236 ORDER LITINIA 



10. Nemella ocellata n. sp. .* L M i- 2 ~vi-* Except for the ceph- 

 alic setae, the thin cuticle is naked. At a distance from the anterior extremity 

 about equal to the width of the head, the striation of the cuticle ceases, so that 

 the head is set off by an absence of striations, as well as by a slight thickening 

 of the cuticle. The neck is cylindroid. From the faint amphids, an inner 

 element can be traced backward to near the base of the head. The two eye- 

 spots are brownish in color, and each has a colorless lens. The oesophagus, which 

 has an indistinct lining, is at first one-half, near the nerve-ring also one-half, 

 and finally three-fifths, as wide as the corresponding portion of the neck. There 

 is no cardia. The intestine, which is set off from the oesophagus by a collum 

 one-half as wide as the neck, becomes at once three-fourths as wide as the body. 

 Its wall is thick, its lumen faint, and it is made up of cells of such a size that prob- 

 ably only two are required to complete a circumference. These cells are packed 

 with colorless granules of variable size, the largest of which are about one- 

 twentieth as wide as the body. The tail is conoid to the convex-conoid spin- 



i . .sn*0r nere t, which at its base is one-third as wide as the base of the 

 - tail, and has somewhat the profile of a swan's head. No setae 

 were seen on the tail. At their widest part the simple, frail, taper- 

 ing, subacute spicula are about one-fifth as wide as the corre- 

 sponding part of the body. Their proximal ends, which are mi- 

 nutely cephalated by contraction and constriction, appear to lie a 

 little ventrad from the body axis. They are supported by a simple, 

 frail, slender, faintly S-shaped accessory, with a tapering apophy- 

 sis (?) extending backward from the spicula at an angle of about ninety degrees, 

 and about one-third as long as the anal body-diameter, its proximal end lying 

 opposite the caudal axis. Whether there is one testis or two remains to be 

 determined. 



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

 glycerine jelly. Fig. 10. 



11. Porocoma striata n. sp. -V ' J -5 i-J> i-? 1- - The rather thin cuti- 

 cle appears to be destitute of setae except at the extremities. The body is tra- 

 versed nearly from end to end by about ten to twelve wings. Between the 

 wings the transverse striae seem to be resolvable into excessively minute ele- 

 ments. In addition to the cephalic setae, there is a ventral seta-like organ, oppo- 

 site the sub-cephalic setae and just behind the excretory pore. This is a little 

 stouter, longer, and more blunt than the cephalic setae, and seems to have a 

 special relation to the excretory pore. The mouth is surrounded by relatively 

 thick, minute lips. It is possible that a more or less vestigial pharynx extends 

 back to near the cephalic setae, its presence being indicated by a slight difference 

 in the lining of the canal, and by a break in the musculature. Posteriorly the 

 neck is cylindroid, anteriorly convex-conoid. No distinct traces of amphids 

 have been seen, but possibly obscure ones exist opposite the bases of the lateral 

 setae. The oesophagus is cylindroid, then conoid in its posterior eighth. Near 

 the head it is one-half, near the nerve-ring two-sevenths, and finally three- 

 fourths, as wide as the corresponding portion of the neck. Its lining is indis- 

 tinct. There is a flattish cardia, one-half as wide as the base of the neck. The 

 thick-walled intestine is separated from the oesophagus by a collum one-half as 

 wide as the base of the neck and becomes at once two-thirds as wide as the body, 

 and would present two to three cells in cross-section. Its cells contain scattered 

 granules of variable size, the largest of which have a diameter about equal 



