Vol. XXXl] ENTOMOLOGICAL NEWS 159 



Habitat: Canelos, Lliquino, and Yaruquies, Province of 

 El Oriente, (Feyer). Described from four females. 



Dedicated to the memory of my wife, one of the victims of 



yellow fever. 



GUAYAQUILA n. gen. 



Pronotum armed with a compressed porrect horn in front, 

 destitute of lateral carinae but with a percurrent median 

 carina; dorsum flat, broad at humeral angles, gradually at- 

 tenuated to an obtuse apex which reaches tip of abdomen, 

 but shorter than apices of tegmina. Generally golden silky 

 pubescent. Tegmina similar in shape and venation to those 

 seen in the genus Membracis. Wings with four apical cells, 

 second broad and quadrangular, fourth minute. Front and 

 middle tibiae broadly dilated, short; posterior legs three 

 times the length of front legs, hind tibiae with strong sharp 

 spines. Facies of Aconophora. 



Genotype: Guayaqnila roreriana n. sp. 



Guayaquila roreriana n. sp. 



Uniform cinnamon brown, silky pubescent. Front horn with a com- 

 pressed broad edge, not pointed but rounded at apex, convex between 

 superior and inferior borders longitudinally, with a median longitudinal 

 carina, but destitute of lateral carinae. Tegmina semi-opaque uniform 

 brown. Body below brown, posterior edges of abdominal segments and 

 anal segment paler. Tibiae testaceous, spines of hind tibiae black. Long 

 9 mm.; lat. 3 mm. 



Habitat: Machala, Province of El Oro, (Rorer). Described 

 from one male of which the head is wanting. 



This species is named in honor of Prof. J. B. Rorer. 



I desire to express my gratitude to Professors Campos, 

 Rorer and Pachano, and Messrs. Goodfellow and Feyer for 

 a multitude of favors in my endeavor to make the entomology 

 of Ecuador better known. 



Thermotropism in Insects. 



By WERNER MARCHAND, New York City. 



While the phenomena of helio- and phototropism have 

 been extensively studied, concerning thermotropic reactions 

 we have practically no data. The consequences of uneven 



