236 PARASITES OF MAN 



the stomach downwards, being also found in the pancreatic and 

 biliary ducts, and likewise within the gall-bladder. According 

 to Bavay, five days suffice under favorable circumstances for the 

 complete maturation of the worm. This readily accounts for 

 their occasional extreme abundance. 



I am indebted to the courtesy of Dr le Roy de Mericourt for 

 the original memoirs from which these brief abstracts are taken. 



Leptodera intestinalis, Bavay. This is a larger species, now 

 and then found associated with the above, and, according to 

 Bavay, " in infinitely less abundance/' This species was also 

 discovered by Dr Normand, and has been carefully described 

 by Bavay. Possibly the worm may afford us another curious 

 instance of dimorphism. Be that as it may, it must be pro- 

 visionally regarded as a distinct form. As its occurrence is by 

 no means invariable, its r61e in relation to the Cochin-China 

 diarrhoea must, as Davaine has likewise remarked, be regarded 

 as of secondary importance. It is readily distinguished from 

 A. stcrcoralis both in the adult and larval conditions. The full 

 grown worm, although comparatively narrow, is more than 

 twice as long as its congener ; moreover, the larvae, in place of 

 possessing finely-pointed tails, have blunt or truncated caudal 

 extremities. Converting M. Bavay's millimetric measurements 

 into fractions of the English inch, the average length of the 

 mature worms will be about ^i" , whilst their breadth does not 

 exceed 7 ^" in diameter. 



BIBLIOGRAPHY (No. 32). Bavay, " Sur I'Anguillule ster- 

 corale," ' Comptes Rendus/ Oct., 1876, p. 694, also in ' Ann. 

 Nat. Hist./ vol. xviii, 4th series, p. 507, 1876, also noticed in 

 the ' Veterinarian/ Jan., 1877, p. 19. Idem, " Note sur 

 VAnguille intestinale," ' Archiv. de Med. Nav./ July, 1877, p. 

 64, and in ' Ann. Nat. Hist./ 1877, vol. xix, 4th series, p. 350. 

 Colloid, T. S., " Parasites of Man," in the ' Midland Natu- 

 ralist ' for January 1st, 1879. Davaine, ' Traite/ 1. c., 2nd 

 edit., Supp., pp. 966-976, 1877. Laveran, in ' Gaz. Hebd. de 

 Med./ Jan., 1877, p. 42. Layet and Le Roy de Mericourt, in 

 ' Diet. Encycl. des Sci. Med.,' 1875. Libermann, in ' Gaz. des 

 Hop./ March, 1877, p. 237, and in ' La France Med,/ 1877, p. 

 165 (quoted by Davaine). Mericourt (see Layet). Normand, 

 A., in ( Comptes Rendus' for July, 1876, p. 316, and Aug., 

 1876, p. 386. Idem, in < Arch, de Med. Navale/ 1877, p. 35, 

 and separately as ' Mernoire sur la diarrhee dite de Cochin- 

 chine/ Paris, 1877. Idem, " Du role etiologique de FAnguil- 



