CERAMBYCIDiE. 227 



the inner edges of which are together; midway between the 

 middle and the tip there is a black spot obliquely directed up- 

 wards and edged in front with white ; tip with a long pointed 

 mucro, suture with a short mucro. Posterior femora not reach- 

 ing to the end of the elytra, at the end with two very short 

 spines. Legs with longish scattered hairs ; femora brown, base 

 and apex like the tibiae pale. 



Length 3J lines. 

 Hub. Amazon (Tapayos) (Coll. W. B. Bates). 



25. Ibidion Orpa, n. s. B.M. 



I. thoracis dorso monticuloso, antice nigerrimo, laevi, postice 

 argenteo sericeo, elytris flavescentibus, fascia subapicali ferru- 

 ginea, apice albis mucronatis, lineola media nigra, et arcu nigro 

 basali. 

 Long. lin. h\. 



Head black ; antennas yellowish, basal joint dark brown with a 

 furrow on the inside not reaching the tip, joints from the third 

 angled and grooved ; third joint broader than the rest. Thorax 

 with the back unequal, with four or five slight elevations, two of 

 them near the hind margin ; fore half of thorax deep glossy 

 black, posterior half covered with short white silvery pile ; 

 the two elevations within the white space black; the thorax 

 has a few scattered yellowish hairs ; scutellum with a short 

 silvery pile. Elytra sharply mucronated at the tip, palish 

 yellow, with a rather wide transverse subferruginous band be- 

 yond the middle, tips white ; each elytron has a blackish 

 arch, one end of which proceeds from near the shoulder, and 

 after running not far from the suture falls into the margin 

 about the middle ; a blackish oblique line crosses the elytron 

 between the arch and the ferruginous band ; elytra with sparse 

 punctures arranged in lines and each bearing an outstanding 

 rather bristly yellowish hair ; metathorax pale yellow, abdomen 

 blackish below. Legs pale, femora and tibiae somewhat darker 

 at the tip ; femora of hind legs reaching to beyond the end of 

 the elytra, with two spines at the end. 

 Hub. Amazon (Tapayos) (Coll. W. B. Bates). 



26. Ibidion Rutha, n. s. B.M. 



I. elytris plaga nigra, antice linea obliqua alba, margini parallela, 

 postice fascia transversa subarcuata alba ; plaga. subapicali fer- 

 ruginea, apice albo mucronatis. 

 Long. lin. 4-J. 



Head and antennas pale ferruginous with short greyish hairs : 



