58 Journal Xew York Entomological Society, H'o'- xxii. 



Worker minor. — Length 4.5-5 mm. 



Very similar to the worker major in color and sculpture, but the head is 

 pale brown. 



Female. — Length about 8.5 mm. 



Body smaller, head more shining and more superficially sculptured than in 

 the female picipes. Head, thoracic dorsum and the whole gastcr black ; epi- 

 notum, tibias and tarsi brown, pleurae, femora and petiole yellow. Wings long 

 (12.5 mm.), brownish yellow, with resin yellow veins and brown stigma. 



Male. — Length 6.5 mm. 



Differing from the male of the typical picipes only in its smaller size. 



Described from numerous workers, a male and female, from nests 

 under stones at Guerrero Mill. 



37. Camponotus nitidus Norton var. nuperus new var. 



Worker major. — Length 6-6.5 '^irn- 



Head rather small, excluding the mandibles a little longer than broad, a 

 little narrower in front than behind, with rounded sides, posterior border and 

 posterior corners, convex above, with large, flattened eyes situated just behind 

 the median transverse diameter of the head. Mandibles short, with 5 sub- 

 equal teeth. Clypeus strongly carinate, its median portion as broad as long, 

 with its anterior lobe very short, rounded and entire. Frontal area distinct, 

 large and triangular. Frontal carinae straight, strongly diverging. Frontal 

 groove distinct, a little longer than the frontal carinae. Antennal scapes 

 slender, terete, slightly curved at the base and feebly and gradually thickened 

 towards their tips, reaching fully one-third their length beyond the posterior 

 border of the head. Thorax short, laterally compressed, especially behind, 

 feebly and regularly arcuate above in profile, but the epinotum with its 

 straight base forming a rather sharp ridge, shorter than the declivity and 

 making with.it nearly a right angle, as the declivity is nearly perpendicular 

 and distinctly concave. Promesonotal and mesoepinotal sutures pronounced. 

 Petiole small, nearly as broad as the epinotum, but much lower, in profile 

 cuneate, thick at the base, with convex anterior and flat posterior surface 

 and the superior border sharp, entire and evenly rounded when seen from 

 behind. Gaster of the usual shape ; legs rather long. 



Shining throughout ; mandibles densely striato-punctate, smoother at the 

 base ; remainder of body smooth and very finely shagreened ; clypeus and cheeks 

 with large, shallow, sparse punctures. 



Hairs golden yellow, erect, very sparse on the clypeus, front, vertex and 

 gaster, absent on the thorax, petiole and appendages, except at the tips of the 

 scapes and on the knees, where there are a few small hairs. Pubescence 

 extremely fine and dilute, visible only on the pleurae, epinotum and venter. 



Yellow; gaster, posterior portion of head, front, tips of mandibles and 

 clouds on the thoracic dorsum dark brown, posterior borders of gastric seg- 

 ments paler, .\nttnnx reddish brown. In some specimens the anterior portion 



