246 ORDER CYTOLAIMIA 



by a collum one-fifth as wide as the base of the neck, and becomes more or less 

 gradually three-fourths to five-sixths as wide as the body. Its cross-section is 

 composed of twenty to fifty cells. These cells contain numerous granules of 

 variable size. The tail tapers from in front of the anus; it is first conoid, then 

 cylindroid in the posterior fourth, where it becomes one-fifth as wide as at the 

 anus. There are no caudal glands. Fifteen to twenty almost invisible setae, 

 as long as the cuticle is thick, occur on each ventrally submedian line on the tail. 

 The longitudinal fields are one-third as wide as the body. Near the excretory 

 pore is an ampulla one-sixth as wide as the corresponding portion of the neck. 

 The nerve-ring is accompanied by obscure nerve-cells. Vulva medium-sized, 

 more or less elevated; vagina non-cutinized. Near the proximal end, each ovary 

 presents a double flexure, occupying a distance about equal to one body-width; 

 thence onward the ovaries are outstretched in opposite directions, at last not 

 over one-tenth as wide as the body. The eggs occur in the uteri about nine at a 

 time. They are about one-half to two-thirds as long as the body is wide, though 

 they are often so crowded together in the uterus that they appear wider than 

 long. The narrow tapering ovaries contain seventy to eighty ova, arranged 

 single file. The strong, rather simple, stoutish, tapering, rather blunt spicula 

 are as long as the anal body-diameter, and are so placed that their proximal ends, 

 which are cephalated by expansion, appear to lie somewhat dorsad from the body- 

 axis. At their widest part the spicula are about one-eighth as wide as the corre- 

 sponding portion of the body; the apophysis is more or less uniform, and one- 

 fourth as long as the anal body-diameter, so that its proximal extremity appears 

 to lie opposite to or dorsad from the axis of the tail. The 25 supplementary 

 organs, hardly more than innervations, are papilloid and of slight elevation, 

 rather farther apart anteriorly, and occupy a distance five to six times as great as 

 the corresponding body-diameter. There is a single papilla-like ventral seta 

 close to the anus. 



Habitat: Sand, Coco-plum Beach, Miami, Fla., U. S. A. Flemming to glycer- 

 ine jelly. Fig. 24, p. 245. 



25. Neurella simplex n. sp. Striae resolvable with great difficulty into second- 

 ary elements. The narrow, sharply-defined wings begin near the head and end 

 on the tail. The cuticle appears to be naked, except that at the base of the 

 amphids there are elements of problematical significance and number. The neck 

 .2 8.7^ ij. ?57.' M. is cylindroid posteri- 



.3 1.2 v 1.2 1.7 1.2 1- "" orly, conoid anteriorly, 

 2 s 3 13. "=n 92. convex-conoid toward 



' '.^""i-V^'iz i.i'^i.z 1 ' the head. There seem 

 to be three lips surrounding the somewhat irregular but 

 more or less distinct, relatively small pharynx. Oesoph- 



U)/ *W,/ agus cylindroid; at first one-half, near the nerve-ring 

 i@k$jjll one-third, as wide as the corresponding portion of the 

 V* 1 m neck; its lining is indistinct. The separation between 



the oesophagus and the intestine was not very clear-cut. The thick-walled 

 intestine gradually becomes one-half as wide as the body; its section is made up 

 of two cells containing scattered granules of variable size, the largest about 

 one-eighth as wide as the body. Not until near the middle of the body does the 

 intestine acquire very definite characteristics. Anus more or less elevated. 

 Tail of the male, as far as seen, conoid; apparently only its tip was missing. 

 Located well toward the middle of the body there is a long, granular cell empty- 



