DESCRIPTIONS OF NEW SPECIES. 



137 



vessels and viscera, but found no parent form. The embryos 

 measured about -^" by -5-^077". Its tail was unlike that of F. s. h. 

 being truncated and slightly bulbous like the point of a " Bougie 

 Olivaire." I observed that there seemed to be a sort of articulation 

 (and something of the same sort I have seen in F. s. h.), about yoVo" 

 from the tip of the tail, for when in motion this part was often bent 

 at an angle and not in harmony with the sweep of the rest of the 

 body. The integumental character of the lash was very evident, and 

 double outline could be recognised in the body. Often the bag or 

 lash could be seen most distinctly long distances from the tail. 

 There was no trace of vessel in the body, which appeared to be quite 

 homogeneous even under a high power. 



" I trust these notes, along with the specimens and paper I hope to 

 send you, may be of some interest, and I would again request you 

 to make what use of them you see fit. 



" Apologising for the trouble I give you, and again thanking you, 

 " Believe me, 



" Yours faithfully, 



" Patrick Manson." 



DESCRIPTION OF PLATES VIII, IX. 



1. — Outline representation of large Haematozoa fa, b) and three blood 



corpuscles (cj of Corvus torquatus. X 350 diameters. 

 2. — Outline of an ovum of Filaria Bancrofti found in the inguinal 



lymphatics. X 350 diam. 

 3. — Seven illustrations (a — g) showing the mode of formation of the 



sheath of the smaller haematozoa infesting Corvus torquatus, 



X 350 diam. 

 4. — Mature examples of the male (a) and fhj female Filaria corvi 



torquati (Mans, and Cobb.) Natural size. 

 5. — Mature examples of the male fa) and fbj female Filaria piece medice 



(Mans, and Cobb.) Natural size. 

 6. — Head 00 > tail ChJ, and section of the body fc) of a male Filaria 



corvi torquati (Mans, and Cobb.) X 350 diam. 

 7. — Head (aj, tail (bj, and section of the body fcj of the male Filaria 



piece medioB (Mans, and Cobb.) ; the head of the female worm C^J 



being also represented to show the narrow oesophagus and also the 



outlet of the vagina immediately below the mouth. X 350 diam. 

 8.— Outline representations of nematoid haematozoa from Pica media (a), 



from Gracuipica nigricollis (J), from Corvus torquatus (c), from 



Gotira coronata (d) and from the dog (e), showing their relative sizes 



and forms. X 350 diam. 



