ANGUILLULID^E FROM TROPICAL ORCHIDS. 93 



^f- 5 -; lb, head of the same specimen, ^\— ; the two 

 minute points which indicate the spear-collar, are 

 omitted ; Id, tail of a female specimen, 0*9 mm. long, ^f^* 

 Fig. 2. Bhabditis coronata, Cobb, anterior oesophageal 

 portion of a female specimen, 0*6 mm. long, X the 

 excretory pore, ^- ; the two tinted stripes which indicate 

 the pharynx ought to be slightly thinner ; 2b, ventral view 

 of the head of this specimen, ™. 



Plate IV. 



Fig. 1c. Aphelenchus tenuicaudatus , n. sp., tail and 

 anal region of a male, 0'8 mm. long, showing spicula and 

 papillae, 1 \ 7 ° . 



Fig. 2a. Bhabditis coronata, Cobb, head of the same 

 specimen as above, ^j- -^. ; 2c, ventral view of the spicula, 

 ^x 9 -; 2e, tail of a female specimen, 0*556 mm. long, -^f-; 

 2/, free egg with embryo, ^-. 



Fig. 3. Bhabditis oxycerca, n. sp., anterior oesophageal 

 portion of the body of a male, 0*8 mm. long, -^ ; in this 

 figure the lips are not quite symetrically drawn and the 

 two stripes which indicate the pharynx wall ought to be 

 slightly thinner ; 3c, tail and bursa of an adult male, 1 \ 7 ° . 



Plate V. 



Fig. 2d. Bhabditis coronata, Cobb, lateral view of the 

 bursa and of the spicula, -™. 



Fig. 3a. Bhabditis oxycerca, n. sp., head of an adult, 

 ova-bearing female, the ventral side being on the left 

 hand, — T 7 -- 1 the transverse line on the middle of the 

 pharynx ought to be slightly thinner ; 3b, terminal portion 

 of the excretory duct and the pore of a female, 18 1 70 \ 3d, 

 ventral view of the tail and bursa of an adult male, -^- ; 

 3e, ventral view of the extremities of the spicula and of 

 the distally thickened extremities of the lateral portions 



