BY VERA A. IRWIN-SMITH. 



809 



outer row (o.r.), and eiglit in each inner row (i.r., i.r .); and tlie 

 length of the rows is about 0'148 mm. The setae are short, the 



inner shorter than the 

 outer. They measure re- 

 spectively 0'015 mm., and 

 0-026 mm. They are all 

 rather slender, and tapei- 

 distally. The end-segments 

 are small and expanded, 

 with two, small, lateral 

 „ . -.y processes. 

 -V.r -^^9 '^ ' The cuticle covering the 

 U body is much thicker than 



Fig.oT.— X. cryytoctplmhim, n.sp. »i any othei' species ex- 



Trunk in region of ventral setae, showing amined from New South 

 the character of the striations on cuticle, AVales' and the transverse 

 and the arrangement of the set.ne; ( x 650). ^^^^^ ^^.^ ,,^j,^, x^vO'^A, with 



fairly wide intervals between them (Fig. 57). They number 

 about 200, and are of the same character and size all over the 

 body. 



Fig. .")S. — y. i-ryptoctphalum. 

 Lateral view of anterior end; ( x 860). 



The smooth rostrum (Text-fig. 58, r.) at the anterior end is 

 "OSS mm. long. It bears two rows, each of four dorsal set;e(f/.,s\), 

 about midway between the beginning of the striated area and 



58 



