98 SPOLTA ZRTLAXTCA. 



with two equal spicnla : a wide generally trilobed bursa at the 

 tail end, supported by ribs ; the ribs of the bursa are muscular 

 and terminate with a papilla ; head without buccal capsule, plainly 

 rounded or with simple lips, frequently with six papillae ; in the 

 female the vulva lies behind the middle of the body, 



15, — Stroyigylus pigmentatus, n.sp. 

 PI. I.. %s. 12, 13. 



From stomach of hare, Lepun ntgricollis, Cuv., Ranna, Southern 

 Province. 



This species is allied to Strongylus retortceformis^ Zed. 



The cuticle is annulate ; the head trilabiate, each lip carrying on 

 its summit a small papilla ; the oesophagus occupies in the male 

 ^^y in the female -^^ of the total length ; the tail is acuminate ; 

 oesophagus, testes, uterus, eggs, and especially the ovaries are 

 coloured black. 



Size of the male 7*7 mm. by 0'12 mm. ; the spicula are short, 

 0*68 mm. ; they are pale brown, and have at the root a scutiform 

 appendix: they terminate behind in three branches, of which 

 the largest is rounded, the others pointed ; the bursa has two 

 strong lateral lobes and a very narrow median lobe ; the latter is 

 supported by a rib which bifurcates, and each branch again divides 

 into two branchlets which lie close beside one another ; the outer 

 branches are the shorter ; the lateral lobes of the bursa are each 

 supported by six slender ribs. 



The female is 10"5 mm. long by 0"]4 mm. broad ; the tail is 

 ■^^ of the total length ; the vulva is situated posteriorly, dividing 

 the body in the proportion of 37 : 11 ; the eggs are 0*062 mm. 

 long and 0036 mm. broad. 



The species differs irom Strongylus retortceformis, Zed.,* in the 

 formation of the head, the pigment, the cirri or spicula, and the 

 position of the vulva. The spicula of S. retortceformis end in 

 a point and are undivided and twisted ; the vulva of this species 

 is only 0*75 mm. distant from the end of the tail, in contrast with 

 S. pigmentata, where it lies 2-46 mm. from the caudal extremity, 

 the two species being approximately equal in size. 



Cylichnostomum. 



Belongs to the Strongylidae, Schneider's Meromyaria, and the 



Secernentes ; at the head there is a buccal capsule surrounded by 



two lateral aud four sub-median papillae, the lateral projecting 



freely above the cuticle ; the lumen of the capsule is lined by a 



'* See W. Stodter. Die Stroniryliden in dem Labma^en der gezahmten Wieder- 

 kaner. Hamburg, 1901. pp. 76-86. 92 : tab. XI.. fips. 6-8. tab. XII. 



