296 Proceedings of the Royal Society of Victoria. 



Hemelytra apicem abdominis nonnihil superantia. Pedes piceo- 

 nigi'i. Long. ° 5*5 mm. 



West Australia. 



This is one of the most interesting insects that Mr. French has 

 sent me. Of this genus a single species was known, C. apicicornis, 

 Sign., with a vast geographical distribution, having been found 

 in tropical America and Asia, and in the Mascarene and 

 Seychelle Islands. From that species C. rufangula is easily 

 distinguished by the very difierent colour-markings, and by 

 having the head less elongated with the postocular part rounded 

 on the sides and the ocelli contiguous to the eyes. 



Sub-fam. HETEROGASTRIN^. 



Triseais, n. gen. 



Caput cum oculis apice pronoti latins, nonnihil exsertum, 

 subjvque longum ac latum, parte anteoculari longitudine fere 

 duplo latiore, lateribus postocularibus parallelis, ocellis a basi 

 capitis nonnihil remotis, inter se quam ab oculis plus quam duplo 

 longius distantibus, tuberculis antenniferis valde declivibus, 

 articulo primo antennarum paullo plus quam dimidio apicem 

 capitis superaute, secundo primo paullo plus quam dimidio 

 longiore, tertio secundo paullo breviore, quarto tertio longitu- 

 dine subsequali, bucculis brevissimis, rostro coxas medias attin- 

 gente, articulo primo medium oculorum attingente, secundo primo 

 longiore, apicem prosterni superante. Pronotum transversum, 

 capite nonnihil longius, antrorsum fortiter angustatum, prope 

 apicem fortius subrotundato - angustatum, annulo coUari dis- 

 tincto instructum, basi late leviter sinuatum, paullo ante medium 

 transversim, impressum, impressione latera baud attingente, 

 uiarginibus lateralibus obtusis, convexis, lobo antico sat convexo. 

 iScutellum subtequilaterum, dimidio apicali calloso, callo antice 

 angulariter sinuato. Hemelyti-a apicem abdominis longius super- 

 antia, clavo vix punctato, sed lineis triljus impressis subtiliter 

 punctulatis instructo, lineis duabus exterioribus ad suturam clavi 

 appioxiiiiatis, interstitio angusto convexo separatis, linea interna 

 secundum marginem scutellarem et connuissuram currente, a 

 linea media intervallo lato piano disjuncta, commissura scutello 

 longitudine subivquali, eorio ad venas subtiliter punctato-striato, 



