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bulletin: museum of comparative zoology. 



Finely pilose throughout; antennae densely covered with short stiff re- 

 cumbent hairs. 



Color black. Wings faintly infuscated; veins and stigma brown. 



Three Sisters : Malapaina (Type-locality). San Cristoval : Wai-ai. 

 Ugi: Pawa. Malaita: Auki. Florida: Tulagi. Ysabel: Fulakora. 

 Type.—M. C. Z. 9,158. 



30b. Anochetus cato Forel, isolatus, subsp. nov. 



Worker. Length 6.5 mm. 



Differing from A . cato Forel in the following characters : — the petiolar 

 node in profile is thicker, more conical and blunter at apex; the anterior sur- 

 face is evenly convex and not constricted before the apex as in cato. 



The striation on the front of head is feebler and sparser and extends barely 

 past the ends of the frontal carinae and is included between them. 



The head, thorax, and epinotum are black, the gaster, legs, mandibles, and 

 antennae, brownish red. 



Fig. 11. — Anochetus cat© isolatus Mann. Worker. Lateral view of thorax and petiole. 



Male. Length 5 mm. 



In addition to its much larger size, differing from the male of cato in the 

 structure of the petiolar node, which in profile is nearly as broad as long and 

 much less narrowed above. 



The wings are less infuscated than in cato. 



Santa Cruz: Graciosa Bay (Type- locality). Three Sisters: 

 Malapaina. 



Several small colonies were found in the first named locality and 

 solitary workers in the last. Type. — M. C. Z. 9,159. 



