasonably conclude that a considerable proportion, of the 450 

 known species, would probably be found in almost any part of Europe, 

 if they were diligently searched for. Here, for instance, is a list of 

 thirty well-known Eotifera, all of different genera, and all recorded in 

 at least five of the above eight European countries : — 



Floscularia ornata. 

 Stephanoceros Eichornii. 

 Melicerta ringens. 

 Limnias ceratophylli. 

 Lncinularia socialis. 

 Philodina roseola. 

 Motif er vulgaris. 

 Actiniirus Neptunins. 

 Asplanchna Helvetica. 

 Trinrthra mystacina. 

 Hydatina senta. 

 Notommata aurita. 

 Proales decipiens. 

 Furcularia forficula. 

 Eosphora aurita. 



Diglena catelUna. 

 Mastigocerca carinata, 

 Rattulus lunaris. 

 Dinocharis pocillum. 

 Scaridium longicaudum. 

 Salpina mucronata. 

 Euchlanis dilatata. 

 Cathypna luna. 

 Monodyla cornuta. 

 Colurus uncinatus. 

 Metopidia lepadella. 

 Fterodina patitia. 

 Brachionus urceolaris. 

 Armrma aculeata. 

 Notholca striata. 



Besides, many of the Eotifera are very tolerant of climate, and 

 appear to be able to live anywhere that they can get food. For 

 instance. Rotifer vtdgaris is to be found all over Europe, and at all 

 heights, thriving under moss near the top of the Sidelhorn, and on 

 the Tibia, at an altitude of 90U0 feet above the sea. It has been met 

 with also in Nubia, on the slopes of the Altai Mountains in Siberia, 

 in Ceylon at the top of Adam's Peak, in Jamaica, and in the Pampas 

 of La Plata. Brachionus pala has nearly as great a range, for it has 

 been found in many parts of Europe, in Egypt, at the Cape of Good 

 Hope, in Siberia, Ceylon, Jamaica, and New Zealand. Besides these, 

 Diglena catellina, Hydatina senta, Actinurus Neptunius, and a few 

 others, have all been met with in different quarters of the globe. 



But the distribution of the Eotifera presents us with other facts 

 quite as curious as these. For not only are European species to be 

 found ranging over Asia and Africa ; but America, and even Australia 

 and New Zealand, in spite of their ocean belts, possess the same 

 familiar creatures ; and, moreover, seem to have hardly any peculiar 

 to themselves. Here, for example, is a list of Eotifera that have 

 been found in Sydney by Mr. Whitelegge, and in Queensland by 

 Mr. Gunson Thorpe, M.E.C.S., of H.M.S. ' Paluma' :— 



Floscularia ornata. 



„ campanulata. 



,, chimxra (n. sp.) T. 



„ cornuta. 



„ Millsii. 



,, coronetta (var.) W. 



Melicerta ringens. 



,f conifera. 



GEcistes crystallinus. 



„ Janus 

 Limnias ceratophylli. 

 „ annulatus. 

 „ cornuella. 

 Lacinularia socialis. 



„ pedunculata (n. sp.) W. 



Cephalosiphon limnias. 



N 2 



