Mr. C. O. Waterbouse on neio Cohoptera. 261 



Allied to II. Boioringii and of nearly the same form, but 

 with the elytra sculptured as in Lucanus cervus, excejDt that 

 the suture is smooth and shining. Head very broad, a little 

 broader than long, flatter than in H. Boioringii, very closely 

 and moderately coarsely granular, much wider in front of the 

 eyes than behind, where there is a slight swelling. Mandibles 

 very obscurely granulose-punctate, much less deflexed than in 

 most species of this genus, very straight, curving in at the 

 apex, somewhat flat on their upper surface, vertical and flat 

 on the outside. There is a strong tooth close to the base 

 (obliquely truncate at its apex in the larger example), a small 

 obtuse tooth at the iniddle, a larger one near the apex, and a 

 very small one close to the apex. The clypeus is deflexed, 

 angularly produced in the middle, with a short, truncate, re- 

 flexed lobe on each side, which gives the clypeus (when 

 viewed from above) the appearance of being deeply emargi- 

 nate. Thorax as in H. Boionngii, but not quite so short, 

 very slightly narrowed in front, densely granular, the granu- 

 lation less distinct and the surface more shining on the disk. 

 Scutellum densely and finely punctured. Prosternal process 

 narrow and obtusely keeled, not broad and flat, as in //. 

 Bowringii. 



Hah. Animallai, Koimbatur (TF. Davison, Esq.). Brit. 

 Mus. 



CetoniidaB. 

 Genyodonta Jaclcsoni, n. sp. 



General form and colour of G. flavomaculata. Brownish 

 yellow, the elytra with a yellow patch on each, as in flavo- 

 maculata, not extending to the apex. Thorax with four 

 black spots. Scutellum with two black spots. Each elytron 

 has a distinct black spot at the base close to the scutellum. 

 There is a black spot on the mesothoracic epimera, another on 

 the metathoracic epimera, usually four spots on the meta- 

 sternum, and one on the underside of the posterior femora. 



^ . Head as in G. flavomaculata, but with the ridge at the 

 base of the antenna3 more elevated, more compressed, with its 

 angle obtusely rounded, not nearly so porrect as in G. quad- 

 ricornis. Length 11^ lines. 



Hah. Massai, S.E. Africa. Brit. Mus. 



This species may at once be distinguished from its allies 

 by the black spot at the base of the elytra, which are more- 

 over much smoother than in G. flavomaculata. 



Mr. Jackson met with this species in considerable numbers, 

 and there is very little variation among the specimens. 



