492 Mr, Ct, J. Arrow's Notes on Endomychid Coleoptera 



seven, the yellow terminal joint three times as long as it 

 is Avide. 



Chondria apicalis, sp, n. 

 Testacea, fulvo-pubescens, pionoto medio jsaulo infuscato, 

 antennis nigris, articulis basalibus 4 vel 5 rnfescentibus ultimoqiie 

 pallide flavo ; pedibus antennisque modice longis, pronoto brevi, 

 Bubtiliter punctato, lateribus fortiter arcuatis, marginibus latis- 

 eimis, basi fortiter sat anguste marginato, utrinque profunde fossu- 

 lato, foveis basalibus valde obiiqnis, antice leviter productis, scu- 

 tello lato, triangulari ; elytris seriato-punctatis, interstitiis sat crebre 

 punctulatis; antennarum articulis 2-8 brevibus, compactis, 9-11 

 laxissime connexis, paulo dilatatis, 9 et 10 transvcrsis, 11 ad eos 

 conjunctos longitudine aequali. 

 ■ Long. 4 mm. ; lat. 3 mm. 



Philippine Is., Mindanao : Butuan {C. F. Baker). 



Like all its eight congeners, this is known from a single 

 specimen only. This has been kindly presented to the 

 British Museum by Prof. Baker. It resembles C. ovalis 

 Arrow, but is rather larger, with longer antennae, the 

 interstices of the elytra more finely punctured and the large 

 serial punctures more distinct. The elevated margins of 

 the pronotum are wider, the basal groove more deeply 

 impressed and less close to the edge. The deep pits pass- 

 ing under the raised margins at each end of the base form 

 a remarkable feature, but they are a little less conspicuous 

 than in C. longicornis. 



The two Philippine species are peculiar for the pale 

 terminal joint of the antenna. This is an interesting 

 characteristic of the Endomychidae of several genera in 

 the island of Mindanao. Gorham has described two species 

 of Stenotarsus in which this curious feature occurs, viz. 

 S. tabidus and leonmus. In the latter the last two joints are 

 said to be pale, but in fully mature specimens the terminal 

 one only seems to retain its yellow colour. I have here 

 described a third Philippine Stenotarsus with the same 

 characteristic, and it appears again in Milichius ampliatus, 

 an Endomychid superficially like but not very nearly re- 

 lated to Stenotarsus and Chondria. It is evidently a case 

 of a mimetic association, and the bright-tipped antenna 

 may be assumed to be a warning mark. 



Stenotarsus tabidus and leoninus, of Gorham, just re- 

 ferred to, are described as uniformly coloured, with the 

 exception of the antennae, but a black-sjiotted form of each 



