326 THE FKESH-WATER LOCHS OF SCOTLAND 
402. N. caudata, Leidy. 
403. N. collaris, Leidy. 
404. N. cre?iulata, Pen. 
405. N. flabellulum, Leidv. 
406. N. lagemfoi'mis^ Pen. 
407. A^. militarise Pen. 
408. A^. tuhulosa. Pen. 
409. A^. vitrcea. Pen. 
410. Quadrula symmetrica^ Schultze. 
411. Arcella hemispherical Perty. 
412. A. vulgaris, Ehr. 
413. J. discoides, Ehr. 
414. A. artocrea, Leidy. 
Filosa. — 415. Cyphoderia ampulla (Ehr.) 
416. Campascus minutus. Pen. 
417. Assulina seminidum, Leidy. 
418. A. miiior. Pen. 
419. Corythion dubium, Taranek. 
420. Eiiglypha alveolata, Duj. 
421. E. brachiata, Leidy. 
422. E. ciliata (Ehr.). 
423. E. compressa, Carter. 
424. Placocysta spinosa, Carter. 
425. P. lens. Pen. 
426. Paidinella chromatophora, Lauterborn. 
427. Pseudodijffiugia horrida, Pen. 
428. Sphenoderia lenta, Schlumb. 
429. S. dentata. Pen. 
430. Trinema euchelys (Ehr.). 
431. T. linear e. Pen. 
Foraminifera. — 432. Gromia nigricans, Pen. 
Aphrothoraca. — 433. Actinophrys sol, Ehr. 
434. Actinospherium eichhorni (Ehr.). 
Chalarothoraca. — 435. Acanthocystis chastophora, Schrank. 
436. A. myriospina. Pen. 
437. A. turfacea. Pen. 
438. Pomphalyxophrys exigua (Hert. and Less.). 
439. Raphidiophrys pallida, Schultze. 
440. R. conglobata (Greeff). 
Desmothoraca. — 441. ClathruUna elegans, Cienk. 
Suctoria. — On Cyclops viridis, dredged from the bottom of Loch 
Ness, there were often numbers of a tentaculiferous parasite. 
442. Podophrya cyclopum, C. and L. (identified by Mr Scour- 
