J^ew South Wales. 171 



5. T.diibius.Biitschli. 1^ 'I "''* ^^ -T^mn. Cuticula presenting about 

 «cven hundred fifty transverse striie. The rounded head is destitute of 

 papilla) and lipless, although a lip region is set off by constriclion ; prolate 

 median bulb central, one-half as long as the adjacent part of the neck is 

 Avide ; conoid posterior swelling nearly as wide as' the intestine, which is two- 

 thirds as wide as the body and composed of cells loosely packed with 

 granules ; porus excretorius at twelve per cent. ; tail cvlindroid, diminishing 

 at last. 



Tail, unlike that of the female, conical and 



completely enveloped by the bursa, which extends far enough forward to be 

 symmetrically arranged with respect to the anus, and presents at the middle 

 of the tail a pair of ribs extending nearly to the margin ; a single indistinct 

 median papilla opposite the proximo; of the linear spicuJa; these latter 

 nearly two-thirds as long as the tail, arcuate in the distal two-thirds, and 

 presenting proxiraa> cephaloid by a broad constriction ; accessory pieces 

 one-half to two-thirds as long as the spicula. 



This species has been found on roots of plants at Prankfort-ou-the-Maia 

 and also Jena, Germany, and in Holland. 



6. T. gracilis. De Man. -i^^y-^VM- »= + -«• Stria; of the 

 cuticula exceedingly fine; neck diminishing but little; slightly hetero- 

 cephalous, the head being short and rounded in front; spear stout and 

 furnished with three large bulbs at the base; posterior margin of the 

 median bulb at five per cent. ; posterior end of the oesophagus not distinctly 

 seen ; jiorus cvcreforius opposite the posterior margin of the median bulb ; 

 lateral markings on the head. 



— —^ 11 ( 2-1 mm. iJursa completely enveloping the conical posterior 

 extremity, and presenting lateral papilhe a little behind the middle of the 

 tail; the small plump spicula accompanied by short somewhat arcuate 

 accessory pieces. 



Eare in forest and meadow ground, Holland. 



7. T. lamelliferus, De Man. ? ] 'V %+ T ..n,m. Cuticula with 

 exceedingly fine stria;; two lateral and four submedian wings throughout 

 the length ; neck diminishing somewhat to the homocephalous, rounded 

 anterior extremity ; lips and papillsc none ; spear long but slender, with 

 distinct bulbs at the base; median oesophageal bulb large; 2W-us excretorius 

 situated between the median bulb and the intestine ; terminus of the tail 

 rounded. 



3 ? 18'2 M oe;! T) 



? T ? f9 ) '■"'"'• iiursa completely enveloping the posterior 

 extremity, somewhat peculiarly narrowed in front of its posterior terminus, 

 and presenting two lateral papilla; a little in front of the middle of the tail \ 

 the stout spicula accompanied by rod-like arcuate accessory pieces. 

 Eather common in moist ground, Holland. 



8. T. pratensis, De Man. ^V— J— ^—",'^^^T- ■«■>"..• Neck diminishing 

 but little to the somewhat heteroeephalous discoid anterior extremity, 

 which presents two lateral chitinous markings ; lips and papilho none' 

 spear very stout; median bulb nearly spherical, the posterior swelling 

 pocket-shaped; porus excretorius at sixteen per cent.; lateral fields one- 

 Iburth as wide of the body. 



B 



