from the Oriental Zoological Region. 61 



third and fourth joints are nearly equal in length. Head 

 below the ocelli thickly covered with longish white pubes- 

 cence, the vertex more sparsely with shorter pubescence 

 intermixed with long fuscous hair. Clypeus smooth and 

 shining, depressed, the sides slightly, the apex more distinctly 

 raised ; the front and vertex strongly punctured, smooth at 

 the sides of the ocelli, which are distinctly raised. Man- 

 dibles at the base thickly covered with white intermixed 

 with fulvous hair; the palpi black. Pronotum strongly 

 punctured, thickly covered with silvery pubescence ; the 

 sides of the pleurse with stout widely separated keels. Meso- 

 notum deeply rugosely punctured, the punctures running 

 into reticulations and much larger and deeper towards the 

 apex ; the hair is long and black. Scutellura strongly 

 rugosely punctured except in the middle on the extreme apex 

 above, this portion having a shallow furrow in the middle ; 

 the hair on the base is black, on the apex longer and paler ; 

 the postscutellum is smooth in the middle, the sides punc- 

 tured. The base of the median segment is thickly covered 

 with depressed silvery pubescence, which completely hides 

 the texture ; the apex is closely reticulated and covered with 

 long fuscous hair. The middle of the mesopleurai is spai'sely 

 and shallowly punctured and thickly covered with white 

 pubescence ; the metapleur^ reticulated except at the base 

 above and in the middle. Mesosternum rugosely punctured 

 except in the middle. Legs thickly covered with long white 

 hairs, the spurs pale. Wings fuscous violaceous; the basal 

 abscissa of the radius is straight, oblique; the apical is 

 roundly curved above the middle ; the tirst transverse cubital 

 nervure is oblique, with only a slight curve. Basal segment 

 of the abdomen black except at the apex, and is covered with 

 long white hair ; the ventral keel at the apex projects into a 

 short somewhat triangular tooth ; the second to sixth segments 

 are covered with fulvous hair ; the last segment is entirely 

 black and thickly covered with long black hairs ; the middle 

 is smooth and shining ; the last ventral segment has on either 

 side a distinct smooth conical tooth, followed by a much 

 larger one, which is curved above and obliquely narrowed on 

 the lower side. 



This species agrees in form, pubescence, and coloration 

 with the male of M. sexmaculata^ iSwed., but is quite distinct. 

 The two species may be separated as follows : — 



Scutellum in the middle above broadly smooth and 

 shining throughout ; the median segment not 

 thickly covered with white pubescence ; the sides 

 of the apical two ventral segments marked with 

 stout oblique keels sexmaculata. 



