256 Mr. H. W. Bates o;^ the 
R. gigas, n. sp. 
R. Zeelandlcus, Redtenbacher, Keise d. Novara, p. 10, 
t. l,f. 5? 
R. opaco affinls, at multo major. Elongatus, parum 
convcxus, niger, subopacus; thorace subquadrato, antice 
et postice fere requaliter angustato, fovea utrinque basali 
sulciformi, angulis posticis obtusis ; elytris oblongo-ovatis, 
marginibus explanatis, fortiter striatis, interstitiis parum 
convexis baud punctatis, stria abbreviata juxta-scutellari 
profunda. 
Long. 9—12 lin. $ $. 
Nagasaki ; Cbusan and Yang-tsze-Kiang, China ; I. 
Formosa. 
I have little doubt this not uncommon Chinese insect is 
the one described and figured by lledtenbacher, with the 
erroneous locality, Auckland, New Zealand, appended to 
it. The beautiful figure agrees in every respect, except 
the prominent hind angles, which character is, however, 
contradicted by the description "die winkel stumpf." The 
only discrepancy in tlie description is the heart-shaped 
labrum, this organ being deeply sinuated, although much 
less bilobed than in the other species. The species differs 
from its allies in its longer thorax, Avidest near the middle, 
and narrowed quite as much in front as behind. The eyes 
are not so prominent as in other species, and the edge of 
the epistome is deeply sinuated. The legs and underside 
of the body are glossy black, while the upper surface is 
rendered sericeous-opake by the minute rugosity of the 
integument. In rare cases the elytral stria) are finely 
punctulate. 
If the species be really found in New Zealand, Redten- 
bacher's name will stand ; but, if not, I presume it will be 
inadmissible. 
R. elongatus, n. sp. 
Elongato-oblongus, convexus, niger, nitidus ; thorace 
quadrate, antice angustato, postice paululum sinuato-an- 
gustato, angulis posticis valde obtusis ; elytris fortiter 
striatis, interstitiis convexis impunctatis, stria abbreviata 
juxta-scutellari profunda. 
Long. 12 lin. $. 
lliogo ; one example. Also at Kiu-Kiang, on the 
Yang-tsze, in China. 
Differs from tlie ordinary form of the genus in being 
parallel-sided and very convex. The head is not depressed 
