296 Macteay MemoriaAt VoLuME. 
rectum nearly twice as long as the anal body-diameter; tail conical and hair-fine at 
its terminus, without glands; anus and vulva not conspicuous. Male unknown. 
Figured on Pl. xxxvu. 
H{ab.—Soil about banana plants, Fiji, July, 1891, common. 
Genus TY LENCHOLAIMUS, de Man. 
T. ensiculiferus, n.sp. A ees 17mm. The thick transparent and naked 
cuticle seems not to be annulated. The neck is cylindroid in the posterior half and 
convex-conoid in the anterior half. The diameter of the head in the lip-region is 
equal to ‘8 per cent. of the body-length, z.e., is one-third as wide as the base of the 
spear. The head, somewhat rounded in front, bears no sete and none but very 
inconspicuous lips, of which the number is probably three. There are no eyes. No 
lateral organs were seen. The pharynx, which is half as long and nearly one-third 
as wide as the neck, contains a spear whose three-bulbed base is one-fourth as wide as 
the middle of the neck and whose posterior third is three times thicker than the 
slender anterior two-thirds. From the base of the spear a narrow and, when the 
spear is not exserted, tortuous canal leads to the muscular much elongated cardiac 
bulb, which is twice as long as the neck is wide and fully four times as long as wide. 
The thick-walled granular intestine is one-half as wide as the body and is separated 
from the cardiac bulb by a deep and distinct constriction; the rectum is one-half as 
long as the anal body-diameter. The nature of the ventral gland, longitudinal fields, 
and nerve-ring remain unknown. The posterior end is rounded and thick-skinned, 
but its internal muscular matter ends in a blunt point. The male was not seen. 
Drawings of this interesting worm will be found on PI. xin. 
Hab.—F ound in soil about the roots of banana plants, Fiji, 1891. Not common. 
Gexus TYLENCHUS, Bastian. 
Transparent striated round worms, in most cases devoid of bristles or sete, 
varying in length from one-third of a millimetre to three and a-half millimetres, 
attacking the tissues of plants, or more rarely animals, by means of a pharyngeal 
spear and sucking apparatus of the following construction: a three-bulbed spear, 
capable of being thrust forth and withdrawn by appropriate muscles, is connected 
with a powerful median cesophageal sucking-bulb by means of a tube whose lining is 
more chitinous than is usual in other Nematode genera; the median bulb is connected 
with a smaller posterior bulb of much weaker construction by means of a shorter and 
