242 PARASITES OF MAN 



the ' Dublin Med. Press/ Feb., 1863. Idem, ' Entozoa/ chap, 

 xi, p. 316, 1864. Idem, ' Worms/ pp. 72 and 112, 1872. Idem, 

 in " Obituary Notice of Dr Henry Nelson," e Med. Times and 

 Gaz./ 1865 (?). Davaine, ' Traite/ 1. c., 1877. Dieting, C. M. t 

 ' Syst. Helm./ vol. ii, p. 180, 1850. Dujardin (1. c., Bibl. 

 No. 2), p. l62.Frcelich, in ' Naturf ./ xxiv, s. 141 (Asc. fells). 

 Funke, 0., ' Lehrbuch (u. s. w.)/ 1857, s. 1299. Gmelin, 

 'Syst. Nat./ p. 3031. Golze, 'Naturg./ 1. c., s. W.Gurlt, 

 'Path. Anat./ s. 366. #eZ/er, A, " Darmschmarotzer," in 

 'Von Ziemssen's Handbuch/ Bd. vii, s. 361. Idem, ' Sitzungsb. 

 d. Erlanger phys.-med. Soc./ 1872, s. 73. Hering, " Ueber das 

 Vorkommen und die Entwicklung der Ascaris mystax bei jungen 

 Hunden," quoted by Leuckart from 'Wiirtemb. Naturw. 

 Jahreshefte/ 1873, s. 305-337. KolWcer, in < Mullens Archiv/ 

 1843, s. 68 et seq.Leidy, ' Proc. Acad. Phil./ viii, p. 50. 

 Leuckart, 1. c., Bd. ii, s. 258. Meissner, G., " Beobachtungen 

 iiber das Eindringen der Samenelemente in den Dotter," S. 

 and K. ' Zeitsch./ 1854, s. 208. Morton, T., " Another Example 

 of the Occurrence of A. mystax, from a Child of fourteen 

 months old/' in a letter to the 'Lancet/ March llth, 1865, 

 p. 278. Nelson, H., "On the Reproduction of Ascaris mystax," 

 ' Proc. of the Koyal Soc./ in ' Philosoph. Trans.,' and in ' Med.- 

 Chir. Rev./ 1051-52; also in 'Froriep's Tagsbericht./ 1852, 

 s. 205-207. Rudolphi, ' Synops./ p. 42, 1819. Schneider, 

 "Ueber Bewegung an dem Samenkorperchen der Nematoden," 

 in 'Monatsb. d. Berliner Akad./ 1856, s. 192. Idem, ' Mono- 

 graphie der Nematoden/ Erste Abth., s. 38, und Dritte Abth., 

 s. 263 (" Entwicklungsgeschichte"), 1866. Siebold, 'Ver- 

 gleichende Anatomie/ 1848, s. 153, and in Burnett's edit., 

 p. 125 et seq., 1854.. Thomson, A. t art. " Ovum/' in ' Todd's 

 Cyclop, of Anat. and Phys./ supp., 1859. Idem, <c Ueber die 

 Samenkorperchen, die Eier und die Befruchtung der Awm-i* 

 mystax," S. and K. 'Zeitsch./ 1856, s. 425. Idem, "Report 

 of Glasgow Meeting" ('Brit. Assoc. Rep.'), 1855, p. 158. 



Ascaris maritima, Leuckart. This is a well-marked species. 

 Judging from the characters presented by the solitary, sexually- 

 immature female which supplied Leuckart with his only means 

 of diagnosis, this worm may be briefly described as a filariform 

 nematode about f" in length and about ^" in breadth. Although 

 there are no cephalic aliform membranes, the cuticle imme- 

 diately below the lips forms small and distinct projections, 



