and Characters of undescribed Species. 383 



transversely striated; parapsides very minutely punctured, with 

 slight sutures; scutellum punctured, with a distinct longitudinal 

 furrow, emitting two very broad, ridged, slightly curved spines, 

 which extend nearly to the tip of the abdomen. Petiole stout, 

 striated, rather long. Abdomen smooth, much compressed, hardly 

 longer than high ; a little longer than the thorax, but not more than 

 half its breadth. Legs pale yellow; coxae black. Wings limpid; 

 veins tawny ; ulna much shorter than the humerus ; radius ob- 

 solete ; cubitus extremely short ; stigma black. 



Length of the body 2\ lines; of the wings 4 lines. 



Villa Nova. Discovered by Mr. Bates. In the British 

 Museum. 



Thoracantha atrala. 



Mas. — Atra; antennae nigrae, ramis longis sequalibus pubes- 

 centibus, basi piceae ; scutum transverse striatum ; scutellum 

 striatum, spinis duabus striatis arcuatis abdominis apicem 

 paullo superantibus; petiolus gracilis, abdomine raulto longior; 

 abdomen fusiforme, altum, valdfe compressum, thorace fere 

 duplo brevius ; pedes pallide flavi ; alse cinereae. 



Male. — Deep black. Head with very minute transverse striae, 

 as broad as the thorax. Antennae black, with long pubescent 

 branches of equal length ; scape piceous. Scutum transversely 

 striated ; scutellum longitudinally striated, ending in two striated, 

 curved, converging spines, which extend a little beyond the tip of 

 the abdomen. Petiole linear, slender, much longer than the ab- 

 domen. Abdomen smooth, fusiform, deep, much compressed, 

 hardly more than half the length of the thorax and much less than 

 half its breadth. Legs pale yellow ; coxae black. Wings ci- 

 nereous ; veins black ; ulna shorter than the humerus ; radius 

 obsolete. 



Length of the body 3 lines ; of the wings 5 lines. 



In the British Museum. 



This species is closely allied to T. striathsima (supra, p. 380), 

 but the spines of the scutellum are shorter and more curved. 



Thoracantha alta. 

 Foem. — Atra ; antennae nigrae, basi fulvae ; thorax gibbus ; 

 scutum transverse striatum ; parapsidum suturas indistinctae ; 

 scutellum striatum, spinis duabus sub-arcuatis abdominis 

 apicem attingentibus ; petiolus abdominis dimidio vix brevior ; 

 abdomen fusiforme, altum, compressum, thorace paullo bre- 

 vius ; pedes pallide flavi ; alue limpidee. 



