1877.] MR. M. JACOBY ON NEW COLEOPTERA. 513 



entirely piceous ; four basal joints of the antennae rufous, the rest 

 black. Thorax about twice as broad as long, the sides regularly 

 rounded, the anterior angles largely developed into a point and di- 

 verging outwardly, all the sides narrowly margined ; surface very 

 minutely granulose, remotely but distinctly punctured on the disk, 

 the sides almost destitute of punctures ; a faintly visible longitudinal 

 and smooth line extends across the middle of the disk ; scutellum 

 slightly sinuate below the base at the sides, apex subacute, surface 

 impunctate, minutely granulose. Elytra much wider than the thorax, 

 scarcely narrowed behind, the apex regularly rounded, and the sides 

 with a narrow but deep margin, each elytron with about six distinct 

 striae of small punctures, the sides confusedly punctate ; the first stria, 

 near the scutellum, is very short, the space between the second and 

 third and the fourth and fifth is wider than between the rest of the 

 striae ; the interstices also very minutely punctured and granulose. 

 Underside testaceous, prosternum coarsely punctate near the sides, 

 smooth in the middle ; legs rufous, apex of tibiae and the entire tarsi 

 black. The posterior thighs with a small sharp tooth. 



Length 4 lines. 



Hah. Madagascar. 



Collection Jacoby. 



6. Rhyparida costatipennis, sp. nov. 



Oblong, semiquadrate, piceous. Head piceous, rugose-punctate, 

 epistome not separated, with the apex and the labrum of a fulvous 

 colour ; antennae entirely flavous. Thorax with the anterior margin 

 sinuate at the sides, the posterior margin rounded, and the lateral 

 ones almost parallel at the apex, slightly widened behind the middle, 

 all the angles obtuse and not produced into a distinct tooth ; surface 

 closely and coarsely punctuate, piceous. Scutellum smooth, broader 

 than long. Elytra slightly wider at the base than the thorax, pa- 

 rallel with the apex, regularly rounded. Each elytron with thirteen 

 rows of deeply impressed punctures, not diminishing in size towards 

 the apex, with the interspaces costate, the costse more raised towards 

 the apex than near the base, and more or less minutely punctured ; 

 all the costae unite at the apex in such a way that the first costa 

 near the sutural margin forms a sharp angle with the last costa, 

 and the intermediate ones in the same way with the corresponding 

 costae. The colour is a dark piceous, with a faint reflection of cu- 

 preous, the extreme lateral margin having a greenish reflection. 

 Underside dark brown or piceous as well as the legs, with tlie tarsi 

 testaceous. All the thighs armed below with an acute tooth. 



Length 2|- lines. 



Sab. Madagascar. 



In my collection. 



7. Rhyparida nigricollis, sp. nov. 



Oblong, ovate, shining, elytra rufous, thorax, head, and feet black. 

 Head obsoletely punctured on the vertex, witli a longitudinal middle 

 line, at the end of which is a shallow round fovea ; epistome sepa- 



Proc. Zool. Soc— 1877, No. XXXIII. 33 



