No. 3.] Original Communications, 99 



on each side, from which proceeds a deep tubular invagination con- 

 taining the anterior spiracle, this area being covered dorsally by the 

 glandular plates. The second pair of spiracles opens on the ventral 

 surface. The subrostral processes appear as fleshy rounded papillae 

 immediately below the mentum. There is no trace of the dorsal spine. 

 The anal ring (fig. 4, k.) has 10 hairs each arising from a chitinous 

 plate ; but there is a tendency for 8 of the plates to combine in pairs, 

 and, in some examples, they actually coalesce. The antennas are very 

 small and inconspicuous, even more vestigial than in the adult. 



Young larva (fig. 4, /.) elongate-oval: either crimson or yellow, 

 the r two forms occurring in about equal numbers. Antenna with 6 

 joints : 3rd long and dilated at extremity : 6th very irregularly fusi- 

 form : 5th with two very long whip-like hairs. Mouth-parts large 

 and conspicuous. Legs well developed : tarsal digitules set one behind 

 the other (fig. 4, m.), a single hair-like ungual digitule. Anal ring 

 with 6 hairs, each arising from a small circular plate. Spiracles small 

 and inconspicuous : a perforate chitinous plate covering the anterior 

 pai r. 



Habitat : On the small terminal branches of Ficus religiosa and 

 F. bengalensis ; Monghyr. (coll. Dr. Geo. Watt, Register No- 

 14916). 



This species is most closely related to the lac insect of commerce 

 [Tachardia lacca, Kerr.) ; differing from that species principally in 

 the much smaller, more globular, and more isolated tests of the adult 

 female. The structural differences of the insect itself are more of 

 degree than of quality. The stigmatic processes are shorter and more 

 truncate than those of T. lacca, and have fewer depressed spots on the 

 extremity. The antennae are more developed: in T. lacca they are 

 mere truncate tubercles, without trace of segmentation. From 

 T. mexicana it may be distinguished by the form of the test and con- 

 tained insect, which is 6-lobed in that species. From other described 

 species it is" more easily separable. 



Genus Monophlebus, Leach. 



The sub-family Monophlebince was defined by Signoret as contain- 

 ing all those species having 1 i-jointed antennas in the adult female. 

 But at that time not a single adult female of any species of Monophle- 

 bus proper appears to have been known to Signoret. Maskell has since 

 described M. crawfordi, with 9-jointed antennae, and M. fuscus 

 which has only 7 joints. Signoret himself described what he supposed 



