40 THE EOTIFERA. 



specimens of a fine Eiichlanis most closely resembling Ehrenberg's drawings of trlquctra, 

 and differing from mine in having its ventral plate perfectly flat, and apparently attached 

 closely to the dorsal plate. Certainly it had no flanges bent down like those given in 

 fig. 4 c, and its dorsal ridge was decidedly higher. 



E. Weissei, Eichivald (107), (PL XXXIII. fig. 85). Eichwald describes the lorica as 

 longer than that of dilatata, narrower in front and broader behind. His figure, which 

 I have copied, makes the lorica a narrow truncated oval, the anterior end of which is 

 bounded by a shallow circular arc, and the posterior end hollowed into a deep sinus. The 

 foot has four joints, and very long tapering toes ; the eye is dark red and nearly trian- 

 gular. Both description and figure are very imperfect. 

 Habitat. Ditches at Reval. 



E. (?) LYNCEUS, Ehrenbcrg (42), (PI. XXXIII. fig. 82). SP. CH. "Lorica oval, 

 sivollcn, eniiwaiyping the body, deeply furroioed, with two anterior spines." Ehrenberg 

 says that lynceus, though very like the crustacean after which he has named it, is an 

 unmistakable Rotiferon : having (apparently) single-toothed jaws, short oesophagus, a 

 thick and almost circular stomach, with two gastric glands, an obvious antenna lying 

 between the spines, a red cervical eye, and a long forked foot. He further notices that 

 there is, at the anterior end of the dorsal surface, a detached portion of the lorica, which 

 is flattish and triangular, and which bears the two spines on its front edge. Ehrenberg 

 says that the lorica is cleft down the whole length of its ventral surface ; and his figure 

 shows a wide gap between its edges. 



If the lorica has been rightly described and figured, it would be difficult to say where 

 this creature should be placed ; but as Ehrenberg has made mistakes on this very point 

 in the Euchlanid(2, it wiU be as well to leave the name unaltered tiU the animal has 

 been met with again, and thoroughly studied. It is vei-y unhkely to prove to be a 

 Euchlanis. 



Length, ^J^^ inch. Habitat. Near Berlin. 



E. (?) liicAEiNATA, Pcrlij (124), (PI. XXXIII. fig. 81). The Icrica of this Eotiferon, 

 according to Perty, covers only the back and sides of the body, and is absent from a 

 central strip of the ventral surface.' It is moderately broad in the middle, diminishing 

 towards either end, truncate and spineless m front, and with its hinder portion hke that 

 of a Salpina, whose alvine processes had been rounded off. Down the back run two long 

 parallel ridges, which, in Perty's dorsal and side views, are precisely those of a Salpina. 

 The foot is remarkable for the great length of its middle joint, and the shortness of the 

 last joint and toes. The drawing of the corona is incomprehensible, and that of the 

 internal structure little better. Under these circumstances it is impossible to decide to 

 what genus the animal really belongs. 



Length (total), ■,\- inch. Habitat. Near Bern. 



E. coKNUTA, Dujardin {40)=Monostyla cornuta (vol. ii. p. 98). 



E. ovALis, Dujardin {iO)=E. macrura (vol. ii. p. 91). 



E. HiprosiDEROs, Gosse (54). Cancelled by Mr. Gosse. 



E. EMAEGiNATA, Eichwold (167)= Cathypina luna (vol. ii. p. 94). 



E. BEACHYDACTYLA and E. TETKAODON, Schvuirda (134, 135). See note 1, Sup', p. 8. 



E. AMPULiFOEMis, Herrick (175). Somewhat flask-shaped; dorsal plate carinate ; 

 ventral plate with a cordate posterior opening. Foot four-jointed ; toes half the length 

 of the lorica. Figure and description imperfect. 



Apodoides stygius, Joseph (96). Dr. G. Joseph discovered this Eotiferon, for which 

 he has formed a new genus, in the stalactite caves of Krainer. 



' See note, vol. ii. p. 89. 



