312 PROCEEDINGS OF THE NATIONAL MUSEUM 



/ 

 J 



^b p 







n 



m 



Figure 2. — Right hand mandible of 16 species of Trochilophagus: a, species not described 

 from Haplophoedia a. aurelia; b, species not described from Aglaiocercus kingi mocoa; c, T. 

 irazuensisus; d, T. mexicanus; e, T. latitemporalis; f, species not described from Leucippus 

 fallax cervina; g, T. brevicephalus; h, T. oenonae; i, species not described from Amazilia 

 fimbriata nigricauda; j, species not described from Amazilia lactea bartletti; k, T. abdomi- 

 nalis; I, T. peruanus; m, T. mellivorus ; n, species not described from Lepidopyga lumi- 

 nosa; o, species not described from Thalurania furcata jelskii; p, T. multicarinae. 



mandibles, and is entirely retractile (see fig. la showing muscular 

 attachments). The oesophageal sclerite and accompanying glands 

 are absent. 



Genus Trochiloecetes Paine and Mann, 1913 



Trochiloeceles Paine and Mann, Psyche, vol. 20, p. 21, 1913. 



Type species: Physostomum prominens Kellogg and Chapman, 1899. 



Key to the Species of Trochiloecetes 



MALES 



Body length 1.60 or less Section A 



Body length 1.70 to 1.80 Section B 



Body length more than 1.90 Section C 



SECTION A 



a. Sides of frons angulated; sides of temples slightly convex and with eye promi- 

 nent; occipital margin strongly sinuate; prothorax not extending under the 

 head and with posterior margin flatly rounded; frontal carina wide medi- 

 ally, with large, circular aperture; abdominal submarginal carinae narrow, 

 with prominent articulations aglaeacti 



a'. Sides of frons rounded; frontal carina narrow and with small aperture; sides 

 of temples strongly convex; eye not prominent; occipital margin uniformly 

 concave, with slight median angle; prothorax extending far under occiput; 

 abdominal submarginal carinae wide, with articulations scarcely swollen. 



quihtloensis 

 SECTION B 



o. Frons concave. 



b. Frons narrow (0.30); temples angulated at eye; occipital margin strongly 

 sinuate; submarginal transverse carina across frontal region faintly pig- 

 mented, as well as preantennary carinae; temples with posterior portion 



