306 ORDER AXONCHIA 



posterior half, and in this part, about one-third as wide as at the anus, the ter- 

 minus being rounded. The coarsely granular lateral fields are one-fourth to 

 one-sixth as wide as the body. Renette problematical. From the small, incon- 

 spicuous, faintly elevated vulva, the rather weak, non-cutinized vagina leads 

 inward two-fifths the distance across the body. The elongated eggs are three 

 times as long as wide and twice as long as the body is wide. The tapering ovary 

 reaches about half way back to the vulva, and contains about twenty ova. the 

 largest of which are arranged single file, while the others are arranged irregularly. 

 Habitat: Soil about the roots of Luca da Persia, Brazil. The part of Brazil 

 from which the plants came is unknown. The soil examined was removed from 

 the roots after they were imported into the United States. It is probable that 

 the species is syngonic. Another tropical species, originally described by the 

 writer under the name of Dorylaimus longicollis, from about banana roots, Fiji, 

 possibly also belongs to this genus. Fig. 86. p. 305. 



87. Onchulella ocellata n. sp. 1.2 i.* 1.6 1.7 1.3 " Cuticle naked. 

 Striae almost impossible of resolution. Spear solid, refractive and apparently 

 "structureless" throughout. The two yellowish ocelli are wide apart, their 

 lenses colorless. The oesophagus is at first about one-half, near the nerve ring 

 two-fifths, and finally five-sixths, as wide as the corresponding portion of the 

 neck; the anterior part is cylindroid, the posterior part more or less obscure. 

 The oesophageal region seems to be largely filled with a series of elongated, 

 clavate glands, some granular and some not, and hence of two kinds. The hind- 

 ermost of these is the largest, and with reference to the oesophagus lies in much 

 the same way as the larger salivary gland of Tylenchus. There 

 is also a large spherical nucleus in this gland, as in Tylenchus. 

 This is the only one of the granular cells having a large conspicu- 

 ous nucleus. The non-granular cells are smaller; two or three 

 of them present nuclei. The measurements given in the formula 

 for the base of the oesophagus really refer to the posterior limits 

 of these glands. Just in front of the ocelli there are two lateral, 

 external, elliptical, cuticular elements, two-thirds as long as 

 the corresponding diameter of the neck, and one-third as wide 

 as long. These connect backward by means of ducts, and it 

 seems probable that they are connected with one of the two kinds of glandular 

 cells contained in the neck. The lining of the oesophagus is indistinct, its mus- 

 culature fine and colorless. No cardia has been seen. The thick-walled intes- 

 tine, which has a distinct, refractive, ziz-zag lining, becomes at once five-sixths 

 as wide as the body. The anterior lip of the anus is more or less elevated. The 

 inconspicuous rectum is about three-fourths as long as the anal body-diameter; 

 anal muscles are dimly to be seen. The cells of the intestine, of which only two 

 to three would be presented in cross-section, are packed with colorless granules 

 of variable size, the largest of which are one-fifteenth as wide as the body. The 

 arcuate tail tapers from the anus to the terminus, and presents a spinneret 

 about one-sixth as wide as its base. Caudal glands tandem in front half of tail. 

 No caudal setae. Renette unknown. From the somewhat depressed vulva, the 

 more or less cutinized vagina extends inward three-fifths the distance across the 

 body. An ovum, apparently full-grown and about to enter the uterus, is twice 

 as long as the body is wide, and one-third as wide as long. 



Habitat: Eel-grass, Biscayne Bay, Miami, Florida, U. S. A. Flemming to 

 glycerine jelly. Only one specimen that, a shrunken one seen. Fig. 87. 



