RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 24I 



3.5 cm. long by 9 mm. broad, which Dr. Francis observes are very 

 destructive to Cattle and Sheep in some parts of Texas. 



The facts related of the recent occurrence of the large Fluke in 

 the Deer and Ox in different portions of the United States would 

 impress one with the idea that the parasite is common with us, but 

 in view of its conspicuous character and its not having been previ- 

 ously noticed such is probably not the case. May there be any 

 relation between the occurrence of the parasite in this country and 

 the influx of a Chinese population ? The facts seem curiously* coin- 

 cidental with the first discovery of Trichina in man in England and 

 its subsequent discovery in the Hog in this country. The Guinea- 

 worm is believed to have been introduced into tropical America 

 with the Negro from Africa. 



Sclcrostomiim armatum Rudolphi, var. wrt/^prDiesing ; Syst. Helm., 

 II, 304. 



Dr. Edward Landis recently submitted to my examination three 

 worms found coiled in as many thick-walled cysts, in the lung of a 

 horse. These appear to me to be the larger variety of the Sdcros- 

 tomuni aniiatiau, usually found occupying the intestines of the same 

 animal. The specimens, all females, are from 25 to 30 mm. long by 

 1.5 mm. thick at the fore part. The body is robust, cylindrical, 

 more tapering behind, brownish-red, annularly striated ; head dome- 

 like, defined by an annular stria ; mouth large, surrounded by a 

 prominent annular lip marked by eight radii ; tail short, conical, 

 obtu.se. 



Ascaris anoura Dujardin : Hist. Nat. des Helminthes, 1845, 221. 

 Leidy : Proc. A. N. S., 1856, 51. 



Ascaris atteniiata Molin : Faunae Helminth. Venetae, i860, 282. 

 Ascaris rubiciuida^QXrayA^x : Monog. T. Nematodon, 1866, 42. 



From the stomach of a Python, P. moluncs, which recently died 

 in our Zoological Garden, Dr. John L. Hatch obtained a large mass 

 of translucent red and green worms, which were submitted to my 

 examination. These appear to be the Ascaris anoura of Dujardin, 

 subsequently described under other names by Molin and Schnyder. 

 The worms for the most part penetrated the recesses of three larger 

 tumefactions of the mucous membrane of the stomach. The greater 

 number of the worms were immature, translucent, of a blood-red 

 color, with a darker intestine shining through, and ranging from 6 

 to 7 cm. long by about 0.6 mm. thick. The mature females ranged 

 from 10 to 20 cm. long by 1.5 to 2.5 mm. thick. The males ranged 

 from 7 to 16 cm. long by 0.875 to 2 mm. thick. 

 16 



