514 Georgina Siueet : 



Host. — Horse: stomach (and intestines (1) ). 



Locality. -"Horsham, Victoria ; June, 1903. 



No previous record for Australia. 



It is worthy of note that all the Nematode species recorded 

 here, up to this point, were obtained together from the one 

 horse, and of course may have been accompanied by others — 

 certainly a most varied fauna in comparison with its small 

 total number — viz., 3 genera, 5 definite species and tAvo others 

 indefinite, in a total of 29 individuals. It will be noticed that 

 the habitat given for all these preceding forms differs from that 

 given by Looss — thus all the species of Sclerostovmm and 

 Cylichnostomum, and Triodontophoriis serrnttis are found 

 normally in the caecum, and the 1st third of the large loop of 

 the colon, Tr. min.or, living in the last part of the colon. Here, 

 however, the information accompanying the material is 

 "stomach (and intestines (?)) of horse." Also as regards 

 TriodoiitoiJliorus, Looss remarks that the individuals are " very 

 constantly found firmly fixed to the mucous membrane of the 

 host's intestine." Whether any of my sjtecimens were so 

 attached when found, I am unable to say, all the specimens on 

 which these records (Nematodes Nos. 1-7) being preserved free 

 in a glass tube, and unaccompanied by an}' information on this 

 point. 



No. 8. — Ascanis megalocephala, Clou ; 

 = Ascaris^ equorwn, (iloeze. 



Fifty-one specimens of this common species of other countries 

 were brought to me from the intestines of a horse. Their 

 length varied from 17-23 cm., their diameter from 4-7 mm. 

 The males and females were in nearly equal numbers. Owing 

 to their having been kept for some time befoi'e reaching me, 

 they showed a tendency to contract greatly on being \nn into 

 formnlin and spirit, the body walls shrinking :i\vay in many 

 cases from the cuticle. The head end, unlike the tail, did not 

 leave the cuticle, but l)ecame sharply bent veni rally, so that 

 often the mouth was directed posteriorly instead of anteriorly. 

 The general characteristics of these specimens aie normal. A 

 number of individuals have been })ic]\ed up in various ]iarts. 



