THE ROTIFERA OF THE SCOTTISH LOCHS. 
Ig)ik 
Prate IV. 
14. Adineta tuberculosa, Janson. 
15. Rotifer socialis (Kellicott). 
a, animal with foot partially retracted. 
b, small-scale drawing, to show proportions. 
c, jaw. 
d, antenna. 
e, foot, last three segments, and toes. 
18. Pseudoecistes rotifer, Stenroos. 
a, the animal swimming. 
6, teeth of one jaw. 
19. Stephanops tenellus, Bryce. 
a, dorsal view. 
b, lateral view. 
16. Callidina aspera, Bryce. 
a, dorsal view, feeding. 
6, jaw. 
17. Microdina paradoxa, Murray, with jaws pro- 
| c, portion of trunk, showing tubercles. 
| 
| truded, biting a filament of Alga. 
21. Philodina macrostyla, Ehr.  Rostral tip, to 
show pairs of tactile sete. 
22. Rotifer tardus, Eby. 
sete. 
23. Rotifer vulgaris, Schrank. 
central sete. 
Head, showing central 
Head, showing 
20. Rotifer trisecatus, Weber. | 24, Albertia intrusor, Gosse. 
a, jaw. a, dorsal view. 
b, foot, from ventral side. | b, lateral view. 
c, foot, lateral view of penultimate segment | c, lateral view of young. 
and spurs, d, dorsal view of young. 
Puate VI. 
25. Notommata pumila, n. sp., Rousselet. 
a, lateral view, drawn by F. R. Dixon- 
Nuttall. 
b, jaws, after drawing by Mr Rousselet. 
ec, toes, dorsal view. 
26. Proales daphnicola, Thompson. 
a, lateral view, head applied to skin of worm. 
b, five examples adhering to one worm. 
C, jaws. 
27. Colurus tesselatus, Glascott. 
a, dorsal view. 
6, lateral view. 
28. Plesoma, sp. ? 
a, probably P. triacanthum (Bergendal). 
three dorsal 
additional lateral 
b, larger species, also with 
spines, and two 
spines. 
TRANS. ROY. SOC. EDIN., VOL. XLV. PART I. (NO. 7). 26 
