ARNILIA. 



255 



AA. Last ventral segment of the male abdomen provided on each side 

 with a more or less prominent spine or tooth, or the apex 

 furnished with flattened decurved lobes. 

 b. Subgenital plate or last ventral segment of male abdomen 

 adorned at sides with teeth or finger-like projections. 

 c. Larger (length, <? 25-28, ? 28-83 mm.). The last dorsal 

 segment of the male abdomen unadorned with black of 

 fuscous, the margins of the supra-anal plate alone so 

 marked *. 

 d. Last ventral segment of the male abdomen greatly elon- 

 gate, more than twice, almost three times, as long as its 

 basal width, the apical portion narrower, elongate, spatu- 

 late, and excavated above, about twice the length of the 

 lateral teeth. (South-eastern United States.) .... 

 dd. Last ventral segment of the male abdomen only about 

 twice as long as its basal width, the apical portion broadly 

 spatulate and fully two and one-half times the length of 

 the lateral teeth. (Costa Rica and Nicaragua.) . . . 

 cc. Smaller (length, $ 21-24, ? 25 mm.). Hind margin of 

 the last dorsal segment of the male abdomen adorned with 



black 4. minor, Bruner. 



bb. Subgenital plate of male deeply fissured, the lateral pieces 

 greatly flattened and bent backwards, their outer margin 

 bowed. 

 c. Smaller and more slender (length, £ 24, ? 32 mm.). An- 

 tennae ferruginous, normal. (Trinidad I. and British 



Guiana.) [6. jissicauda, sp. n.] 



cc. Larger and more robust (length, $ 27, ? 36 mm.). An- 

 tennae inf uscated, heavy, and longer than usual. (Colombia.) 7. Colombia, sp. n. 



[2. vitreipennis, Marsch.] 



3. marschalli, sp. n. 



1. Arnilia viridis, Serville? 



Opsomala viridis, Serv. Rev. Orthopt. p. 77 (1831) l ; Hist. Orthopt. p. 588 (1839) a . 

 Arnilia viridis, Bruner, Proc. U.S. Nat. Mus. xxx. pp. 659, 660 (1906) 3 . 



Hab. Nicaragua, Chontales (Janson). 



A single female. The insect referred here with some doubt has been preserved in 

 spirits and subsequently pinned. It is somewhat smaller and a trifle more slender 

 than A, coccineipes, Bruner, from Southern Brazil and Paraguay. No locality was 

 given by Serville x 2 . 



* Another apparently distinct species, A. joropinqua, No. 5, is at hand ; but, being represented by females 

 only, it cannot be located in the table. The description follows in the body of the work, see p. 257. 



