128 MR. H. CHARLTON BASTIAN'S MONOGRAPH 



Sj^ear 0-5^0" lo^^S"- (Esophagus -Jtli of total length ; centre of glohate swelling -^^" 

 from anterior extremity. Intestine covered with rather coarse, scattered granules. Anns 

 -^l—' from posterior extremity. Vulva slightly posterior to anterior f rds of body. Ex- 

 cretory duct opening opposite commencement of posterior third of oesophagus. 



3Iale, not seen. 



Ilah. From sandy soil, adhering to rootlets of wheat-plant, Broadmoor, Berks. 



4. T. OBTUsus, n. sp. (Plate X. figs. 117, US.) 

 Female, length ^V'j breadth yyo'- 



External Characters. — Body tapering very slightly anteriorly, and still less poste- 

 riorly, where it is blunt and rounded. Head rather truncate. Striae transverse, 20000 ' 

 apart. 



S£)ear xtVs" long. (Esophagus -j^th of total length, having a globate swelling about 

 its middle. Intestine sparingly covered with light-coloured granules. Anus xkb" froi^ 

 posterior extremity. Vulva near commencement of posterior third of body. Excretory 

 duct opening slightly posterior to middle of oesophagus. 



Hale, length ^3", breadth tto"- 



Anus y^jo" from posterior extremity. Spicules roVo" long. Accessory piece about 

 half as long, posterior, median. Alai membranous and transparent, extending on either 

 side from a little above anus to posterior extremity. 



Hah. Sandy soil, about the rootlets of oats, Broadmoor, Berks. 



5. T. DiPSACi, Kuhn. 



Anyuillula Dipsaci, J. Kiihn, in Schles. Jahresber. 1857, PP- 50-5.3. — Idem, in Zeitsch. fur Wissensch. 

 ZooL ix. (1857) 129-137, tab. vii. C— Diesing, Sitzungsb. der Kais, Akad. Bd. xlii, (1861) p, 628. 



" Corpus antrorsum attenuatum transparens. Caput obtusum, rotundatum. Cauda 

 sensim acuminata recta v, paulo incurvata, Apertura genitalis feminea retrorsum sita. 

 Ovipara. Longit, corp. ^-f", crassit. i-^'" ; longit. caudte maris (a peue) ^5, femina? (a 

 vulva) \ corporis longitudinis." 



" (Esophagus postice bulbosus." 



" Hal). In anthodiis dcpravatis Dipsaci fullonum, Junio {Kiihn)." 



C. T. AGUOSTIDIS. 



Vibrio graminls, Steiabuch, in Naturf. xxviii. St. p. 233, tab. v., et ejus Analecten, 9/3 135, tab. ii. figs. 1-6. 

 Anyuillula graminearmn (in part), Diesing, Syst. Helmintb. ii. p. 132. 



It seems to me most probable that this species is distinct from Tylenchus tritici ; the 

 determination of this question, however, must be left to future observers. 



13. EHABDITIS, Dujardin. 

 Anyuillula, Grube. 

 Gek. Char. Body tapering at extremities. Caudal sucker none. Integument having 

 longitudinal as well as transverse striae ; setic none ; papillae none. Tharyngeul 

 cavity long cylindrical, (Esophagus distinctly muscular, having two swcUings, 



