330 ANALYTICAL INDEX. 



CHAPTER I. continued. 



Faculties very obtuse, .... PAGE 10 



Charaisso and Eysenhardt, . . ib. 



Plate I. explained, . . ib. 



3. HIRUDO ANCEPS, . . . . . . 11 



Its place in the Systema Natures doubtful, . . ib. 



Excluded from the genus Hirudo grossa by Tandon, ib. 



Muller's account, . . ib. 



Length, organs, &c., ... ib. 

 Spawn, ...... 



Plate I. described, .... ib. 



4. HIRUDO CAMPANULATA, The Bell Leech, . . . ib. 



Description, ..... ib. 



Specimens perished in a fortnight, . . ib. 



Plate I. explained, ..... ib. 



5. UDONELLA CALIGORUM, . . . . .13 



One-half of the animated world will readily devour the other, ib. 



The present genus fall within the class of destroyers, . . ib. 



A parasite which infests the Caligus, .' . . ib. 



Dr George Johnston, ..... 14 



Animal described, ... ib. 



6. HIRUDO OCTO-OCULATA, SEU VULGARIS, The Eight-eyed Leech, ib. 



Not more than six marine leeches belong to Scotland, . ib. 



Principal distinction in specimens, . 15 



General size, ..... ib. 



M. M. Tandon description of the Hirudo octo-oculata, ib. 



Fierce, active, and voracious, .... ib. 



Food, ....... 16 



This species extensively diffused in Scotland, . . ib. 

 Embryo, ....... ib. 



Maturity of the eight-eyed leech, . . . . 18 



Formation of capsules, . . . . .20 



Variety from a marsh in Abercorn parish, . . . 21 



Specimen fed on white-fish, . . . . .22 



This species found also in Edinburgh, . ib. 

 Plate II. explained, ...... ib. 



HIRUDO SANGUISUGA, The Horse Leech, ... ib. 



This species universally dispersed throughout Europe, . 23 



