TBEMATODA 33 



memoir quoted below), Professor McConnell further observes 

 that the addition of a few more particulars seems necessary for 

 the determination of the identity of the species. He then gives 

 the following characters : 



" Body lanceolate, anterior and posterior extremities pointed, 

 the latter obtusely. Surface covered with minute spines or 

 hairs. Average length I" (three eighths of an inch); average 

 breadth T g". ' Ventral ' sucker slightly smaller than ' oral/ 

 Reproductive papilla or genital orifice placed a little above and 

 to one side of the former. Alimentary canal double and 

 uiibranched. Uterine folds and ovary placed in the median 

 line, and above the male generative organs, the latter consist- 

 ing of two very distinct globular bodies or testes. Ova of the 

 usual type, i. e. oval in outline, having a double contour, and 

 granular contents ; average length *' ; average breadth j~" '. 

 The only point of note is that the average length of these 

 flukes is greater than that of the same species found by the 

 authors above referred to. The D. conjunctum in the American 

 fox, and in the pariah dog, has an average length of J"; only 

 two or three specimens of this size were found in this liver, and 

 these showed evidences of immaturity ; a few were also found 

 4" in length ; but the great majority exactly f ". The ana- 

 tomical characters are otherwise precisely identical." 



Professor McConnell concludes his communication by a remark 

 in reference to the common source of infection shared by 

 mankind and dogs in India. The occurrence, however, of this 

 entozoon in an American red fox points to a very wide geo- 

 graphical distribution of the species. It is hardly likely that 

 the fox, though dying in the London Zoological Society's 

 Menagerie, should have contracted the parasite in England. In 

 the second half of this work I shall reproduce my original drawing 

 (fig. 56) from the ' Linnean Transactions / but I may refer to 

 my Manual (quoted below) for a reproduction of McConnell's 

 figure. In my original specimens the integumentary spines had 

 fallen, probably as a result of post-mortem decomposition. 



BIBLIOGRAPHY (No. 7). Colloid, T. $., " Synopsis of the 

 Distomida3 " (1. c.), 1859; and in "Further Observations on 

 Entozoa, with experiments," 'Linn. Trans.,' vol. xxiii (tab. 

 33, p. 349), I860. Idem, "List of Entozoa, including Pen- 

 tastomes, from animals dying at the Zool. Soc. Menagerie 

 between the years 1857-60," ' Proceed. Zool. Soc./ 1861. Idem, 

 ' Entozoa/ p. 20, pi. ii, 1864; and in "Manual of the Internal 



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