230 ORDER LITINIA 



I. Order Litinia 



.4 lj.4 28. '-61 88. 



1. Litotes minuta n. sp. - 7 " * 5-i 3.2 ~ Cuticle thin, naked. 

 The mouth opening is almost imperceptibly depressed. The conoid neck carries 

 a conoid oesophagus. The presence of amphids is indicated by slight, narrow 

 external markings of a very faint character. In the region of the nerve-ring the 

 oesophagus is three-fifths as wide as the corresponding portion of the neck, while 

 finally it is five-sixths as wide as the base of the neck; its lining is indistinct, 

 its musculature fine and colorless. No oesophageal glands. The intestine 

 becomes at once three-fourths as wide as the body, is thin-walled, and but few 

 of its cells are required to complete its girth. The intestinal lumen is distinct. 



q>hffl(6) The distinct cardiac collum is two-thirds as wide as the body. 

 [ I tm ^ ear i^ s beginning the intestine is pressed well to one side by 

 |jf the renette cell, which is more or less ellipsoidal in form and 

 oe -P: v x 750 granular in structure. It is about as long as the body is wide 

 and about half as wide as long, and contains a very indistinct nucleus of medium 

 size. There are few granules in the cells composing the intestine. The tail 

 is conoid. Nothing is known concerning the longitudinal fields. The nerve- 

 ring is medium-sized and accompanied by more or less distinct groups of nerve 

 cells. The small indistinct vulva is more or less continuous with the ventral 

 surface of the body. The rather weak, tubular, non-refractive vagina extends 

 obliquely forward apparently about half way across the body. The ellipsoidal 

 granular eggs are about three times as long as the body is wide, and nearly one- 

 third as wide as long. The broad, tapering ovary contains six to eight ova 

 arranged single file. 



Habitat: Algae, near the lighthouse, Bahia, Brazil. Bears some resemblance 

 to Monhystera and Oxystoma. Differs from Monhystera in having no pharynx 

 and no distinct amphids; from Oxystoma in the form of the amphids and the form 

 of the female sexual organs. Sublimate to balsam. Fig. 1.* 



2. Nemanema simplex n. sp. Head with faint traces of papillae on the outer 

 part, indicated by refractions in the cuticle. Possibly the exceedingly minute 



/g\ or pharynx contains an acute, forward-pointing projection or tooth, but 



] w all details are so exceedingly minute that even under the very highest 



" *9J powers of the microscope they are resolvable with difficulty. The 



Jimpn oesophagus expands but little until after it passes through the nerve - 



\^ x75o ring; thereafter it expands until near its posterior extremity, where 



, I 74 it is two-thirds as wide as the base of the neck; 



^ .9,17 i. n T8 >2-5 " the posterior extremity of the oesophagus stains 



somewhat differently from the rest. Cardia large, 



.2 9.i.-H2i. "-* 97-^ ._. conoid, half as wide as the base of the neck. From 

 the distinct cardiac collum the intestine becomes 



at once two-thirds as wide as the body; its cross-section comprises about six 

 cells. The lateral fields are about half as wide as the body. When viewed dorso- 

 ventrally the amphids are seen to be connected with refractive, cutinized ducts 

 which lead inward and backward for a short distance and then become indefinite. 

 Tail conoid, its terminus three-fifths as wide as its base. The large, elongated, 

 narrow caudal glands lie tandem on the ventral side in front of the anus, the 

 foremost being removed from the anus a distance three to six times as great as 

 the length of the tail. Observations on the ventral gland and excretory pore 



Each figure is designated by the number of the genus it illustrates. If two species of the genus 

 are illustrated, the figures are designated a and ft, respectively. 



