334 THE ENTOMOLOGIST. 



some localities they appear in large numbers, running on the 

 ground and on the trees, in the middle of November. I never 

 saw any nest. 



21. P. Hookeri, Lowne. — Worker 3 lines long; head and 

 thorax metallic-green, finely shagreened ; abdomen black, 

 and legs rufo-piceous. Head as broad as the thorax. Face 

 strongly carinated. Carina overhanging the insertion of the 

 antennae considerably. Scape of the antennae rufo-piceous. 

 Flagellura black, with raoniliform joints. Thorax rounded 

 above and flattened laterally, narrowed behind ; margins 

 acute, slightly recurved. Prothorax vritli a small spine at 

 each anterior angle. Metathorax prolonged in two long 

 spines posteriorly. Scale of the peduncle furnished with two 

 curved spines, longer than those of the metathorax. Abdo- 

 men globose. 



As in the other species, I never found any nest. I only 

 found the workers running on the ground. 



b. ]\Iaxillary palpi abbreviated. 



22. P. foveolatiis, Lowne. — Worker : length 4 lines. 

 Black. Head, thorax, and scale of the peduncle pitted with 

 large hexagonal pits. Abdomen clothed with a dense golden 

 pubescence. Legs rufo-testaceous, occasionally piceous. 

 Head narrowed anteriorly. Face with two elevated carinas. 

 Thorax elongate, rounded anteriorly. Metathorax terminated 

 posteriorly with two acute slightly curved spines. Scale of the 

 peduncle incrassate, unarmed. Abdomen flattened and cor- 

 date. 



Under stones and on the trunks of trees, abundant. 1 think 

 their habits are similar to those of P. Ammon. 



Genus Ponera. 



23. Ponera metallica, Sm. — A very common species : it 

 excavates decaying stumps. 



Genus Myrmica. 



24. Myrmica longiceps^ Sm. — These ants inhabit sandy 

 places, and construct their nest under ground, throwing up 

 little heaps of sand about six inches in diameter and two or 

 three inches high, with a funnel-shaped opening to the nest 

 in the centre of each, often nearly an inch in diameter : a 

 nuH)ber of the insects are usually lurking in the opening, but 

 they retreat into the interior at the slightest cause for alarm. 



