42 Mr. F. Smith's Descriptions of new 



2. Tr'igona mellanus, 



T. nigra; antennis, mandibulis, scutello tarsisque ferniglneis, 

 alis hyalinis. 



Worker. Length 2 lines. Black ; the head and thorax 

 covered with strong confluent punctures ; the face with a fine 

 white downy pile; the mandibles, labrum and antennse ferru- 

 ginous. Thorax : the scutellum, tegulae, tips of the femora and 

 tibiae, and tlie tarsi, ferruginous; the tubercles pale testaceous ; 

 the wings hyaline, the nervures rufo-fuscous ; the scutellum with 

 two pale teeth at its apex, and two pale minute spots at its 

 base. Abdomen : smooth and shining ; the apical margin of the 

 second segment and the third and following segments more ob- 

 scurely ferruginous ; the apical segments covered with fine, short, 

 pale golden pubescence; beneath obscure rufo-testaceous ; the 

 coxae pale testaceous. 



" A very large tree having fallen, it was cut in two to remove 

 it ; the inside was found to be quite hollow for many feet ; the 

 space thus left empty was completely lined with the nest of this 

 small bee." 



3, .Tiigona laboriosa. 



T. nigra ; capite laevi et nitido, antice pube argenteo vestito ; 

 thorace nitido, alis hyalinis;, abdomine pallide rufo. 



Worker. Length 2| lines. Head, thorax and legs black; the 

 head very smooth and shining, the face and cheeks covered with 

 a fine silvery pile ; the antenna rufo-testaceous beneath ; the 

 apex of the clyjieus, the labrum and mandibles, more or less 

 obscurely ferruginous ; the vertex with some erect short black 

 hairs. Thorax : smooth and shining, the disk with erect black 

 hairs; the scutellum obscure rufo-testaceous; the metathorax 

 smooth, shining, and rufo-piceous in the middle, the sides covered 

 with cinereous pile; the wings hyaline, the nervures are rufo- 

 fuscous at th&base, and pale testaceous towards the apex of the 

 wings, the stigma pale ; the legs dark rufo-piceous, the tibiae and 

 tarsi densely covered with black pubescence ; the legs are paler 

 towards their base beneath, and the claw-joint of the tarsi also 

 pale testaceous. Abdomen pale ferruginous, the base pale tes- 

 taceous. 



Genus Smiera, Spin. 

 Sniiera captiva. 

 S. flava, nigro-maculata, alis hyalinis, antennis fuscis. 

 Female. Length 3 lines. Yellow ; the flagellum rufo-fuscous ; 



