STENOPOLA.— HENIA. 261 



Synopsis of the Species of Stenopola. 



A 1 . General colour bright yellowish-green, the tipper half of the sides 



of the thorax and the disc of the tegmina infuscated. Hind tibiae 



and tarsi unicolorous, green-blue 1. xant hochlora, Marsch. 



A 2 . General colour pale greenish-yellow, the upper half of the sides of 



the thorax and the tegmina not much infuscated. Hind tibiae and 



tarsi varicoloured, the first and second joints of tarsi carneous . . 2. limbatipennis, Stal. 



1. Stenopola xanthochlora, Marschall. 



Gryllus xanthochlorus, Marsch. Ann. Wien. Mus. i. pp. 215, 216, t. 18. fig. 7 (1836) \ 



Stenopola xanthochlora, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xii. no. 301, p. 4 (1897) \ 



Hab. Panama, Forest of Eio Cianati, Darien 2 . — South Ameeica, Brazil l . 



This insect certainly occurs further to the northward along the Isthmus into Costa 

 Rica, where it should be looked for among the grasses growing about water, as the 

 margins of streams, swamps, and lakes or lagoons. 



2. Stenopola limbatipennis, Stal. 



Stenopola (Oxyblepta) limbatipennis, Stal, Recens. Orthopt. i. p. 85 (1878) \ 

 Stenopola limbatipennis, Bruner, Journ. N. York Ent. Soc. xiv. p. 154 (1906) 2 . 



Hab. South America, Remedios in Colombia 1 , Trinidad 2 . 



HENIA, Giglio-Tos. 

 Henia, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xiii. no. 311, pp. 45, 55-56 (1898). 



This genus of locusts, which is related to Stenopola and Cornops, is included on the 

 grounds that the majority of these subaquatic insects of the Tropics are generally more 

 widely distributed than are the forms which occur in localities away from aquatic 

 vegetation. Only a single species is known. 



l. Henia frenata, Marschall. 



Gryllus frenatus, Marsch. Ann. Wien. Mus. i. p. 212, t. 18. fig. 4 (1836) '. 



Henia frenata, Giglio-Tos, Boll. Mus. Zool. Anat. Comp. Torino, xiii. no. 311, p. 56 2 (1898). 



Hab. South Ameeica, Don Diego, Colombia (H. H. Smith, in coll. Carnegie Museum), 

 Ecuador 2 , Brazil. 



There is scarcely any doubt about the Colombian specimen being referable to the 

 Gryllus frenatus of Marschall. It approaches very closely to Stenopola, but may be 

 sufficiently distinct to form a separate genus if we consider the external sculpturing 

 of the hind femora of generic value. 



