36 ME. p. CAMERON ON THE [May 7, 



Vertex shiniug, sparsely punctured ; the punctures shallow, 

 irregular. Belo^A the anterior ocellus is a V-shaped hollow, bordered 

 with stout keels ; the sides have an oblique slope. The part of the 

 face below the antennse is roundly convex and bordered on its 

 lower edge by a keel ; the clypeus is keeled down the middle and 

 is more strongly and regularly punctured than the face, its apex is 

 alutaceous, opaque, and impunctate, its sides are roundly, but not 

 very much, dilated. Mandibles opaque, their basal half sparsely 

 punctured ; their apical tooth is bluntly rounded, the subapical is 

 indistinct and rounded. Mesonotum shining, sparsely punctured, 

 and having a blistered appearance ; its central part is bordered by 

 two shallow, wide furrows ; outside these is a narrow, deeper, and 

 more clearly defined one ; the outer edge is distinctly and sharply 

 raised and furrowed on the inner side. The scutellum is irregularly 

 punctured like the mesonotum. Median segment closely, distinctly, 

 but not very strongly, punctured ; the basal area is smooth and 

 shining, except at the edges (where it is opaque) and at the base on 

 the outer side (where it is punctured) ; the middle is furrowed ; the 

 sides are thickly covered with long white hair. Pleurae and sternum 

 rugosely punctured; under the wings, below the tegulse, is a 

 thick patch of white pubescence. Wings hyaline, the apex slightly 

 smoky ; the nervures and stigma black. Legs black, thickly 

 covered with stiff black hair. Abdomen black ; the dorsal segments 

 closely and minutely punctured ; the basal slope is covered with 

 longish, white, soft hair ; the apices of the basal four segments are 

 fringed with white hair ; the apical two are thickly covered with 

 short white pubescence and with longer white hair ; the ventral 

 scopa is bright rufous.] 



Trigona collina Sm. 



Patalung. Described by Smith from Mount Ophir, Malacca. 



Trigona testaceitaesis, sp, n. 



Nigra, capite thoraceque dense albo-pilosis ; scapo antennarum 

 apiceque tarsorum testae eis ; alls Jiyalinis, nervis stigmateque 

 piceis. ^ . 



Long, fere 4 mm. 



Hah. Patani, Malay Peninsula. 



Scape of antennse and the second joint testaceous ; the 

 flagellum dark testaceous, black on the upperside. Head smooth 

 and shining ; densely covered with short white pubescence ; the 

 edge of the clypeus is testaceous ; the labrum dark testaceous. 

 Mandibles obscure testaceous, darker in the middle. Thorax 

 densely covered with short pale pubescence, except on the median 

 segment ; on the pleurse and sternum it is denser and longer than 

 it is on the mesonotum. Legs black, the tarsi testaceous, the 

 basal joint of the hinder black ; the hair on the legs is black, paler 

 on the apical joints of the tarsi. Wings hyaline, highly iridescent ; 

 the stigma and nervures are testaceous or piceous. Abdomen 

 smooth and shining ; the basal segment may be brownish. 



Patani. Several workers. 



