1943] 
New Indian Embioptera 
107 
caudad, thence abruptly turned (90°) laterad, tapered distally. 
Left cercus-basipodite (LCB) membranous laterad but very 
strongly pigmented and swollen mesad; the inner margin 
straight, broadly rounded at each end and at least half as long 
as basal segment of left cercus (LCi). 
Holotype: Male , on slide, from R. Tunga, at light, 1865 feet 
elevation, Shimoga, Mysore, South India (P. S. Nathan). De- 
posited in the Museum of Comparative Zoology. 
Paratypes: Five topotypic males collected in May and July 
deposited in the above collection and that of the writer. 
One additional male at hand, from Nedungadu, South India, 
IV-6-(P. S. Nathan), is tentatively assigned to this species. 
However, if a study of a series reveals that its peculiarities are 
constant in a definite geographic area, it may be regarded as a 
subspecies of falcis. This male differs from the above series as 
follows: Much larger in size, head light brown, submentum 
golden in color, eyes more strongly inflated sides of head more 
strongly convergent (the head of the type series varies in form 
in this direction, but the color is constant) ; spine of LPPT 
stouter (this spine though constantly narrow in the series, varies 
considerably in size and curvature, especially the arm directed 
laterad). 
Falcis is a close relative of saundersii (Westwood) which has 
been collected at the same locality, but is very distinct from it 
in many details, e.g., 10 LP is parallel-sided (sides not curved), 
10 RP 2 has the subapical tooth more prominent; LCB is more 
broadly lobed mesad; the spine of LPPT is much narrower, 
with its lateral extension greatly developed. 
Both species are members of a very natural group of Oligo- 
toma , centered in distribution in the Indian Region (aside from 
the spread of three species by man, i.e., saundersii , nigra, hum- 
bertiana ), which is characterized by the prominent, ring-like 
left cercus-basipodite with its mesal lobe, and a sclerotic, spine- 
like development of the left paraproct. These species may be 
separated as follows: 
Key to Species of Saundersii Group of Oligotoma (Males) 
1. 10 RPj with a prominent subapical spine on outer side 2 
10 RP X without a subapical spine, or when present it is very 
small and inconspicuous 3 
2. LCB with inner lobe prolonged caudad along inner side of 
