244 ORDER BOLBINIA 



glands are probably located in front of the anus. No supplementary organs 

 have been seen. There are no caudal papillae, but both in front of and behind 

 the anus there are a number of ventrally submedian setae; five or six on each 

 side of the anterior half of the tail; while an equal number in front of the anus 

 gradually merge into the scattered setae found all over the body. The proxi- 

 mal ends of the rather stout acute spicula are somewhat diminished and set 

 off by a broad and deep constriction. The framework composing the spicula is 

 relatively massive. The rather straight accessory piece is half as long as the 

 spicula. The ejaculatory duct is about one-fourth as wide as the body. There 

 appears to be a single outstretched testis, though there remains a little doubt 

 on this point. 



Habitat: Shoal in Kingston Harbor, Jamaica, in about one foot of water. Fig. 

 20, p. 243. Sublimate to balsam. 



:'. . 2 -. 8 . .5-? . . -*-'. . 96. 22 



21. Leptonemella cincta n. sp. '- L - "> w |^"XiJ '" The contour is 

 more or less serrate, the annules being retrorse posteriorly and the reverse ante- 

 riorly. In addition to the cephalic setae there are scattered cervical setae 

 arranged at right angles to the surface and one-third as long as the neck is wide. 

 No somatic setae have been seen. Apparently at every eight to ten annules 

 along the lateral lines there are pores, each with its longest diameter arranged 



, tat lh transversely. Seemingly there are six, very minute, more 



or less amalgamated lips. Posteriorly the neck is cylin- 

 droid, anteriorly conoid. Amphids are present in the 

 form of straight transverse slits, one-sixth as long as the 

 corresponding diameter of the head, and located between 

 the bases of the submedian cephalic setae. Their presence 

 and their form is proved by the ribbon-shaped outflow 

 plainly seen issuing from each amphid. The cylindroid 

 oesophageal tube ends behind in a broad, pyriform cardiac 

 bulb, two-thirds as wide as the base of the neck. There 

 is no cardia. The thick-walled intestine is separated 

 from the oesophagus by a collum one-tenth as wide as 

 the neck, and Becomes at once one-fourth as wide as the 



* 'ffm" I body. Its lumen is indistinct. Its cells contain fine, 



^^ rather numerous granules of more or less uniform size. 

 set l/Jtt Wjyw g evera i submedian, slender, tapering, cuticular "thorns" 



are seen on the tail, each about one-fourth as long as the anal body-diameter. 

 The lateral fields are one-fourth as wide as the body. The nerve-ring is 

 accompanied by obscure nerve cells. The tail is more or less conoid from the 

 anus, but tapers more rapidly in the posterior half. The strong, tapering, 

 acute, colorless spicula are more or less compound in structure and their extremi- 

 ties appear to lie somewhat ventrad from the body axis. The single, slender, 

 rather strong, simple parallel accessory is three-fifths as long as the spicula. 



Habitat: Sand, Ocean Beach, Miami, Florida, U. S. A. Flemming to glycerine 

 jelly. Fig. 21. 



.6 4.4 7-5 .-*-. .9*-? >iO.. 



22. Cinctonema tenue n. sp> -fi*' ' J 1.4-^1.4 Cuticle thin, naked, 

 its striae not further resolvable. Neck, cylindroid posteriorly, conoid anteri- 

 orly. In the specimen examined the lip-region was not favorable for observation. 

 Oesophagus about half as wide as the head and continuing to have this diameter 

 until after it passes through the nerve-ring, behind which it begins to increase 



