1908.] NATURAL SCIENCES OF PHILADELPHIA. 605 



11. Mylabris (D.) chiyakensis Wellm. spec. nov. 



Nigra, argenteo-villosa , caput et thorax obscure viridi-ccerulescentia, 

 subtiliter punctata, pallido-villosa; elytra nigra, argenteo-villosa; vittis 

 duabus (altera dorsali, altera marginali; ilia medium attingente ad 

 apicem valde dilatata, hac medium subattingente minus dilatata) macu- 

 lisque duabus {altera dorsali, altera marginali) inter medium et apicem 

 positis: corpus infra pedesque nigra (femora pallido-hirsuto , tibice flavo- 

 sericeae) pedes postici elongati. 



Long. Corp. 12 mm. 



Lat. elytr. 4 mm. 



Hah. Chiyaka, Angola (Africa) ab auctore collecta. 



Typ. in coll. mea. 



Medium sized species; head and thorax dark greenish-blue, finely 

 punctured and clothed with long pale hairs; eyes large, very convex; 

 antenna with first two joints shining, the rest dull; scutellum almost 

 semicircular; elytra black, finely punctured, clothed with pale, silvery 

 hairs; on each elytron a dorsal and marginal broad yellow line, both 

 dilated at the posterior termination, the former reaching past the 

 middle of the elytron and strongly dilated into a large transverse spot; 

 the latter not reaching to the middle of the elytron and less strongly 

 dilated. In some specimens the dorsal vitta is interrupted, the ter- 

 minal dilatation then becoming an isolated spot and the vitta remain- 

 ing shorter than the marginal one. Half way between the terminal 

 inflation of the dorsal vitta and the apex of the elytra a large, some- 

 what transverse spot; a smaller transverse spot opposte it at the mar- 

 gin. The legs and abdomen are clothed with rather long, pale hairs, 

 the tibiae being closely covered with shorter and yellower hairs. The 

 hind legs are very long. 



Type in my collection; cotype Cat. No. 12120, U. S. N. M. 



There also occurs a variety of this species which may be brief!}' 

 characterized as follows: 

 Mylabris (D.) chiyakensis var. tekama Wellm. var. nov 



Vittis dorsalibus mdlis macidisque minoribus. 



Typ. in coll. mea. 



The very striking reduction of the yellow markings gives at first 

 glance the impression of a different species. The name is a local 

 Bantu word referring to the dull color. 



Eighty-one specimens of this interesting species were taken in Feb- 

 ruary, 1908, chiefly on flowers of Compositae. In life the antennae are 

 held farther forward than in most Mylabrini, giving the insect a some- 

 what peculiar aspect. 

 39 



