76 Mr. F. Smith on some new Genera and Species 



3. Cnjptocenis placid us. 



C. oapite thoraceque nigris ; antennas, pedibus abdomineque ferrugineis ; 

 alis fusco-hyalinis. 



Male. Length 4 lines. Head black, transverse, with large shallow 

 punctures on the vertex ; the eyes large and prominent ; the scape and 

 basal joint of the flagellum black, the following joints ferruginous, and 

 gradually thickening from the basal to the apical joint. Thorax, and 

 also the coxse, black ; the mesothorax with large shallow punctures ; 

 the metathorax rugose above, truncate posteriorly, deeply emarginate 

 behind, forming teeth at the lateral angles; the legs ferruginous; the 

 wings fusco-hyaline, with the first submarginal cell clear hyaline. Ab- 

 domen ferruginous, with the nodes of the peduncle black ; each node 

 with a minute tooth at the sides. 



Hah. St. Paul (Brazil). 



4. Cryptocerus laminatus. (Plate IV. fig. 3.) 



C. niger ; antennis tibiisque subferrugineis ; capite ante et pone oculos, 

 abdominisque basi lamina pellucida instructis. 



Worker. Length 2-2\ lines. Black, and sprinkled over with silvery- 

 white glittering setae ; the sides of the head, before the eyes, broadly 

 pale testaceous yellow ; the eyes prominent, situated at the posterior 

 angles of the head, which has the margin curved behind the eyes and 

 emarginate in the middle ; the antennae pale beneath and fuscous above. 

 The thorax with five pale spines on each side, the posterior pair longest ; 

 a deep strangulation at the base of the metathorax ; the tips of the fe- 

 mora, the tibiae, and apical joints of the tarsi pale ferruginous, the tibiae 

 with a dark stain beneath. The abdomen subcordate, the margins at 

 the base pale and membranaceous ; the nodes of the peduncle trans- 

 verse ; the anterior one subquadrate, with a pale acute spine on each side 

 curved backwards towards the abdomen ; the second node somewhat 

 cup-shaped, terminating laterally in a pale acute spine, which is di- 

 rected outwards. 



Captured by Mr. H. W. Bates at Ega, Brazil. In the Collection of 

 the British Museum. 



5. Crypiocerits (jrandinosus. (Plate IV. %. 5.) 



C. ochraceus, supra squamis albis pellucidis transversis tectus ; capite an- 

 tice, thoracis lateribus, abdominisque nodis et basi glacie quasi mar- 

 ginatis. 



Worker. Length l£ line. Ochraceous ; the head subquadrate, 

 rather longer than broad ; the sides before the eyes broadly pale luteo- 

 testaceous, and the posterior margin laterally narrowly so ; the eyes 

 black, and the ilagellum rufo-testaceous. Thorax : the anterior angles 

 acute ; the sides margined with a glassy- white, subtransparent mem- 

 brane. The abdomen ovate, and emarginate at its base : the nodes of 



