1S2 Lewis and McConnell — On a New Parasite affecting Man. [August, 



The following are the dimensions taken from a specimen in spirit. 



Total length of animal (an adult female) 



from nose to end of tail, 8"65 in. '219 met. 



Length from nose to anus, 4.55 „ "IIG „ 



Do. oftail, 4-1 „ -105 „ 



Do. of ear, 0-57 „ -014 „ 



Do. of skull, 1-22 „ -0305,, 



Breadth of do., 0-62 „ -015 „ 



A fuller description with figures of the skull, &c., will be given in the 

 Journal of the Society. 



The occurrence of this African form in Sind in quite in accordance 

 with other pecuharities of the fauna. The only other known species of the 

 genus is P. fallax, Peters, from Mozambique. 



4. Amphistoma hominis : n. sp. A Neio Parasite affecting Man. — By 

 T. E. Lewis, M. B., and J. F. P. McConnell, M. B. 



The parasite forming the subject of this paper has not, so far as we 

 have been able to ascertain, been j)reviously described ; nor indeed have 

 any species of the genus to which it belongs been, heretofore, foimd to 

 affect man. 



The anatomical and other details here recorded are based on two dis- 

 tinct series of dissections and observations : the earlier series of observa- 

 tions were conducted in June 1871 in connection with specimens of the 

 entozoon obtained from Dr. Joseph O'Brien of Gowhatty ; and the second 

 series during the present year, on specimens which had remained unde- 

 scribed for several years in the Pathological Museum of the Calcutta Medi- 

 cal College. 



Eegarding the former sj)ecimens Dr. O'Brien in writing to one of the 

 authors of this paper (T. E. Lewis,) says : — " I send to-day — 28th May, 

 1871 — a small bottle containing some curious looking parasites found by 

 Curran [Dr. E. H. Curran, since deceased] and I, in the intestines of an 



Assamese man who died of cholera We found them certainly, by 



hundreds ; they lay chiefly in the vicinity of the Ileo-colic valve, and 

 numbers were turned out of the vermiform appendix. I have sent the 

 vermiform appendix ; in it you will find two or three of the ' beasts' in 

 situ. When the intestine was freshly opened they exactly resembled 

 miniature snails and they appeared to stick on to the mucous membrane 



