Vol. XXV] ENTOMOLOGICAL NEWS. 4O1 



line on the dorsum, is a line of small tubercles, one on each seg- 

 ment. 



The pupa is about half the size of the adult. 



I take great pleasure in naming this interesting species after 

 the distinguished botanist and director of the National Mu- 

 seum of Uruguay, recently deceased, who was the father of 

 the study of natural history in Uruguay. The Flora Uruguay- 

 ensis will cause Dr. Arechavaleta's name to be respected for all 

 time. 



Subfamily DARNINAE. 

 Genus Stictopelta. 

 1869. Stal, Hemip. Fabr. II, p. 32. 

 S. latilinea Walker, List Horn. Brit. Mus. Suppl. p. 147. 1858. 



There are two examples in the Uruguayan National collec- 

 tion, labeled "Uruguay" ; Walker's material was received from 

 Constancia, Province of Rio, Brazil. 



S. limbata Burm. in Silb. Rev. Ent. IV, p. 173. 1836. 



Four examples are in the Uruguayan National collection, 

 from Uruguay. 



Genus Cryptoptera. 

 1869. Stal, Hemip. Fab. II, p. 32. 

 C. acutula Fairm. ibid. p. 481. 1846. 



Although this genus is widely distributed from Mexico to 

 the River Plate, acutula is the only species so far found here. 

 The two examples in the Uruguayan National collection are 

 smaller than Fairmaire's type, but otherwise agree with his 

 description. 



Hab. Uruguay. Also Mexico, Panama, Brazil (Fowler). 



Genus Pyranthe. 



1867. Stal, Ofv. Vet-Ak. Forh. p. 558. 

 P. acaciae Berg, Add. et Fmend. Hemip. Argent, p. 152. 1884. 



It is closely related to Stal's bimaculata and laticornis, but 

 differs from both in the robust, acuminate humeral horns 

 which are directed- a trifle upward and backward. 



Berg describes the larva which, with the mature insect, is 

 found on Acacia farnesiana Willd. The Uruguayan National 

 collection possesses one female. 



Hab. Uruguay. 



