Coss—Vematodes, mostly Australian and Fijian. 301 
wide as the head, and the three bulbs at its base form a triple knot three times as 
wide as the shaft. Anteriorly the cesophagus is one-fourth as wide as the neck ; 
somewhat behind the middle of the neck it expands to form a muscular prolate bulb 
one-half as wide as the neck. Thence it passes through the oblique nerve-ring 
situated just behind the bulb, and from being there one-fifth as wide as the neck it 
becomes rather suddenly one-half as wide as the neck, and joins the intestine in a 
rather indefinite manner at 16°/,, as stated in the formula. The ventral excretory 
pore is situated at a distance behind the median bulb equal to thrice the length of that 
organ. The intestine is composed of cells containing coarse granules. The distance 
between the wings of the cuticle equals one-third the width of the body. The tail is 
conoid to near the terminus, where it diminishes suddenly to a blunt point. I saw 
only immature females, and cannot give details concerning the sexual organs. The 
above formula is the average of four specimens. Male unknown. 
Ffab.—Observed in numbers in brown rotten cavities three-fourths of an inch 
deep in the root-stock of banana plants, and also occasionally among the outer 
sheaths of the plants as well as in the adjacent soil, Fiji, 1891. 
4. T. similis, n.sp. Nearly all the information I have with 
regard to this species is set forth in the sketches on Pl. xim 

Ffab.—F¥ ound about diseased banana plants, Fiji, July, 1891. 
5. T. multicinctus, n.sp. $-ss7-a3-s3 mm. Cuticula traversed by numerous 
plain transverse strieze, which are displayed in the outer as well as the inner layers ; 
neck conoid; head somewhat rounded and presenting six transparent lips; spear well 
developed, stout, and with three prominent bulbs, in action guided by well-developed 
chitinous processes behind the lips ; anterior part of the cesophagus a chitinous tube ; 
median sucking-bulb considerably behind the middle of the cesophagus, ellipsoidal and 
presenting a well developed internal valve; nerve-ring oblique, close behind the 
median bulb ; posterior part of the cesophagus at first tubular, but finally expanding 
into a swelling nearly half as wide as the base of the neck ; intestine granular, two- 
thirds as wide as the body ; tail convex-conoid, blunt ; nature of the female sexual 
organs unknown. ss-g7-53-7-3 2mm. Spicula two, equal, elongate, tapering, acute, 
arcuate, proximal ends not cephalated, one and one-half times as long as the anal 
body-diameter ; tail completely enveloped in the striated bursa which springs froin 
opposite the proximal ends of the spicula and reaches its greatest development 
opposite the anus ; accessory pieces half as long as the spicula and placed parallel to 
them. The worm is well figured on Pl. xin. 
fTab.—Found about the roots of banana plants, Fiji, July, 1891. 
