700 KIXE XEW srECIES OF COLEOPTEnA—LIXKLL. 



species of this genus arc described from Africa, Madagascar, East 

 Indies to Pliilii)i)in(' Islands and Australia. Tlicy i)r<)bal)ly live, like 

 our species olTrox, on decaying animal substances. 



4. OXYTHYREA ALDABRENSIS, new species. 



Slender, shining, glabrous above, very sparsely setose beneath, 

 entirely black, with antenna' and palpi I'erruginous. Clypens strongly 

 margined, slightly eniarginatc, lincly punctate. Front and vertex 

 coarsely punctate, the latter with three smooth spaces, arranged 

 transversely. Thorax very narrow; sides feebly rounded, almost sub- 

 angulate at middle, strongly convergent toward apex; posterior angles 

 very obtuse, nearly rounded; base broadly rounded, with emargina- 

 tions obsolete; disk coarsely punctate, with six impressed white 

 patches: two on each side-margin, very large, nearly reaching the 

 angles, separated just in front of middle, making the posterior ones 

 twice as large as the others; two longitudinally lunulate spots in front 

 of scutellum, more widely apart than in allied continental species. In 

 one specimen there is another pair of smaller spots in front of these. 

 Scutellum glabrous, sharply acuminate. Elytra outlined as in O. mar- 

 ginalise Swarz, but the striae are not impressed, except the two nearest 

 the suture behind the middle. The intervals are nearly smooth, not 

 depressed, and the white patches are less numerous and much larger. 

 There are three pairs of small sutural spots, two larger sjiots inside 

 and behind the humeral callus, sometimes connected, and the inner one 

 sometimes connected with the median sutural, forming an oblique 

 band. The transverse marginal spot behind the middle is very large, 

 extending inward to the third stria and has a posterior elongate mar- 

 ginal spot as an appendix; apical spot large, transverse. Pygidiuni 

 nearly semicircular, with a few aunular scratches on the middle, each 

 side covered with a triangular niveous patch. Ventral surface sparsely 

 IHinctate ^^ itli a large square niveous patch on the sides of metaster- 

 nnm, an oblong one on its episternon, and another one on the side 

 margin of the coxa'. A row of transverse spots each side on the abdo- 

 men, not marginal, as in many alliett species, but at the middle of each 

 segment, sometimes absent. No trace of spine on fifth ventral seg- 

 ment. Projiortion of legs, tibial arnmture, and claws as in manjinaHn, 

 Swarz. Length, 9 mm.; width, 4, 5 mm. Four examples. 



Tiipc.—^o. 577, TT.S.N.M. 



This nice little si)ecies is allied to 0. marf/inaUs, Swarz, from South 

 Africa, but is nuich smaller, more slender, and altogether differently 

 maculate. The genus is represented by numerous forms over the whole 

 of Africa, Arabia, Syria, and l'ur()])e, extending to east Siberia. 



5. MICROTHYREA ALDABRENSIS, new species. 



Less robust, very shining, glabrous above, entirely black, with large 

 impressed niveous patches with a rosy tint, riypens as in ^f. (nnahilis, 

 Schaum, but deeply cmargiuate at apex. Front rather sparsely puuc- 



