MANN: ANTS OF THE BRITISH SOLOMON ISLANDS. 337 



Santa Cruz: Graciosa Bay (T^^pe-locality). Three Sisters: Mala- 

 paina. Ugi: Pawa. San Cristoval: Wainoni Bay, Wai-ai. Ysabel: 

 Fulakora. 



Occurs in small colonies beneath stones. 31. mandibularis Vieh- 

 meyer from New Guinea is very close to modcsta, but has on the inner 

 edge of the mandibles a broad widening, which Viehmeyer compares 

 with that of Acropyga hiddli Forel. In moclcda the posterior corners 

 of the blades are produced and rounded continuously with the inner 

 border, resembling the structure of the mandible of Acropyga termi- 

 fobia, rather than of butclli, as figured by Forel. Type. — M. C. Z. 

 9,186. 



65a. Myrmecina modesta Mann, subsp. subarmata, subsp. nov. 



Worker. Length 2.50-2.75 mm. 



Differing from the preceding in having the epinotal spines much reduced in 

 size, being less than half as long as the epinotal declivity, triangular in shape 

 and not acute at apex. 



Malaita: Auki. 



T^jpe.— M.C.Z. 9,187. 



Key to the Papuasian Species. 



Body without strong sculpture; epinotal spines long and acute. (New 



Guinea) polita Emery. 



At least the thorax coarsely sculptured 1. 



1. Gaster opaque, subtly rugosely striate longitudinally. Length 3.5 mm. 



(New Guinea) ^ opaciventris Emery. 



Gaster shining. Length 2-3 mm 2. 



2. Antennal scapes not attaining occipital corners; anterior border of clypeus 



unarmed. (New Guinea) brevicornis Emery. 



Antennal scapes attaining or surpassing occipital corners; clypeus den- 

 tate 3. 



3. Pronotum arcuately transversely striate; clypeus obscurely 4-dentate 



(New Guinea) transversa Emery. 



Pronotum longitudinally striate or punctate 4. 



4. Ferruginous; head and promesonotum with pihgerous punctures; clypeus 



3-dentate. (New Guinea) punctata Emery. 



Black; head and promesonotum coarsely striate; clypeus 2-dentate. . .5. 



