WHICH DIED IN THE ZOOLOGICAL GARDENS. 907 



of two r.iys fused. 'J'lie antero-lateral and mediaudateral rays 

 are fused together to form one large ray. The postero-lateral 

 and externo-dorsal rays are single and approximately the saxne 

 size. The dorsal ray is single and broad, owing to the fusion of 

 all its elements. 



The spicules are long and equal, they are tesselated through- 

 out and carry pectinate lamellae along their inner edges; each 

 ends in a palmate expansion, the fingers of which are webbed 

 with a cuticular expansion which bears minute spines. The 

 female is ovoviviparous. 



Type-species, Troglosirongylus troglostrongylu,s, sp. n. 



Troglostrongylus troglostrongylus, sp. u. 



Eost. Felis hengalensis. 



Locality. India. 



Habitat. Frontal sinus. 



Specific diagnosis. — Troglostrongylus : Thin filiform greyish- 

 white worms, tapering rather abruptly at eacli end. 



The mouth is guarded by two inconspicuous lips, each bearing 

 two minute papillfe. There is a slight cuticular expansion at 

 the head and extending about 1 mm. along the body ; on this 

 cuticular expansion are faint transverse striations. The rest of 

 the worm is covered with very fine longitudinal striations. 



The oesophagus in both sexes is of the simple muscular bulb 

 type, measuring 500 /a in length and 100 fx in diameter at the 

 bulb. The excretory pore and nerve ring are situated 250 /l« 

 from the anterior end of the body. 



Male. — Measures 12 mm. in length by '4 mm. in breadth. 

 The bursa is small and rounded, with a slight median notch in 

 its margin at the point where the distal end of the dorsal ray 

 meets it. The diameter of the bursa is '5 mm. The rays of the 

 bursa are somewhat asymmetrical. The ventral rays are small 

 and double ; the antero-lateral and median-lateral rays are fused 

 into one lai'ge ray. 



The posterolateral and externo-dorsal rays are single and 

 short, in some cases not reaching the margin of the bursa. The 

 elements of the dorsal ray are fused into one large, broad ray, 

 which terminates in the median notch of the bursa. 



The spicules are equal and measure 2 25 mm. in length; they 

 are dark brown in colour and are tesselated. In addition, along 

 the inner edge of each there are short transverse comb-like 

 projections, which may be single or sometimes divide into two or 

 even three branches. In the distal third these interlock and 

 produce a union of the two spicules. Each spicule ends in a 

 palmate expansion, the cuticular web of which is covered with 

 minute spines. The accessory piece is daggei'-shaped and 

 measures 270 /x in length. 



