Monophlebina. 453 



Very closely allied to cinerca^ of which it may possibly be merely a dwarf 

 form. It is a smaller and more compact insect, with pure white waxy processes. 

 The ventral operculum is more sharply defined, and has a conspicuous terminal 

 aperture for the exit of the young larva;. 



LABIOPROCTUS, gen. nov. 



Insects allied to Aspidoprodus^ but differing from that genus in that the 

 ventral invagination of the female is not closed by a secretionary operculum, 

 but by prominent lateral labiae. 



Males similar to those of Aspidoproctus. 



Larvae with five-jointed antennae. 



Type L. polei. 



LABIOPROCTUS POLEI, Green. 



(PLATE CXC.) 



Walkeriana polei, Green, Ind. Mus. Notes, Vol. IV., No. i, p. 6 (1896). 



Adult female {fi^s. i to 4) oblong oval, the dorsum strongly convex, the sides 

 compressed and slightly concave (see fig. 4). Dorsum of thorax with five 

 longitudinal series each containing four truncate-conical processes widely 

 spaced, those of the median series broadest, those of the outer series small 

 and comparatively slender. Dorsum of abdomen without processes. There is 

 a complete dorso-lateral series on each side, containing about twelve 

 processes, which increase in length towards the posterior extremity where 

 they closely overlap each other, and a complete marginal series of similar 

 processes. The dorso-lateral is widely separated from the marginal series, 

 except at the two extremities, where they approach each other. All the 

 processes are of a dense chalky consistency, the sides ribbed, and of an 

 ochreous tint, the truncate extremities white. The colour of the dorsum 

 between the processes is dull pinkish red, with a superficial whitish bloom. 

 Venter, with a deep median cleft immediately behind the third pair of legs ; 

 its sides guarded by raised lips meeting behind to form a V-shaped 

 prominence {st&fig. 3). This cleft communicates with an invaginated chamber 

 forming a marsupium for the reception of the newly hatched larva:. Antennas 

 {fig- 7) ten-jointed, of normal form ; each of the first nine joints with a ring 

 of setJE near its distal extremity. Legs {fig. 5) normal, the femur stout, the tarsus 

 more than half the length of the tibia. Claw {fig. 6) stout, falcate, ungual 

 digitules small and very slender ; tarsal digitules equally slender, but consider- 

 ably longer. Spines of ceriferous tracts (seey?;^. 13) abruptly expanded on the 

 basal fourth ; the distal extremity rounded and slightly expanded. Spines of 

 intermediate areas {fig. 12) longer and stouter, tapering more evenly to the 



