374 bitlletin: mtseiim of comparative zoology. 



one and a third times as broad as long. Base of epinotum moderately convex, 

 about as long as broad, rounding into the declivity, which is flat and a little 

 longer than base. Petiolar scale in profile less than twice as high as thick, 

 slightly convex in front, straight behind and flattened dorsally; from above, 

 twice as broad as long, narrowly rounded and submargined laterally. Gaster 

 elongate, legs stout. 



Moderately shining. Mandibles rugulose and striolate. Truncated por- 

 tion of head more shining than the rest, the impressed surfaces lateral to the 

 clj-peus uneven and shallowly punctate. Cheeks anteriorly with a series of 

 short, irregular rugose carinae; the remainder of head shallowly and reticu- 

 lately punctate. Thorax and abdomen very subtly reticulostriolate. 



Head and body with a very few long erect hairs. Fine and short recumbent 

 hairs on head and gaster. 



Fig. 46. — Camponotus (Colobopsis) loa Mann. Worker minor. Lateral view of head, 

 thorax, and petiole. 



Reddish brown; mandibular teeth black; head with a fuscous blotch on 

 apex; basal two thirds of first, and apical two thirds of second and apical 

 one half of remaining gastric segments black. 



Worker {minor). Length 2.5-3 mm. 



Head longer than broad, slightly narrowest in front, occipital corners 

 rounded, border nearly straight. Clypeus large and convex, very obtusely 

 carinate, anterior border shallowly concave at middle. Frontal carinae 

 moderately divergent, extending to a point opposite anterior third of eyes. 

 Antennal scapes surpassing occipital corners by about one third their length. 

 Eyes large, little convex, situated in front of sides a little posterior to middle. 

 Pronotum rather flat above, broadest at middle with sides narrowly rounded. 

 Mesonotum broader than long, moderately narrowed behind, with straight 

 sides. Base of epinotum compressed and narrowly convex; produced at apex 

 as a short slightly projecting connule; declivity concave in profile and a little 

 shorter than the base. Petiole and gaster as in soldier. 



Moderately shining. Gaster with very dense, short transverse striolae, 

 the remainder of body and the head subtly and scriolately striolate. 



Sparse, scattered, erect hairs, and very fine and short recumbent hairs on 

 head and gaster. 



Pale yellow-brown; head posterior to antennal insertions darker, gaster 

 black, each segment with a yellowish band apically. 



