504 HEMIPTERA. 



vures. Mesosternum with a double keel forming a canal for the 

 reception of the rostrum. Thighs unarmed. Tarsi three-jointed ; 

 basal joint as long as the others together ; second joint shortest. 



1. AULACOSTERNUM nigro-rubrum, n. s. PL XIX. fig. 6. 



A.rubrum,punctatum,thorace antice,pectore, scutello, membrana, 

 ano pedibusque nigris ; antennis nigris, articulis secundo et 

 tertio rubro-annulatis ; ultimo rubro basi nigro. 3 ? . 

 Long. lin. 6J. 



Head red, faintly punctured. Thorax red, thickly and rather 

 strongly punctured, with the lateral angles prominent, somewhat 

 acute ; three black spots close to the anterior margin, sometimes 

 confluent, forming a black band, and sometimes a black spot near 

 the middle of the posterior margin. Scutellum black, thickly and 

 strongly punctured. Coriaceous portion of the elytra red, thickly 

 and coarsely punctured ; membrane black. Back of the abdomen 

 red, with the apex black; margins red, narrowly banded with 

 black. Breast black, thickly and strongly punctured, with the 

 sides of the antepectus red ; the margins of the sockets of the 

 legs and the central canal yellow. Abdomen beneath red, thickly 

 and finely punctured, with the last segment and the anal appa- 

 ratus black. Legs black ; thighs sometimes reddish at the apex ; 

 tibiae with a yellow line down the outside, sometimes reddish. 

 Rostrum pitchy brown, with the third joint pale, last joint blackish. 

 Antennae black ; second and third joints with a red ring beyond 

 the middle ; fourth joint dull red, with the base black. 



a. New Holland. Presented by Sir John Richardson, M.D. 



b. New Holland. Presented by J. G. Children, Esq. 



Genus 11. AN AS A. 



Coreus, p., Fab. Ent. Syst. iv. (1794) $ Syst. Rh. (1803). 

 Gonocerus, p., Burnt. Handb. ii. ? (1835). 



Anasa, Am. & Serv. Hem. 209 (1843) ; PI. Sch. Wanz. 238 (1850) 

 & 251 (1851). 



* Lateral angles of the thorax not prominent. 



1. ANASA dorsigera. 



Gonocerus dorsiger, Hope, Cat. 25 (1842). 



a. Jamaica. From Mr. Children's Collection. 



