388 CATALOGUE OF 



Genus no. TORBIA. 



Mas el fcem. Corpus robustum. Capitis carina lanceolata sulcata, 

 antennarum ariiculo lo sequilata; frons convexa, inter antennas lanceo- 

 lata. Oculi rotundi, valde prominuli. Palporum articulus ous clavatus, 

 4o duplo lono^ior. Prothoracis discus planus, postice sublatescens ; cariuce 

 laterales bene determinataB ; margo posticus subrotundatus, subelevatus. 

 Mesosternum et metasternum valde incisa. Pedes longi, sat graciles, 

 spinosuli ; femora postica alarum anticarum dimidio longiora. Alse anticaa 

 lanceolatOB, sublilissime reticulatse, venulis transversis plurimis, vena ex- 

 terno-media rarais qualuov, lo 4oque ftircatis, costa roiundata, margine 

 interiore recto. Mas. — Lamina supra-analis brevis, triangularis. Cerci 

 subarcuati, fere cylindrici. St^-li breves, lanceolali. Fcem. — Oviductus 

 arcuatus, brevissimus. 



Male and female. Body stout. Head hardly narrower than the fore 

 border of the prothorax; keel of the vertex lanceolate, furrowed along the 

 whole length, as broad at iis base as the first joint of the antenna? ; front 

 convex, lanceolate between the sockets of the antenna3. Eyes round, very- 

 prominent, fifth joint of the maxillary palpi clavate, full twice the 

 length of the fourth. Antennae long, slender. Prothorax with a flat disk, 

 which widens slij^htly from the fore border to the hind border; a longi- 

 tudinal impressed line emitting a curved oblique branch on each side for- 

 ward ; lateral keels well defined ; fore border and lateral lobes very slightly 

 concave; hind border slightly convex and elevated. Mesosternum and 

 metasternum deeply notched or forming two lobes. Legs long, rather 

 slender; femora with rudimentary spines; hind femora incrassaied for a 

 little more than half the length from the base, rather more than half the 

 length of the fore wings; tibife with minute spines, those on the hind tibiae 

 on each of the four keels. Wings of equal length. Fore wings lan- 

 ceolate, minutely reticulated; their greatest breadth at somewhat before 

 the middle and about one-fourlh of their length ; costa rounded; interior 

 border straif^hl; transverse veins approximate, very numerous, nearly 

 parallel, here and there forked, oblique between the scapular vein and the 

 costa; externo-medial vein diverging very slightly from the scapular at 

 somewhat beyond halt" the length, emitting four branches, of which the 

 first and the fourth are forked; iuterno-medial and anal nearly straight ; 

 tympanum pellucid, largest in the ri^ht wings. Hind wings with a 

 minutely reticulated apical patch. Male. — Supra-anal lamina short, tri- 

 angular. Cerci nearly cylindrical, slightly curved. Subgenital lamina 

 with two short lanceolate styles. Female. — Oviduct curved, very short, 

 about one-eighth of the length of the abdomen. 



The triangular form of the keel of the vertex and the peculiar 

 structure of the transverse veins of the fore wings sufficiently distinguish 

 this genus. 



1. ToRBIA PKRFICITA. 



Mas et foem. Viridis, lutescente varia ; antenna: rufce^ hasi virides ; alcs 

 postica diaphance, slriga apicali lata viridi. 



Male and female. Green, here and there pale luteous. Eyes tawny. 

 Antennae red, green at the base. Hind wings pellucid; apical patch and 



