88 THE ROTIFERA. 



DiASCHizA (?) cuPHA, Gosse (169), (PI. XXXI. fig. 31). 



[SP. CH. Much comincsscd ; dorsum squarely gihhous ; foot short, scarcely pro- 

 truding ; toes long, blade-shaped, slightly recurved, with claws abruptly shouldered. 



This huiicLbacked form needs fuller examination. I describe it from a single ex- 

 ample, just dead but not decomposed, in water sent from Birmingham. The depth, 

 compared with the width, of the animal is remarkable. The trophi are very long, but 

 ill-defined ; in the occiput is a short brain, carrying a flat, lens-shaped red eye on its 

 inner surface. The peculiar shape of the toes is shown at fig. 81, 6. I affix a mark of 

 doubt to the generic position, because I could not be gwite sure of the dorsal cleft. 



Length, ^ inch. Habitat. Birmingham, lacustrine. P.H.G.] 



DiASCHIZA (?) EAMPHIGERA, GoSSC (169), (PI. XXXI. fig. 32). 



[SP. CH. Lorica elliptical in outline, viewed dorsally ; highly gibbous, viewed 

 laterally; venter flat ; toes stout, lo7ig, decurved ; tro'phi projecting in form of a bird's 

 beak. 



The front terminates in an acute hooked beak, which is fomid to be the extremity of 

 the trophi, and apparently of the incus protruded. The whole manducatory apparatus 

 is of unusual dimensions, especially the fulcrum of the incus. (Fig. 32, b, represents 

 the trophi seen dorsally ; c, laterally.) I have not distinctly seen the dorsal cleft ; but 

 the line which passes along the back, at some distance from the edge, I presume to 

 indicate the bottom of such a cleft ; if it is not the base of a high carina. Two examples 

 occurred together in water from one of my window tanks. 



Length, -p'-^ inch. Habitat. Lacustrine. P.H.G.] 



Salpina ventealis, Ehrenbcrg (42), (PI. XXXIII. fig. 29). 



SP. CH. Occipital spines tvanting ; pectoral pair very short ; lumbar spine short, 

 decurved; alvine pair longer than the lumbar, straight; the lorica tvith a stippled 

 collar in front. 



This species closely resembles Mr. Gosse's macracantha ; but differs from it in having 

 a rather decurved lumbar spine instead of a straight one ; m its alvine spines being 

 proportionally longer ; and in ha\ing a stippled collar on its lorica surface, which 

 macracantha lacks. It is (according to Ehr.) considerably smaller. 



Length (of lorica), ^i^ inch. Habitat. Near Berlin. 



Salpina bicaeinata, Ehrenherg (42), (PL XXXIII. fig. 30). 



SP. CH. Lorica smooth, four processes in front, three small ones behind, alvine 

 pair the smaller. 



Very like mucronata, only all the spines are shorter ; and the gaps between the 

 pectoral and alvine are different. The gap between the pectoral pair is nearly straight 

 with a slight central incision, while the corresponding gap in mucronata is very deep. 



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



Salpina poltodonta, Schmarda (135), (PI. XXXIII. fig. 28). 



SP. CH. Body sub-triquetrous ; pectoral spines two-pointed; the middle hind 

 spine blunter than the alvine. Two rows o/ teeth in each uncus. 



This Salpina has a lorica differing from that of brevispina only in the pectoral 

 spines. As will be seen from the figure, each pectoral projection is double-cornered, 

 unlike any other Salpina. Schmarda credits the animal with two rows of teeth in each 

 uncus ; I think that this must be an error. 



Length. About ^^g inch. Habitat. St. Jago, Chih. 



