SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 91 



eter gradually decreasing from proximal to distal ends ; the short 

 right spicule (fig. i. f/) about 675 /x long when measured in a straight 

 line from end to end, describing two shallow loops, and with edges 

 serrated except at extreme anterior and posterior ends. Posterior 

 portion of body truncated or broadly rounded, usually with the two 

 spicules extruding for a considerable distance out of the cloacal open- 

 ing. Tip of tail in specimens somewhat shrunken as illustrated in 



J 



Fig. I. Diplotriaena scrratospicula, n. sp. ; a, lateral view of female; b, trident; 

 c, ventral view of posterior extremity of male ; d, enlarged view of short 

 spicule of male. 



figure ic ; shrinkage due apparently to the fixing reagent. If any 

 caudal papillae were present it was impossible to recognize them. 



Female 75 mm long by 750 /a wide near equator of body. Body 

 color the same as in male. Anterior part of esophagus about 224 fx 

 long and 48.5 /x wide, and posterior portion 4.65 mm long and about 

 104 [JL wide. Nerve ring 187 ju. from anterior extremity. Trident 11 J t^ 

 long and very similar in appearance to that of male. Vulva (fig. i, a) 

 rather prominent, 300 to 375 jx from anterior end. True vagina or 



