262 The Philippine Journal of Science isia 



cF. Proboscis I as long as body. Anal trees thin and brown and over 



half as long as body. T. semoni Fischer. 



d'. Proboscis short. Anal trees short T. sabinum Lanchester. 



c^ Longitudinal muscles forming bundles which may or may not be 

 separated by "intervals." 

 d\ 7-8 muscle bundles. Proboscis i as long as body. Anal trees 



broad and sac-like T. formosulum Lampert. 



(f . 8 muscle bundles. Proboscis several times as long as the body. 



T. mellita Conn. 



ep. 8-10 muscle bundles. Anal trees small T. exilii Fr. Miiller. 



d^ 13 muscle bundles. Proboscis longer than body. Anal trees 

 short with simple diverticula, each ending in a funnel. 



T. pellucidum Fischer. 

 cT. 14 muscle bundles. Anal trees longer than half the body. Rectal 



diverticulum present T. manjuyodense Ikeda. 



d'. 17-19 muscle bundles. Proboscis shorter than body. Anal trees 



long with short branching outgrowths T. baronii Greef. 



&'. Forms possessing 3 pairs of nephridia. Always with spirally coiled 

 internal openings, 

 c'. Anterior pair of nephridia opening in front of ventral setae. 

 d\ Longitudinal muscles continuous. 



e'. Proboscis one-half as long as body. Anal trees long and brown 



with few small funnels _ T. inanense Ikeda. 



e'. Proboscis as long as body. Anal trees long and brown with 



microscopic funnels T. moebii Greef. 



d'. Longitudinal muscles forming bundles which may or may not be 



separated by "intervals." No interbasal muscle. Funnels of 



anal trees always sessile. 



e'. 13 muscle bundles. Proboscis over i as long as body. Anal 



trees long with microscopic funnels. Rectal diverticulum. 



T. sorbillans Lampert. 

 e'. 14 muscle bundles. Proboscis shorter than body. Anal trees 

 thin and brown. Rectal diverticulum. 



T. erythrogrammon Max Miiller. 

 e*. 15-16 muscle bundles. Anal trees i as long as body with 



prominent funnels T. stublmanii Fischer. 



e*. 15-17 muscle bundles. Anal trees with numerous funnels. Rec- 

 tal diverticulum T. leptodermon Fischer. 



e^ 16-18 muscle bundles. Proboscis I as long as body. Anal trees 



with long brown tubes T. caudex Lampert. 



e'. 17-18 muscle bundles. Proboscis short. Anal trees with well- 

 marked funnels T. kokotoniense Fischer. 



e'. 17-18 muscle bundles. Proboscis § as long as body. Anal trees 

 I length of body with small funnels. Rectal diverticulum. 



T. grifani sp. nov. 

 c*. All three pairs of nephridia open behind the ventral hooks. Longi- 

 tudinal muscle continuous, 

 d'. Proboscis absent (?). Anal trees thin, long, and brown. 



T. vegrande Lampert. 



d'. Proboscis short. Anal trees h the length of body with small 



funnels T. mucosum Ikeda. 



