322 bulletin: museum of comparative zoology. 



with fuscous veins and stigma. The color is ferruginous with a spot on vertex 

 and the posterior portions of gastric segments fuscous. 



San Cristoval: Pamua, Wainoni Bay. 



This species is dedicated to Rev. C. R. Fox, missionary to and stu- 

 dent of the natives on San Cristoval. Type. — M. C. Z. 9,166. 



50. Crematogaster nesiotis, sp. nov. 



Worker. Length 2.50 mm. 



Head with convex sides and shallowly concave occipital border; in the 

 larger workers broader than long. Mandibles 4-dentate. Clypeus convex, 

 very shallowly concave at middle of anterior border. Antennae 11-jointed; 

 scapes not attaining occipital border; funicular joints all longer than broad; 



Fig. 24. — Crematogaster nesiotis Mann. Worker. Lateral view of thorax and petiole. 



club distinctly .3-jointed, terminal joint about as long as the two preceding 

 joints together. Thorax robust; promesonotal suture more fully impressed; 

 pronotum very indefinitely margined at sides, humeri rounded. Mesonotum 

 in profile convex ; submargined at sides. Flat basal portion of epinotum rather 

 long, only twice as broad as long; the rest shallowly concave; spines stout and 

 acuminate, little divergent, curved backward and slightly downward. Petiolar 

 node as broad or slightly broader than long, concave above, broadest and 

 narrowly rounded in front of middle. Postpetiole a little broader than long, 

 the medial furrow narrow. 



Shining. Mandibles coarsely striate. 



Head and gaster with very sparse recumbent pubescence. Pilosity scattered 

 on head and body, erect and moderately abundant; shorter and semierect on 

 legs and antennae. 



Color brownish yellow. 



Russell: West Bay. 



Described from several workers found on tree-trunks. Type. — 

 M. C. Z. 9,167. 



