JAMES A. G. REHN 
357 
These specimens agree quite well with the original description 
of this species, which will fall more naturally into Symphyloxiphu^^ 
than into Cyrtoxipha or Anaxipha. The tegmina are of the type 
found in the female of Symphyloxiphus, with the veins somewhat 
more elevated but of similar direction and disposition, while the 
distal palpal joint is more of the type of Anaxipha. The form of 
the proximal antennal joint is, however, much like that of the 
genotype. It would seem that S. magyiificum Rehn, the geno- 
type, shows a number of features of decided difference from 
Anaxipha, and even more from Cyrtoxipha, but that certain 
other species, among them abhreviatum, to a degree bridge this 
gap. We feel the affinity of these forms is more properly ex- 
pressed by ranging them with magnificum, although in certain 
features they are less divergent from A naxipha than is S. niagni- 
ficum. Without males we can not make the full comparisons 
we should like. 
Symphyloxiphus pulex new species (PI. XXVII, figs. 7, 8 and 9.) 
Closely related to S. abhreviatum (Bruner), agreeing in the 
general form, but differing in the proportionately broader inter- 
antennal portion of the rostrum, the shorter and broader prono- 
tum, the more quadrate lateral lobes of the pronotum, the more 
regularly disposed and less numerous dorsal tegminal venation 
of the female, and in the shorter and relatively more robust ovi- 
positor and caudal femora. When compared with S. magnificum 
Rehn, this species is readily distinguishable by its shorter distal 
palpal joint, its broader pronotum, shorter cephalic limbs, more 
sparsely and more strongly venose tegmina, more robust and 
inflated caudal femora, in the shorter and more robust ovipositor, 
as well as the non-strigate external face of the caudal femora. 
From hicolor (Chopard)^^ the new form apparently differs in the 
same features as from niagnijicum. 
Type. — cf ; Petropolis, State of Rio de Janeiro, Brazil. April 
12 to 14, 1913. (Malcolm Burr.) [Acad. Nat. Sci. Phila., Type 
no. 5339.] 
Rehn, Proc. U. S. Nat. Mus., xxx, p. 603, (1906). [Genotype: S. ynagnifi- 
cum Rehn, from Costa Rica.] 
Vide infra. 
TRANS. AM. ENT. SOC., XLIII. 
