684 On Two Strongylata from Swine in (he ]\icific. 



capsule's attacliinont to tlio cesophagns anil angular in lateral 

 view. Tlie dorsal ccso|)li!i<j;eal glautl iliscliavges tliiough a 

 tunnel ill the ni id-dorsal line, and oj)ens unprominently into 

 the oral cavity. 



The male has a length oE 4'5* and a niaxinuiin breadth 

 about the equator of 0"275. The dorsal rays are united lor 

 nearly three-quarters of their length, the ununited portion of 

 each ray abnost immediately bifurcating into an outer thin 

 and an inner stout branch, tlie latter again dividing. Tlic 

 bases of the externo-dorsal rays occupy, not quite symmetri- 

 cally, the second quarter of the dorsal ray. The lateral rays 

 spring from a common base ; the dorso-lateral is the stoutest, 

 separated from the medio-lateral by a deep cleft, both rays 

 having a dorsal trend ; the extei no-lateral, separated from 

 the medio-lateral by a somewliat shallow cleft, has a slight 

 ventral trend : the ventral rays are apposed, the prebursal 

 pajiillfc are long. The equal and similar spicules measure 

 U"275 long, are genti}' tapering, and liave their fine rounded 

 ti|)S curved posteriori}' ; the accessory piece is 0*09 long. 



The female has a length of (5 and a maximum breadth 

 about the equator of 0'325. The distance between the 

 anterior end and the cervical j)apill{e, nerve-ring, and excre- 

 tory pore is O'iiTo ; the distance of the end ot the oesophagus 

 from the anterior exti-emity is 0"75. I'he vulva lies 2"4 from 

 the tip of the conical tail ; the intia-uterine ova measure 

 0-OG by 0-04. 



Crassisoma samoense, sp. n. 



Stoutish, short, bursate nematodes, with the oral apeitnre 

 dorso-subterminal and guarded ventrally by a pair of semi- 

 lunes. The oral capsule is nearly globular (the oral cavity 

 corresponding to its sliaj)e and size) and is provided with a 

 })air of large basal subventral teeth, each irregularly quadii- 

 lateial in shape, attached by its ventral border and promi- 

 nently ])ointed at its free angles. The dorsal oesoi)hageal 

 gland discharges through a tunnel in the dorsal mid-line and 

 oj)ens un|)rominently into the oral cavity. 



The viale has a length of 5*27 and a maximum breadth 

 about the vesicula seminalis of 029. The dorsal rays are 

 united ior about seven-eighths ol their length ; the free 

 portion divides much as does the corresponding ray of 

 (jlohocephdlus coniiorfdii. The externo-dorsal rays spring 

 Irom the bases of tlie united dorsal rays ; the other rays 



* All mtasurements are in millimetres. 



