256 Rev. W. Houghton on two Species of Land-Planarie. 
body is extremely mobile, exuding a plentiful and very tena- 
cious mucus; the stripes do not quite meet below, where the 
orange tint is lighter. Body capable of much elongation; the 
black transverse stripes are encircled by a halo of light yellow. 
Length, when extended, 23 inch. No. 2 is merely a sketch 
from memory ; but having since seen another individual of 
the same species, I am able to correct it. The frontlet when 
at rest is semilunar, as in No. 3, and the lateral extensions I 
have given it are exaggerated. "The white stripes should not 
be so regular—white being rather the ground-colour, and 
dark blackish brown banding and marbling it rather irregu- 
larly. Both kinds are of much the same size; and there is 
nothing in their externals to prohibit their being included as 
members of one and the same genus. No. 1 was discovered 
by my brother, Mr. Harold Everett, the other by myself." 
Mr. Everett adds that he has been unable to detect any 
Planarian worms in the fresh waters of the part of Borneo 
where he resides, but that the hot and humid jungle seems to 
be favourable to the existence of terrestrial species. 
I believe that little attention has hitherto been given to the 
study of these Turbellarian worms ; and it is much to be hoped 
that Mr. Everett will extend his observations and give us 
further particulars relating to the species he may meet with in 
Borneo. Years ago Mr. Darwin described several species of 
foreign Land-Planarie in your pages (see Ann. Nat. Hist. 1844, 
vol. xiv. p. 241). Various genera have been found in America, 
Ceylon, | Coe &c. One species of Land-Planaria (P. ter- 
restris) has been observed in this country, first by Mr. Jenyns 
in plantations at Bottisham Hall (see ‘Observations in Nat. 
Hist.’ p. 315)—who, correctly identifying his species with the 
Fasciola terrestris of O. F. Müller (Verm. Terrest. et Fluviat. 
p. 68), called it “the ground-fluke,"— secondly by Sir John Lub- 
bock, Bart., in the plantation of High Elms (Journ. Linn. Soc. 
