Cobb — Nematodes, mostly Aiistralian and Fijian. 29 



..60 



3. B. australis, n.sp. (?). I's 's-s "'3 '%» ^Vi i-i «"«. Cuticula finely transversely- 

 striated ; neck conoid, convex anteriorly ; head somewhat pointed, truncate at the 

 lips ; lips six, conical, each with a setose papilla ; pharynx simple, prismoid, tapering 

 at the base, about one-third as wide as the head and more than twice as deep as wide ; 

 anterior three-fifths of the oesophagus cylindroid, about one-third as wide as the 

 corresponding part of the neck ; cardiac sucking bulb ellipsoidal, half as wide as the 

 base of the neck, connected with the wider anterior three-fifths of the oesophagus by 

 a tube one-fifth as wide as the corresponding part of the neck ; intestine thin-walled, 

 four-fifths as wide as the body ; rectum as long as the anal body-diameter ; ventral 

 excretory pore just behind the nerve-ring ; tail conical ; vulva slightly elevated ; 

 vagina extending forward half-way to the cardiac region and containing spermatozoa 

 near the flexure ; ovary very long, reflexed and extending backward to near the anus ; 

 eggs ellipsoidal, as long as the body is wide and two-thirds as wide as long, thin-shelled, 

 perhaps deposited before segmentation begins. 



Hab. — Grass, Sydney, New South Wales, Australia. 



40 



4. E. monhystera, Biitschli. H ^%i ^""^ T "L ■'■"™- The cuticula of this cosmo- 

 poHtan species is traversed by about four hundred transverse striae. The posterior 

 half of the neck is conoid, the anterior half convex-conoid. The truncate head, devoid 

 of setse, is surmounted by six spherical lips having a height equal to one-third the 

 length of the pharynx, and each surmounted by a conspicuous projecting papilla. 

 The simple cyhndroid pharynx is about one-fourth as wide as long. The median 

 oesophageal bulb is of about the same length as the pharynx and is one-half as wide 

 as the neck ; that portion of the oesophagus leading to it is a little more than 

 one-third as wide as the neck, and that portion leading from it to the posterior bulb 

 is a trifle narrower than that. The prolate posterior bulb is a little wider still than 

 the median bulb and contains a distinct chitinous valvular apparatus. The cardiac 

 coUum is distinct. The ventral excretory pore is situated opposite the anterior part 

 of the hindmost bulb. The oblique nerve-ring passes ventrally backward. The tail 

 is conical to the pointed terminus. The lateral fields are one-fourth as wide as the 

 body. The narrow, reflexed ovary extends from one-fourth to one-half the distance 

 back to the vulva. Passing round the bend the ova are fertilised and then develop 

 in the uterus, those near the vulva being always more advanced than the others. 



3° 'e-i — 6-8 7-7 — 3"- ■^™"- The tail of the male is conical and pointed ; it is completely 

 enveloped by the bursa, which begins opposite the proximal ends of the spicula. 

 The ribs of the bursa are distributed in three groups : 1, a pre-anal group of two 

 opposite the middle of the spicula ; 2, a post-anal group of three occupying the 

 anterior third of that part of the bursa behind the anus ; 3, a post-anal group of 

 three near the end of the tail. I saw on one specimen what appeared to be a ventral 



