334 On Three new Parasitic Nematodes, 



recorded from a rhinoceros, in having a tail (in the female) 

 only about one-seventh as long at that of C. longicaudatus, 

 and also in having the excretory pore situated much nearer 

 to the anterior end. , 



Strongyluris calotis^ sp. n. 



Host : Calotes nigrilabris. 



Position : rectum. 



Locality : (/eylon. 



Length: male, 8-9-ll*l mm.; female, 11-13"65 mm. 

 Maximum thickness : male, 0"4-0'5 mm. ; female, 0*55- 

 0'75 mm. Diameter of head 0"06-0'08 mm. Lips with 

 lateral and anterior cuticular flanges. Neck forms a 

 '^ shoulder'^ behind base of lips, and a second '^ shoulder ^^ 

 is formed further back by a cuticular inflation covering part 

 of the pharyngeal and oesophageal regions. Distance from 

 anterior end to end of oesophagus (including bulb) 1*75- 

 2*25 mm. Intestine expanded at junction with oesophagus, 

 and again in front of rectum. Tail, in both sexes, with a 

 minute terminal spike. 



Male. — Caudal end abruptly truncate, sucker and cloaca 

 opening almost posteriorly. Chitinous wall of sucker very 

 deep (0*12-0'16 mm.), and 0'14-017 mm. in outside 

 diameter. Spicules subequal, 75-0*8 mm. long. Ten 

 pairs of caudal papillae (seven postruial and three at ^ides of 

 sucker). 



Female. — Tail 0*22-0*25 mm. long, bluntly rounded 

 except for terminal spike. Vulva a transverse slit with 

 prominent lips, at 4*7-5*65 mm. from posterior end. Eggs 

 measure 0*0875-0 0975x0*05-0*0525 mm., and contam 

 early embryos when ready for laying. 



Tetragompliius procyonis, gen. et sp. n. 



Host : raccoon [Procyon sp.). 



Locality : Zoological Gardens, Calcutta. 



Length : male, 13-15 mm. ; female, 16-20 mm. Maxi- 

 mum thickness: male, up to 0*46 mm.; female, up to 

 0*65 mm. Head small, about 0*14 mm. in diameter, bent 

 dorsally and followed by a long, tapering neck. Buccal 

 capsule cup -shaped, less elongated than in U7icinaria, 

 furnished at its entrance with a pair of poorly-developed 

 ventral semilunes. At its base two pairs of teeth : a sub- 

 dorsal pair, biscuspid and 11-18 /jl high, and a subventral 

 pair, bi- or tridentate (usually the latter)^ about 43 /m high. 

 Dorsal gutter a blunt tubercle at base of capsule-wall. 

 Stout, backwardly-directed cervical spines at 0*6-0*7 mm. 

 from anterior end. Oesophagus about 0*65 mm. long and 

 up to 0*13 mm. thick. 



