APPENDIX— COLEOPTERA . 



53 



described s})ecies. It is allied tn A. ruhri'p<-'niiit< and A. BoiipJanili, but its 

 elytra are very mucli more rut;(isely ]miR-tate than in either of tliose species. 

 It is also smaller. It appears to be very variable, the si)ecimens pieviously 

 sent from Ecuador have a complete but irre- 

 gular annulus near the apex of the elytra, 

 enclosing a somewhat triangular lilack spot. 

 In tliose collected Ijy Mr. Wliym]ier the spots 

 are nnt of a. blood-red colour liut of an orange 

 yellow shade, and the annulus is seen to con- 

 sist of three spots often disc(.>nnected, while in 

 several all the spots vanish with the exception 

 of the liasal one. 



Mr. Whymper, however, informs me that 

 when the insect is alive the spots are more 

 distinctly red than they are now, the colouring 

 liaving undergone alteration since the speci- 

 mens have l)een in spirit ; and he says that he 



" (lid not notice any other beetle in the interior of Ecuador wliicli was so 

 widely distributed, and in such large nuud_>ers. It was found almost every- 

 where, between 8-11,000 feet, u]ion trees, Inishes, and plants, and was con- 

 sjiicuously niuner(nis." 



Afitijlnif is a genus highly characteristic of the South American tropical 

 fauna. They are hairy insects, repi'esentative of the Old World P)asijf('.% and 

 having similar habits, sitting on plants and in flowers in the hot sunshine. 

 About twenty species are now desciiljed. 



ASTYLUS BIS-SEXGUTTATUS, CORIIA.M. 

 9000-13,500 FEET. 



17. Listriix cenescens, n. sp. 



Hah. The Paneeillo, Quito (10,000 feet). A single example. 



Niger, punctatus, elytris suba^neis, antennis rufis, articulis quatuor apical - 

 ibus nigris, pedibus ol>scure rufis, femoribus piceis, capite crebre et distincte, 

 prothorace parcius punctatis, hoc alutaceo, illo inter antennas bifoveolato ; 

 elytris crebre punctatis. Long. 3^ millim. 



Head with the eyes moderately j^i'ominent ; antennte longer than the 

 head and thorax, basal joint red, spotted with black above, the three or 

 four apical joints scarcely form a club, Init are wider and Idack ; thorax not 

 wider than longer, but a little narrowed in fiont, margined by a fine line on 

 the sides and base, and very indistinctly so in front. There is a faint shallow 

 depression on the disk near the base, otherwise it is even, with distinct 

 punctures. Elytra rather more shining than the thorax, closely and snbcon- 

 fluently punctate. 



