54 Descriptions of New 



rather clubshapecl or subtriangular and stronger truncated 

 than in the former 2 species; 4) the ligula: this organ is of 

 subcoriaceous texture, middling size, the shape of an oblong 

 square, free and transversely truncated at the apex — these 

 characters are common to all 3 spec, and in H. ruficollis I 

 have nothing to add to it ; however, the anterior margin, which 

 is straight in this species, is slightly bisinuated in H. elegans, 

 the outer angles being acute and the central one obtuse. The 

 ligula of II. bimaculata differs from both the former in as far 

 as it is narrowed towards the apex and depressed towards the 

 sides and the front, the anterior margin is otherwise cut away 

 straight, without any sinuosities, but it is rather strongly 

 armed with bristles. The paraglossa? agree in all 3 spec, in 

 as far as they are highly developed, reach much beyond the 

 anterior margin of the ligula and are more or less bent inwards. 

 Their greatest development they assume in H. elegans, in 

 which they nearly touch each other in front of the anterior 

 margin, being cylindric and slender at the same time. In H. 

 ruficollis the paraglossse are somewhat shorter and straighter, 

 and in II. bimaculata still more so. 



On all other points the 3 spec, perfectly agree, in saying 

 which I lay particular weight upon the unusual sculpture of 

 the elytra, and the rather peculiar hairy vesture of the insects, 

 bearing also in mind their general appearance, proportions, 

 system of coloration, mode of living, etc. As to the hairy 

 vesture of certain parts of the body and the sculpture of the 

 elytra it is true that these are not generally looked upon as 

 of much importance, however, they appear to me so in this 

 instance, as they present certain unusual variations, repeated 

 in all 3 species. The hairy vesture consists in thin yellowish 

 or reddish hairs thinly geminated over the back and still more 

 thinly over the whole of the lower surface of the insects, being 

 at the same time longer at the latter place. This vesture 



