Calvert : Odonata of the Neotropical Region. 219 



$ unknown. 



Habitat : — Paraguay, Sapucay, December, 1899, W. T. Foster, 3 

 d\ United States National Museum. 



This species would be referred to Cyclophylla in the Selysian classi- 

 fication ; it differs from the previously described species in its combi- 

 nation of immaculate green sides of the thorax with superior appen- 

 dages of the shape here given. It falls under rubric B of the synopsis 

 of Mexican and Central American species of Gomphoides in Biol. 

 Centr.-Amer. Neurop., p. 153. 



126. Gomphoides dentata Selys. 



Aphylla deniata Ris, Hamburg. Magal. Sammelr. Odon., p. 16. 1904. 



Paraguay, Rio Paraguay below Asuncion, Dec. 24, 1 rj\ Museum 

 of Comparative Zoology, Cambridge, Mass. 



Rio Paraguay below Concepcion, Dec. 30, by H. H. Smith, part 

 of 1 d\ Carnegie Museum, Pittsburgh. 



These specimens measure: abdomen 45, hind wing 34—35 mm. 



The published descriptions do not mention that the hind dorsal 

 margin of abd. seg. 10 has a small median semicircular notch, the 

 diameter of which is about one-half of that of either superior append- 

 age at base. 



The male of December 30 has the green antehumeral stripes con- 

 fluent below for the inner (mesial) half of the width of each, with the 

 green " collier mesothoracique." 



127. Gomphoides camposi sp. nov. 



(Plate VII, fig. 127.) 



d\ Head brown ; frons superiorly, mandibles externally, labium, 

 some indistinct marks on the rear of the head, and occiput green. 

 Superior surface of frons, viewed from in front, concave medially for a 

 depth equal to the diameter of the median ocellus. Hind margin of 

 the occiput slightly convex, with long black hairs. 



Prothorax brown ; thoracic dorsum darker brown ; a greenish- yellow 

 antehumeral stripe (about 8 mm. wide at mid-height) widening anteri- 

 orly, where it is confluent with a transverse anterior mesothoracic stripe, 

 (" collier mesothoracique"), this latter interrupted at the lower end 

 of the mid-dorsal carina ; the antehumeral stripe not quite reaching 

 the antealar sinus above, diverging slightly from above downward 



