110 
COLOMBIAN DERMAPTERA AND ORTHOPTER.\ 
to descriptive iiuiccuracy than to real differences of importance. 
Thus the anal segment is scarcely ‘Tnedio valde ciuadrato-emargi- 
natum,” but similar to that of percheron and best characterized 
as shoM'ing, between the bases of the forceps, a transverse depres- 
sion. “Pygidio niillo” is of course incorrect, this portion being 
as in percheron, while the subgenital plate is as described above 
rather than “medio apice sulcata.” 
The present male is readily distinguished from a pair of perche- 
ron before us, from Trinidad, in the Philadelphia Collections, by 
the head lieing as dark as the pronotum; the heavier, slightly 
more hairy and slightly lighter brown alxlomen with lateral angles 
of distal abdominal tergites sharper and distinctly keeled; anal 
tergite medio-longitudinally carinate distad, toward the forceps 
with sculpturing of dorsal surface more pronounced, and buffy 
limbs with femora all showing a single broad and dark annulus. 
ORTHOPTERA 
Blattidae 
ECTOBIINAE 
ASEMOBLATTA'' new genus 
The only known species of this genus has the general appear- 
ance of a rather short winged species belonging to, or near, the 
genus Carihlntia. Examination, however, shows it, in our opin- 
ion, to be a member of the Ectobiinae. 
The head is very short, forming ap])roximately an equilateral 
triangle. In this feature close agreement with the Ectobiine 
genus Lissoblatia is shown, but also similarity to the Oxyhaloid 
g(Mius Chorifionevra. The head is of an entirely different stiaic- 
ture in all foi-ms of the Pseudomopinae of the (h'oup Blattellae, 
whei’e this insect would necessarily be assigned in that subfamily. 
The armament of the limbs is weak, the ventro-cejihalic margins 
of the cejihalic femora snjiplied Avith a row of minute piliform 
sjiines, tlu'se features of ajipai’ently no assistance in ])laeing this 
insect. Tlu' j)i-onotum is sti’ongly ti’ansverse caudad, thus show- 
ing a type fi-iapH'nt in the (h-ou[) Blattellae of the Pseudomopinae, 
viirc in. tin* l^kdobiinae. The sonunvhat I’educed tegmina have 
■' From = insignilicant , or without dovicn. 
