306 bulletin: museum of comparative zoology. 



moving in and out of the crevices of a large block of coral on the beach. 

 Mr. Harry Hall, who brought me specimens from Simoli on South 

 Malaita, states that he found it there nesting under the same condi- 

 tions. 



Myrmicinae. 



34. SiMA (Tetraponera) humerosa Emery. 



Ann. Mus. civ. stor. nat. Genova, 1900, 40, p. 674, y . 

 Ysabei : Fulakora. 



35. Pheidole (Pheidolacanthinus) belli, sp. nov. 



Worker. Length 2.25 mm. 



Head about as long as broad, with convex sides and nearly straight occipital 

 border. Mandibles with ten small teeth. Clypeus convex; anterior border 

 broadly rounded. Antennal scapes surpassing occipital corners by about 

 one fifth their length; first funicular joint longer than the two succeeding 

 joints together; joints two to eight a little longer than broad; club slender, 

 slightly shorter than the remainder of funiculus. Eyes small, convex, situated 

 a little in front of middle of sides of head. Pronotum flattened at middle, 



Fig. 14. — Pheidole (Pheidolacanthus) belli Mann. Worker. 



armed with a pair of very long and slender spines that extend outward and 

 forward and are rather strongly cm"ved downward at tips. Base of epinotum 

 as long as declivity, flat; epinotal spines as long as those of pronotum, ex- 

 tending outward and backward and rather strongly curved downward at tips. 

 Petiole long and slender; node in profile triangular, gradually sloping into the 

 pedicle; from above, as long as broad, with the sides subconulate. Post- 

 petiole longer than broad, with slightly convex sides. Gaster long and rather 

 narrow. Legs long and slender. 



