482 bulletin: museum of comparative zoology. 



69. Camponotus (Myrmegonia) cristatus Mayr, var. nagasau 



var. nov. 



The soldiers in a large series from different colonies taken on Taviuni have 

 the femora dark red instead of deep black as in tyiiical cristatus, a difference 

 that among a few specimens could be considered nest-variants, or as specimens 

 differing in age, but in the large series before me there is no variation in this 

 respect, so the Taviuni form may be considered varietally distinct. 



Taviuni: Nagasau (Type-locality), Some Some. 

 Type — M. C. Z. 8,719. 



69a. Camponotus (Myrmegonia) cristatus Mayr, subsp. sadina, 



subsp. nov. 



A large series of soldiers and workers are very similar in habitus to cristatus, 

 but the soldiers average smaller in size (length 8 mm.), have the posterior 

 corner of the epinotum more angulate in profile and an indistinct carina on the 

 basal third of clypeus. The worker in size, sculpture, and color are identical 

 with those of cristatus, but the epinotum projects as a pointed tooth, as in 

 laminatus. The legs are dark reddish brown as in cristatus var. nagasau. 



Taviuni: Some Some (Type-locality) Nagasau. Viti Levu: Nada- 

 rivatu, NaAai, Nasoqo. Vanua Levu : Labasa, Suene. 



This form is intermediate between cristatus and laminatus. 

 Type.— M. C. Z. 8,720. 



70. Camponotus (My'rmegonia) maafui, sp. nov. Fig. 31. 



Soldier. Length 8-9 mm. 



Near cristatus Mayr. Head longer than broad, narrowed in front, sides 

 nearly straight, posterior angles rounded, border broadly and shallowly con- 

 cave. Mandibles elongate, bluntly 7-dentate. Clypeus quadrate, much 

 longer than broad, anterior border broadly rounded. Clypeus shallowly im- 

 pressed as in C. cristatus. Antennal scapes slightly surpassing occipital border. 

 Eyes small and flat, situated at posterior third of head. Mesoepinotum com- 

 pressed, in profile irregularly sinuate along basal portion of epinotum, angu- 

 lately rounding into the declivity, the surface of which is nearly flat at sides 

 and subcarinate at middle. Petiole thick wedge-shaped, convex in front, flat 

 behind, rounded above; seen from the front, broadly rounded above. 



Moderately shining. Mandibles coarsely punctate and densely rugose- 

 striate. Head and thorax very finely coriaceous, the latter in addition with 

 fine regular punctures. 



