Oomphine Dragonflies from South America. 137 



Pferostigma broad, 7 mm. long, covering from seven to nearly 

 nine cells, opaque, very dark red. Tlie cells between Mj and 

 Ks beginning to be doubled at the level of the proximal end 

 of the pterostigma. The trebling of the post-trigonal cells 

 beginning a little before (hind wings) or well before (fore 

 wings) the level of separation of Mi+2' Cuj and Cti2 in hind 

 wing rather strongly divergent ; five to six cells between 

 them at the wing-margin. 



The only leg preserved is a detached one, of moderate 

 length ; the coxa and part of the femur pale, the tibia and 

 tarsus black. 



Abdomen swollen at base, slightly constricted at segment 3, 

 somewhat dilated laterally at 8 and 9. Black, with yellow 

 markings, as follows: — Sides of segment 1 mostly yellow ; a 

 mid-dorsal line and two pairs of large lateral spots on seg- 

 ment 2 ; a pair of large lateral markings on the proximal half 

 of 3, Z-shaped on the left side and formed like an inverted Z 

 on the right side, the distal transverse portion of each marking 

 almost touching its fellow on tlie dorsum ; a pair of similar 

 but smaller markings on •! ; a pair of large, irregularlj'-shaped, 

 lateral spots t.t the base of 5 ; a pair of large, oblong, dorsal 

 spots, separated by the mid-dorsal carina, at the base of 7 ; 

 6, 8, 9, and 10 apparently immaculate. Anal appendages 

 about as long as segments 9 and 10 taken together, convergent, 

 almost straight, ending in a sharp point, black in the basal 

 third, pale yellow beyond. Vulvar lamina (PI. VII. fig. 11) 

 black and consistin<^ of two strong parallel spines, fused 

 together for more tiian three-quarters of their length, and 

 gradually tapering towards their distal extremities, which 

 are well separated, pointed, and divergent, and extend a little 

 beyond the apical margin of segment 9. Between the vulvar 

 lamina and the ninth sternitewere found a number of orange- 

 yellow ova of the broad exojjhytic type. Tliese were very 

 small for such a large insect, the length of tiiose measured 

 being 'S-'G mm., and the width •3-'35 mn). 



The measurements of Z. hodkini exceed those of the largest 

 Zonopliora hitherto described — namely, the unique male of 

 Z. batesi, Selys *. It also extends the known range of the 

 genus northwards, as the three older species were all described 

 fr- ni Brazil. 



* In the earliest description of tlie female of Zonophora campamduta, 

 ]^iu-in. (Bull. Acad. Belg-. xxi. (2) p. 80, 1854), De Selys gave the length 

 of the abdomen as 58 mm., which is also the length of the abdomen in 

 the 5 type of Z. bodkini. This figure is obviously a misprint for 50 mm., 

 the measurement stated by the same author in 185i< (.Monogr. Uomph. 

 p. 234). 



