4O2 



ENTOMOLOGICAL NEWS. 



[Nov., 1911 



Studies on Costa Rican Odonata. 



II. The Habits of the Plant-dwelling: Larva of Mecistogaster 



modestus.* 



BY PHILIP P. CALVERT, PH. D., 

 University of Pennsylvania, Philadelphia, Pa. 



Announcement has already been made in the NEWS (Calvert 

 1910 a and &) and elsewhere (Ibid., 1909 c, 1911) of the discov- 

 ery, in Mexico by Mr. F. Knab and in Costa Rica by the writer, 



Two epiphytic Bromeliads on a branch of Erytlirina, Cartage, Costa Rica, July 4, 1909. 



Photograph by Amelia S. Calvert. 



of Odonate larvae living in the water which collects between the 

 bases of the leaves of Bromeliads growing upon trees, and of 

 the rearing of the images of Mecistogaster modcstits Selys 

 from these larvae. 



*Number I, on The Larva of Cora, was published in Entomological 

 News XXII, pp. 49-64, plates II and III, February, 1911. 



