276 MR. E. SHELFORD ON MIMETIC INSECTS AND [NoV. 4, 



one-fifth fi'om the apex. Prosternum rather strongly tnberculate 

 between the coxae ; the mesosternvim with a smaller tubercle on 

 its hinder half. 



This is the only species of the genus known to me in which the 

 sternal processes are distinctly tuberculate. 



Erythrus biapicatus, sp. n. (Plate XXIII. fig. 19, $ .) 



Niger, proihorads disco et elytrorum hasi ru/is, nigi'O-vittatis : 

 protkorace ruguloso-punctato, sine tuberculis distinctis ; 

 elytris dense granulatis, postice divaricatis, utrisq-ue in spi7Uini 

 ■parvam teroninantibus. 



Long. 15g ; lat. 3^ mm. 



Hah. Kuching, Mt. Matang, 3600 ft., June 1900. One female 

 example. 



Black, with the disk of the prothorax and the basal third of 

 the elytra partly red, the red of the prothorax being interrupted 

 by two black bands extending from the front margin, and by a 

 small median spot near the base, while the red on the base of the 

 elytra is divided by a narrow band along the suture, and two 

 wider bands on each side extending forwards and gradually 

 narrowing from the posterior black area. Prothorax rugulose 

 punctate, and showing traces only of the tubercles present in most 

 of the other species. Elytra very densely granulate, the gi'anules 

 bearing veiy minute black setse, v/hich are scarcely evident except 

 on the rufous areas near the base. Metastei'num somewhat 

 similarly granulate to the elytra, and the abdomen much more 

 finely so. Antennte of the female about half the length of the 

 body, with the joints from the fifth to the tenth rather broad, and 

 angulate at the apex on the anterior side. 



The divergence of the elyti'a fi-om the suture behind and the 

 granulation of their surface serve to distinguish this species from 

 all those hitherto described belonging to the genus. 



Erythrus yiridipennis, sp. n. (Plate XXIII. fig. 58.) 



Niger, protkorace iota rvfo, elyii^is viridescentihus atit viridi- 

 cyaneis et opacis ; aniennis ( c5 ) quam corpore paidlo brevi- 

 oribus, ( $ ) medium elytrorum vix super antihus, articuUs 

 5" ad !()"■"'' modice dilaiatis ad apicem deniaiis ; protkorace 

 obsolete punctato, supra leviier quadri-iwdoso ; elytris cre- 

 beri'ime ruguloso-jntnctatis, apice subsinuatis ad suturam 

 breviter spinosis. 

 Long. 12-16 ; lat. 2|-3 vim. 



Hab. Mount Matang, near Kuching in Saiawak (3600 ft. alt.), 

 Jvine 1900. Five examples; in the British Museum and Hope 

 Collection, Oxford. 



Prothorax red above and below, elytra of a dull green or bluish- 

 green colour, all the rest of the body together with the legs and 

 antennae being black. Prothorax indistinctly punctured, fur- 

 nished with four feeble nodules on the disk, two being near the 

 middle and two, more widely sepaiated from each other, near 



