Mr. C. O. Waterhouse on Madagascar Cetoniidaj. 83 



Goptomia crassa. 



Castanea, crassa, sat nitida ; capitis vertico, thorace maculis duabus 

 magnis triangularibus, scutello utrinque, pectore abdomineque 

 nigris ; elytris puuctatis, costis duabus parurn elevatis. <$ $ . 



Long. 9^-10-i lin. 



Very robust, especially the female. Castaneous, the elytra 

 darker than the rest of the body. Thorax convex, regularly 

 narrowed anteriorly, finely coriaceous, thickly punctured, 

 rather more strongly in the female than in the male, with 

 two small olive-black spots at the anterior margin (close 

 together), and two large triangular patches behind, united at 

 the posterior margin. Seutellum coriaceous and finely punc- 

 tured, black, with a mesial brown line. Elytra each with 

 two slightly raised lines, the suture blackish. Pygidium 

 transversely densely strigose, more strongly and closely so in 

 the female than in the male. Anterior tibite tridentate. 



The male has the elytra with five or six lines of rather 

 strong punctures, the lateral margins and the apex densely 

 rugulose. 



The female has the elytra more or less strongly punctured 

 all over, except the two costas ; the sides and apex rugulose 

 as in the male. 



Antananarivo and Fianarantsoa. 



Valgus albolineatus. 



Niger, supra depressus, longitudinaliter aciculatus ; thoracis angulis 

 posticis, singulorum elytrorum striga obliqua, corporeque subtus 

 albo-squamosis ; pygidio piceo. 



Long. 2| lin. 



Thorax elongate, gently narrowed in front of the middle, 

 behind the middle moderately narrowed and gently sinuate, 

 with a fine mesial carina above ; the surface covered with 

 large, closely placed, ovate punctures, which have a tendency 

 to form lines ; on each side at the margin there is a large 

 deep fovea ; and the base is impressed on each side ; the 

 margins anteriorly are finely crenulate. Elytra a little longer 

 than broad, rather concave on the back, the sides somewhat 

 raised before the deflexed portion ; the surface densely longi- 

 tudinally scratched ; each elytron has an oblique dirty white 

 stripe about the middle. The propygidium and the whole of 

 the underside of the body are clothed with white scales ; the 

 fourth abdominal segment has above, on each margin, a small 

 acute tooth. The pygidium is pitchy, shining, densely punc- 

 tured, impressed in the middle at the apex. 



6* 



