106 Journal of the Asiatic Society of Bengal. [ April, 1906. 
at the edge of the jar, with the tip of its abdomen on the surface. 
When held under the water it drowned in a few minutes, much 
more rapidly than a specimen of Periplaneta americana would or- 
dinarily have done 
escapes notice very easily. In 19002 I stated as regards an uati¢ 
fit it for an aquatic existence. I find, however, that a very similar 
arva, not uncommon in Calcutta among the roots of a floating 
water-plant—Pistia stratvotes—is devoid of ordin spiracles but 
te meen 
1 The identificatio : imens 
in the collection of the Tndie : yp tdadting Saussure, who examined spec 
a Proc. Zool, Soe., 900. 
: P- 
sf ig ee er ote et ald Seite ta et ian er ta aa 
? 
i 
; 
. 
2 
