Sound-production in the Lamellicorn Beetles. 743 



species of the genus as yet described, and nearly related 

 to it is an insect from Java in the British Museum to 

 which I propose to give the name 



0. macnlipennis, sp. n. 



Plate XXXVI, fig. 3. 



Brevis, rufo-fulvvis, corpore supra iibique granuloso-rugosus et 

 dense fulvo-setosus, prothoracis margiiiibus antico et postico, scutello 

 elytrisqne nigris, utroque elytro fascia transversa irregulare anteriore 

 maculaque discoidale apicale ornato : capite magno lato, clypeo 

 parvo, carina arcuata tnberculisque duobus lateralibus paulo elevatis ; 

 prothorace valde transverse, quam elytra ad humeros multo latiore, 

 antice profunde emarginato, angulis anticis acutis, posticis obsoletis, 

 margins postico late lobato, sulco longitudinale antice abbreviate 

 carinaque tenue transversa sinnata postice prasdito ; scutello magno, 

 longitudine plus quam elytrorum partem quartam, apice acuminato ; 

 elytris brevibus, distincte punctato-striatis, interstitiis subtiliter 

 rugosis ; corpore subtus pedibusque testaceis, longe liirsutis, tibiis 

 anticis dente minuto tertio exacte inter secundum atque basin medio 

 posito, tarsis gracilibus, pedum posticum articulo primo ad reliquos 

 conjunctim sequale ; antennarum clava * maxima cordiforme. 



Long. 10'5 mm. 



Hah. Java. 



This is about equal in size to the Japanese species 

 referred to, but whereas that is black, with the femora 

 and dorsal markings red, the new species is red with the 

 exception of the scutellum and the greater part of the 

 elytra. 0. grandiceps, Fairm., from China, is another 

 allied form similarly coloured to 0. mciculipennis, but it is 

 smaller, and like 0. maculatus bears a pair of tubercles at 

 the front of the clypeus which are absent in the new 

 species. The large sharply-pointed scutellum is another 

 distinctive structural feature. The dorsal stridulating 

 appendage has the form of a horizontal plate attached 

 by a broad base to the abdominal segment and having at 

 its inner end several highly chitinized ribs which terminate 

 in short finger-like processes. 



The single male specimen described was formerly 

 contained in the Bo wring Collection. 



The following species is more of the normal form and 

 size, but is notable for its very long and thick tawny 

 clothing and the pattern of chestnut and black with which 

 it is decorated. 



* This has been represented much too small in the figure. 



