258 Macteay Memoria Vouume. 
1, apart. The intestine is laid close on to the cardia,—thus giving rise to a double 
constriction in the cardiac region,—and is composed of cells of such a size that twelve 
side by side make up its circumference. The concave-conoid rectum equals the anal 
body-diameter in length. What had every appearance of being the excretory pore 
occurred immediately behind the nerve-ring of every one of the numerous specimens 
examined. The lateral fields appear to be one-fifth as wide as the body. The tail is 
conoid to the terminus, which has a diameter one-seventh as great as the anal body- 
diameter. The vulva is not prominent. The uterus is as long as the reflexed part 
of the ovary, which reaches two-fifths the way back to the vulva. The ova are 
arranged single file. This worm is well drawn on PI. xxxv1. 
fTab.—F ound in soil about the roots of banana plants, Fiji. No males were seen. 
* . : 20 a2 98*6 6680: : 
3. M. crassiusculus, Dujardin. =—;~;—y37 *mm. This seems to be a doubtful 
or insufficiently-described species. 
FTab.—F¥ vance. 



< : 2 3° 2? 23° 60+ 89° . . . 
4. M. Tunbridgensis, Bastian. $;-7-¢y 55 32 11™. This species is well charac- 
terised by the head diminishing in size opposite the base of the pharynx. 
Ffab.—Tunbridge, England. 
5. M. tridentatus, de Man. geo nw 32mm As its name indicates, this 
species possesses three teeth ; they are of equal size, their apices being situated some- 
what in front of the middle of the triquetrous pharynx. The cesophagus gradually 
widens posteriorly. The intestine, which is two-thirds as wide as the body, is 
separated from the cesophagus by a transparent cardiac region. The rectum is three- 
fourths as long as the anal body-diameter. The tail is conoid in both sexes. 
bios 1p 27mm, The male has a ventral row of fifteen to seventeen papille in 
front of the anus, and presents also both dorsal and ventral papillee on the tail. Each 
of the two equal slender arcuate spicula has a median stiffening piece of chitin. The 
accessory piece is two-parted, dentate, and encloses the spicula. Oblique copulatory 
muscles appear to be present. 
FTa6.—Moist soil, Holland; not common. 
6. M. brachyurus, Biitschli. }77¢ 327° 15mm. The nearly cylindrical neck of 
this active species is said to terminate in a truncate head bearing a szzgle row of 
rather large papille. The beaker-shaped pharynx is one-third as wide as the head, 
and twice as long as wide. Rasp-like areas on the wall of the pharynx oppose the 
dorsal tooth. The tail is conoid, blunt and arcuate. Two ventral papille are found 
near the vulva, one in front of it and one behind it. The reflexed portions of the 
