442 bulletin: museum of comparative zoology. 



coarsely striolate. Petiole and postpetiole rugosely punctate. Gaster 

 subopaqiie, densely punctate, with a few erect black hairs. 



Color black, except the head, which is somewhat reddish. 



Described from six workers taken near Manaos. This form, which 

 is named after Don Antonio Autrun, our genial host at Kete Purangi, 

 differs from C. stoJli in the shorter antennal scapes and in sculpture 

 and color, besides being smaller. The epinotal spines are shorter 

 and thicker and the head and thorax lack the long, erect hairs of C. 

 stoUi. I am in doubt whether C. autruni should not be considered as 

 specifically distinct rather than as a subspecies. 



99. Crematogaster (Crematogaster) heathi, sp. nov. 

 Plate 3, fig. 27. 



Worker. Length 2.5 mm. 



Head about as broad as long, with slightly convex sides and broadly 

 rounded occipital corners; occiput faintly excavated. Eyes small, 

 little convex, located at sides of head slightly posterior to middle. 

 Mandibles short and stout, the blade strongly concave. Antennal 

 scape not reaching the occipital corners; funicular joints, except 

 those of the club, subglobose, as broad as long. Clypeus quadrate, 

 as broad as long, the anterior border broadly rounded. Prothorax 

 subglobose; pronptum as broad as long, with narrowly rounded sides, 

 so that the disc is transversely oval, broadly rounded above. Epino- 

 tum with a very short base, which is narrowly rounded, giving in 

 profile the appearance of a tubercle; the declivity is three times as 

 long as the base, with a broad, flat surface, on either side of which is a 

 strong spine curving outward and upward. Petiole flattened above, 

 not quite so broad as long, with straight posterior margin; postpetiole 

 subglobular. Gaster short and broad, triangular. 



Head shining, minutely punctate throughout, the front with sparse, 

 coarse punctures. Thorax, petiole, postpetiole, and legs sublucid. 

 Gaster subopaque, densely punctate. Head and thorax, petiole and 

 postpetiole in front sparsely pilose, the pile fine and recumbent. 

 Antennse, legs, and abdomen with erect pilosity. 



Color red, except the gaster, which is black, and the legs, which are 

 somewhat infuscated. Pile and pubescence yellowish. 



Described from a large number of workers taken from twigs at 

 Independencia. This species is related to C. brevispinosa from which 

 it differs in the structure of the epinotum and in the absence of teeth 



