402 (26) Mr. G. R. Crotch's Revision of 



Thallis rubicunda. 



Triplax rubicunda, Lac. Erot. 207. 



Madagascar. 



Abdomen with the coxal line distinct ; mesosternum depressed ; 

 presternum with the coxal jirocess rather narrow, parallel, mar- 

 gined ; eyes somewhat coarsely granulated ; legs long. 



Thallis (?) humeralis, sp. n. 



Elongata, nigra, elytris nigrocyaneis macula humerali rufa, 

 pedibus rufo-piceis ; capite piano, parce fortius punctato ; thorace 

 transverso - quadrato, obsolete punctato, basi marginato, fovea 

 utriuque punctis majoribus impressis, serieque utrinqiie in disco 

 punctorum majorum ; scutello Isevi; elytris punctulatis, obsolete 

 seriatim punctatis ; abdomine subtiliter punctulato, linea coxali 

 distincta ; metasterno vix punctulato, canaliculato, linea coxali 

 nulla ; mesostei'no oblongo, Isevi, marginato, postice subacumi- 

 nato ; prosterno profunde parce punctato, processu oblongo, late- 

 ribus marginatis, postice tr-vincatis ; capite subtus impresso, punc- 

 tulato, mentum trapezoidali, antennae brevibus, articulo tertio 

 quarto sequali. 11° maximo. L. 2h lin. 



Waigiou (Wallace). 



Difiei's from typical Thallis by the smooth underside, and the 

 oblong mesosternum. 



Tliallis (?) mycetocliaroides, sp. n. 



Subelongata, nigra, nitida, elytiis singulo punctis 2 aurantia- 

 cis (1 humerali, 1 fere ad apicem), ore, pedibus corporeque snbtus 

 rufo-piceis ; capite parce punctato, clypeo emarginato ; thorace 

 ti'ansverso, pai'ce punctato, lateribus rotnndatis, an;4ulis anticis 

 deflexis, incrassatis, basi tenue marginato, ante scutellum rotun- 

 dato-producto; scutello subtransverso Irevi; elytris basi vix margi- 

 natis, laevibus, obsoletius striato-jninctatis ; abdomine subtus tenu- 

 issime pubescente, vix punctulata, linea coxali nulla, processu 

 ventrali rotundato acuminato; metasterno subtilissime punctulato, 

 antice leviter foveolato; mesosterno quadrato, laevi^ marginato; 

 prosterno vage profunde punctato, processu marginato, postice 

 emarginato; capite subtus transversim impresso, lateribus puncta- 

 tis, antennis brevioribus, articulo 3" subelongato. L. 2| lin. 



Batchian (Wallace). Allied to Th. humeralis. 



Thallisella. 



g. n. {fii];>. peruviana, Crotch). 



Antennfe as long as the head and thorax, clothed with long 

 hairs, 3rd joint longer than the 4tli, club 3-jointed, loose, last 

 joint acuminate. Head small, subtriangular, eyes very convex, 



