DICEROS. 73 



px'ojecting forwai'd over the excavation from between the eyes. 

 The pronotum is very lightly punctured in the middle and more 

 closely and coarsely at tlie sides. It is strongly transverse, with 

 the sides rounded and not augulated, bordered by an impressed 

 raargiual line which is discontinued at about the posterior \ ot" 

 its length, and the mesosternal epimera are almost covered by the 

 produced hind angles. The scatelJum is shortly triangular and 

 moderately sharp at the apex. The e^j/tra have rather feeble rows 

 ot" irregular punctures and are feebly sinuated at the sides and 

 acute at the apical angles. The pygidlam is very coarsely punc- 

 tured. The sternal process is very slender, acute, and strongly 

 curved. There are large but scattered punctures ou the meta- 

 sternum aud legs, and all the punctures, both above and beneath, 

 are black-pigment(>d. The legs are moderately stout and the front 

 tibiae rather broad. 



S . The clypeus is nearly straight in front and a pair of long 

 and slender horns spring from its sides just in front of the eyes. 

 They are flattened and nearly parallel, except at the tips, where 

 they are a little incui-ved and bluntly i-ouuded. The prothorax is 

 narrowed in front, and the elytra are more spinose behind than 

 in the female. The club of the antenna is a little longer. The 

 front tibiae are quite simple, aud the abdomen is channelled along 

 the middle beneath. 



$ . Two short angular processes spring from the front margin 

 of the clypeus. The front tibia) are bluntly bidentate, and all the 

 tarsi are rather shorter than in the male. 



Length 19-21 mm.; breadth 10 mm. 



Bengal (?); Penang. 



'Type in the Paris Museum, diardl having been described from 

 the same specimen ; type of miirata in the British Museum. 



This beautiful beetle, although discovered so long ago as 1815, 

 is extremely rare, and has been the subject of much discussion. 

 Only a single specimen of the c? (the original specimen in the 

 Paris Museum) is yet known. I have been able to make a careful 

 comparison of this with the two female specimens from Penang in 

 the British Museum to which the name Heterorrhina miirata was 

 given by Wallace, and find that they agree so exactly in all points 

 but the armature, that 1 have associated them as a single species 

 almost without hesitation. I am not convinced, though, that the 

 male was actually brought, as supposed, from Bengal, and M. Lesne, 

 of the Paris Museum, tells me that MM. Diard and Duvaucel, its 

 discoverers, did not collect only within the Indian borders and 

 that the localities in which their specimens were found were not 

 recorded with any precision. It is possible therefore that this 

 species may not really belong to the Indian fauna. It is 

 also possible that it may be found in Lower Burma but not in 

 Bengal. 



Dr. Ivraatz discussed this species at length (Deutsche Ent. 

 Zeitschr. 1892, p. 370), and concluded that the male type-specimen 



