ASCARID &. 19 
7, Ascaris stmiLis, Baird. (Tab. I. f. 1.) 
Length of male 2 inches, breadth 1 line. Length of female 14 
inch, breadth ? of a line. Anterior portion much narrower 
than posterior. Head small, mouth with 3 small valves slightly 
projecting beyond the margin. Tail rounded, thick, obtuse. 
Females spirally twisted in many convolutions, of a dark olive 
colour. Male straight to within a short distance of tail, which 
is inflected; of a whitish colour. Skin minutely and finely 
striated across. Wing extending along the whole length and 
becoming thicker and stronger at inferior extremity. Differs 
from preceding species in having the wing stronger and thicker 
at inferior extremity, in having the head and mouth smaller, 
and having the skin finely striated across. 
Hab. Stomach of a Seal from Antarctic regions. 
Collected during the late Antarctic Expedition. Presented by the 
Admiralty. es 
8, ASCARIS TETRAPTERA. 
Ascaris tetraptera, Witzsch, Allg. Encyk. copied by Schmalz, Tab. 
Ana. Entoz. t. 17, f. 10-12; Dujardin, Hist. Nat. Helminth. 
165. 
Hab. Large intestines (cecum) of the Wood Mouse, Mus sylvaticus. 
From the collection of M. Siebold. 
9, ASCARIS SUILLA. 
Ascaris gigas, C. Suum, Goeze, Naturg. 71. 
Ascaris suis, Gmelin, Syst. Nat. n. 24; Schrank, Verzeichn. 6, n. 24. 
Fusaria lumbricoides, c. suum, Zeder, Nachtrag, 25. 
Fusaria lumbricoides, y. suis, Zeder, Vaturg. 102. 
Ascaris lumbricoides (part), Rudolphi, Cloquet, &c. 
Ascaris suilla, Dujardin, Hist. Nat. Helminth. 167. 
Hab. Intestines of the common Sow, Sus scrofa domestica. 
From the collection of M. Siebold. 
10. ASCARIS MEGALOCEPHALA. 
Ascaris. gigas (equorum), Goeze, Vaturg. 63, t. 1, f. 1-3. 
Ascaris equi, Gmelin, Syst. Nat. 3032, n. 23 ; Schrank, Verzeichn. 7, 
n..23; Turton, Brit. Faun. 125, n. 5, 
Ascaris lumbricoides (part), Rudolphi, Hist. Nat. Entoz. ii. pt. 1, 
124; Synopsis, 37, n. 1 ; PEE An. S. Vert. 2nd ed. iii. 654. 
Fusaria lumbricoides, @ equorum, Zeder, Nachtrag, 25; Naturg. 
102. 
