488 



bulletin: museum of comparative zoology. 



72. Camponotus (Myrmegonia) lauensis, sp. nov. Fig. 35. 



Worker. Length 5 mm. 



Head longer than broad, sides nearly straight, sides of occiput roundly 

 carinate, occipital angles narrowly rounded, posterior border concave. Cly- 

 peus feebly convex, anterior border broadly rounded. Antennal scapes sur- 

 passing occipital corners by nearly half their length. Pronotum conve.x, much 

 broader than long. Mesoepinotum compressed, behind very strongly, with an 

 acute margin; in profile elevated, irregularly arcuate and projecting behind as 

 elongate triangular tooth. Epinotal base in profile strongly concave, its 

 surface rounded. Petiole eloijgate, cuboidal, inclined forw-ard; seen from 

 above triangular, with the corners rounded; anterior and lateral borders 

 margined. 



Fig. 35. — - Camponotus (Myrmegonia) lauensis Mann, 

 and petiole. 



Worker. Lateral view of thorax 



Moderately shining. Mandibles punctate and striate. Head, body, and 

 appendages coriaceous-rugulose. 



Erect hairs long and fine, sparse on head, more abundant on gaster. Shorter 

 appressed hairs sparse in head, body, and appendages. 



Color black. Legs light reddish brown. 



Lau: Kabara, Waquava. 



The structure of the head and petiole is ahnost identical with that 

 of schnu'ltzii but the more compressed and strongly backward-project- 

 ing epinotum is entirely different, resembling somewhat that of an 

 extreme form of laminalus. 



The subgenus Myrmegonia is made up of a complex of species, with 



