PSEUDOLELLA 



269 



the middle of the pharynx. At its widest, i.e., toward the front, the amphid is 

 a little narrower than the pharynx. Lips relatively thick, closing to form an 

 exceedingly narrow, cutinized vestibule. Pharynx and all parts of the alimentary 

 canal like those of P. cephalata. Pharynx sub-uniform, about one-sixth as wide 

 as the base of the head. A little behind the lips the lining of the pharynx is 

 discontinuous and the cavity bends slightly toward the ventral side, and there 

 appears to be a pair of very small, ventrally submedian onchia of equilateral 

 profile. It is difficult to make out the details sufficiently well to state positively 

 that these refractive, cutinous elements are homologous with ordinary onchia. 

 Opposite the onchia on the dorsal side the cutinized, pharyngeal elements are 

 discontinuous, two or three in number, but not very variable in character. The 

 onchia and the elements opposite them and in front 'of them are fully as robust 

 as the walls of the pharynx, of which the ventral side supporting the "onchia" 

 is considerably thicker than the dorsal. The cross-section of the intestine 

 appears to be made up of few cells, perhaps only two or three. The granules in 

 the intestinal cells, the largest of which are half as wide as the nucleus of the 

 renette cell, are a very conspicuous feature and give rise to a very indistinct 

 tessellated effect. In its anterior half the tail is conoid from the anus, and at the 

 middle is one-fifth as wide as at the base. Thence onward, it tapers but little 

 and ends in a somewhat rounded, unarmed spinneret. There are no caudal setae. 

 Caudal glands occur in the anterior part of the tail. Lateral fields indistinct, 

 apparently one-third as wide" as the body. Both before and behind the renette 

 cell there are bodies of unknown significance that stain with carmine. Nucleus 

 of the renette cell distinct, slung in a conspicuous protoplasmic network. Behind 

 the renette cell is a spindle-shaped, distinctly nucleated cell fully one-third as 

 wide as the body and about twice as long as wide. Still further back, after a 



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2y?' "% * *ij" " " 3.8 '^N- 2.9 



considerable interval, there is 

 another similar cell of larger 

 size; these two latter cells seem 

 connected by a narrow process, 

 and the anterior smaller cell 

 presents a narrow process 

 extending forward. Spicula uni- 

 form, arcuate, one and one-half 



s~--- ' 



times as long as the anal body 

 diameter; their proximal ends rather prominently and obliquely cephalated by 

 expansion. Proximal ends a little dorsad from the body-axis. The spicula 

 taper to a fairly acute point in the distal fourths and their cutinized framework 

 is duplex; at their widest part, the middle part, the spicula are about one-sixth 

 as wide as the corresponding portion of the body. Two accessory pieces adjoin- 

 ing the distal fourths of the spicula; extending backward at right angles to the 

 spicula are the blunt apophyses three-fifths as long as the anal body diameter. 

 The number and the structure of the testes is uncertain, but apparently there 

 are two, of which the anterior is reflexed and the posterior outstretched. The 

 sexual cells are of unusually large size and their walls appear to divide up the 

 testes in an irregular geometric fashion. 

 Habitat: Marine mud and sand, Noumea, New Caledonia. Fig 536. 



