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Types. - Seven workers, taken in Tafi del Valle, on the road to Santa Maria, Tucuman Province. The type locality is 2000 m above sea-level, its climate is temperate and relatively humid. The types appear to be lost, as stated above in the introduction.
Discussion. - The status of the present form is beset with problems that have no easy solution, without recourse to the types, is still available. 1 believe that Kusnezov was right when promoting vallensisHNS (Kusnezov constantly spells vallense!) to full species level. As a matter of fact, daguerreiHNS is a significantly larger species with more undulated, mutually more approximated frontal carinae, scarcely prominent occipital lobe, longer scapes, armed epinotum, to mention just a few of the more obvious characters (cf. figs. 8 and 22). C. vallensisHNS is of smaller size, has more prominent occipital lobes, more broadly expanded frontal carinae which are scarcely constricted behind the frontal lobes. Its epinotum is unarmed and the scape does not project beyond the occipital lobes. It might be closely related with nemeiHNS, but in this form the postpetiole is extremely broad. The aberrant form, mentioned under lectusHNS on a following page, might fall under this name. Indeed, this form includes a specimen from Tucuman (Kusnezov leg., n. 2339), which agrees in general characters with vallensisHNS, but its lateral pronotal teeth are very low and the postpetiole is not cupuliform but broader. Short of settling all these doubts, I leave vallensisHNS as a species inquirenda.