14 ANTARCTIC MARINE 



toe, which always remains outside the body. The entire profile contour is 

 like that of a high boot with its leg bent backward. The projecting part is twice 

 as long as the diameter of the tube, and is roughened at the end with ten or 

 twelve exceedingly minute striae or warts. The proximal ends of the organs are 

 rounded and not cephalated. 



Habitat ; remarks. Bay, Cape Royds. About fourteen females and six males, 

 in good condition. The sketch is that of a female. 



SABATIERTA, de Rouville, 1903 



4. Sabatieria antarctica, n. sp. Striae about 800, resolvable with great dif- 

 ficulty into dot-like markings. There are no lips. The tubular pharynx, ex- 

 9.3.17.7 Y as. tending to opposite, the posterior 



2"."5 ' 2.6 zTs 2". 4 ' 9na ' borders of the amphids, as shown 



by a slight accentuation of the 



lining, is surrounded by an almost imperceptible, slightly unsym- 

 metrical pharyngeal bulb three-fourths as wide as the head. At 

 the somewhat oblique nerve-ring the oesophagus has a diameter 

 equal to one-third the width of the corresponding part of the neck, but swells 

 posteriorly to two-thirds the width of the base of the neck. The rather cylin- 

 droid cardia is one-third as wide as the neck, and one and one-half times as long 

 as wide. The thick-walled intestine, separated from the oesophagus by a collum 

 two-thirds as wide as the body-diameter, soon becomes three-fourths as wide as 

 the body and is about two cells in girth. From the elevated posterior lip of the 

 anus the rather prominent rectum extends inward and forward a distance equal 

 to the anal body-diameter. From the anus the tail tapers for three-fourths of 

 its length, then becomes cylindroid to the slightly swollen terminus. The caudal 

 glands are probably small and near the anus. 



Habitat; remarks. Cape Royds. Described from a single young specimen 

 in fair condition. 



TERSCHELLINGIA, de Man, 1888 



5. Terschellingia polaris, n. sp. The cuticle is traversed by about 700 striae, 

 plainly visible near the extremities only. Narrow double wings, having a width 

 about equal to that of two an- 33 



nules of the cuticle, begin near ' : 8 . . . 9 : 9 : 15 : 5 .T 44 :. . . 84 : 9 , 73cra 



the middle of the neck. The _ : - 3.2 3.6 4. 2.5 



central raised body, or "fleck," 

 of the amphid stains about as 

 strongly as the nuclei else- 

 where in the body. Very minute, inconspicuous papillae, probably six in number, 

 occur on the confluent lips. The vestibule is very minutely longitudinally stri- 

 ated. About halfway to the amphids there is a break in the musculature of the 

 oesophagus; the pharynx probably extends to this point. The conoid neck con- 

 tains a cylindroid oesophagus which, near the nerve-ring, is one-third as wide as 

 the neck, but ends in a bulb five-sixths as wide as the base of the neck. The 

 lining of the oesophagus is distinct, its most prominent optical expression being 

 a single refractive line. The cardiac valve causes a slight, simple modification 

 in the lining, one-eighth as wide as the bulb. The more or less thick-walled in- 



