DIAGNOSES 397 



The male. The relatively large gubernaculum, gub, is single, rather shallow, 

 nearly straight, and extends inward nearly at right angles to the ventral sur- 

 face, so that its proximal end is considerably dorsad of the body axis. It 

 appears quite as massive as the two equal spicula, and has the form of a rela- 

 tively very broad, shallow, somewhat boat-like trough, deepest amidships, 

 its depth being about one-third 'its length. The long 

 narrow bursa, brs, presents seven whiplash-like ribs (1-7, 

 Fig. 2) extending into each of the colorless, thin, glassy- 

 looking, ventrally submedian, bursal expansions of the 

 cuticle. 



Since the suckers are common to both sexes, they can 

 hardly be considered secondary sexual organs. Figure 4, 

 X 800 1 -:"'' derived from one of the few immature specimens thus far 

 Fig. 4. Ventral seen, seems to indicate that these interesting organs come 

 view of the suckers into existence at the last moult, for, just previous to the last 



ust beTre^theTast m Ult> they ^^ immature or "embryonic." It seems 

 moult 6 hardly possible that these organs can be homologous with 



the phasmids; nor does it seem possible to link them with 

 such ventral suckers as occur for instance on male Heterachids. In short, 

 further observation is needed fully to determine their function. 



Habitat: Body cavity and muscles of the earthworm, Eutyphoeus rarus; 

 fide Mr. G. E. Gates, to whom the discovery of the nema is due. Locality, 

 Prome, Burma, India. 



Ungella, n. gen. 



Genus Diagnosis: Amphigonic onchia hooked protrusile, dorsally arcuate; 

 and special cervical gland; oesophagus degenerate-diplogastroid; adults 

 with posterior lateral pockets or "suckers;" 'm and 'f ; males with two equal 

 spicula and a gubernaculum, and an elongate pre- and post-anally ribbed 

 bursa. Parasitic in earthworms. Proposed as type species is: 



Species Diagnosis: Flexible-tailed ungellas, dimensioned as in the formulae 

 and illustrations, with two practically submedian, amalgamated onchia 

 (ungellae), having the form of the final joint of a beetle's tarsus; cervical 

 gland just behind the cardia, its outlet dorsad on the lip region; pockets or 

 suckers not far in front of the middle of the tail; external amphids more or less 

 circular and opposite the base of the pharynx; oviparous; males with three 

 pre- and four post-anal slender ribs to the bursa, as shown in Figure 2 ; pos- 

 terior part of the tail cylindroid, fine yet blunt, in the male distinctly set 

 off. 



Only a more careful study of the nemas thus far described as para- 

 sitic in earthworms can determine the nature and limits of most of the 

 genera and species that have been proposed for their reception. 



For literature consulted see the list of Pierantoni (Boll. Soc. Nat. 

 Napoli, 1915, p. 150-3) and Baylis & Daubney (Synopsis, 1926). 



