410 Mr. C. O. Waterhouse on new Scarabseidfe. 



more dilated than in the minor form, which more approaches 

 the female. The series of G. sinuatus and G. assamensis in 

 the British-Museum Collection show this I think very dis- 

 tinctly. I believe the species of this group described by .Mr. 

 Sharp are all good species, except G. calcar and G. celebicus, 

 which, in my opinion, are major and minor forms of the same 

 species ; G. duhius, on the other hand, which has been con- 

 sidered the female of G. calcar by von Harold, appears to me 

 to be possibly distinct, or it may be merely a large female. 



Gymnopleurus Hornet. 



Oblongus, subparallelus, parum convexus, niger ; thorace fortiter 

 reticulato-foveolato ; elytris surdis, coriaeeis, striatis, interstitiis 

 maculis parvis irregularibus parum elevatis nitidis ornatis. 



Loug. 4| lin. 



Bob. N.W. India {G. Home, Esq.). 



Allied to G. JlagellatuSj F., but smaller and rather more 

 parallel. The head is of the same form, triangularly incised 

 in front, closely foveolate-punctate posteriorly. The thorax 

 is less broad, more rounded at the hind angles, marked with 

 closely placed dull fovea3, which are irregular in size, but are 

 relatively larger than in G. flagellatus, so that the interspaces 

 are generally very narrow and form a sort of shining network ; 

 each fovea has a minute shining tubercle in its centre. The 

 elytra are dull, finely coriaceous, striated as in G. flagellatus, 

 the interstices having a series of small, very irregular, slightly 

 raised, shining spots, somewhat as in Silpha rugosaj meta- 

 sternum more coarsely foveolate than in G.fiagellatus ; lateral 

 exposed margin of the abdomen not carinate. 



Gymnopleurus singular is. 



Oblongus, parum convexus, supra obscure cupreus, surdus, subtus 

 niger, nitidus : thorace subtilissime coriaceo, sat crebre subtiliter 

 punctato, lateribus medio angulatis dein paulo sinuatis, angulis 

 posticis obtusis paulo retrorsum productis ; elytris subtilissime 

 coriaeeis, striatis, interstitiis guttis miuutis nitidis crebre aspersis. 



Long. 8| liu. 



Hob. Corea {Sir E. Belcher). 



Closely allied to G. sinuatus, of a dull coppery colour 

 shaded with black, and with a silky appearance. The back 

 part of the head is dull, coriaceous, with minute asperate 

 punctures. Thorax very finely but distinctly punctured, the 

 punctures separated generally by three or four diameters of a 

 puncture, the punctures towards the sides appearing slightly 

 asperate. The sides are distinctly but obtusely angular at 



