56 Transactions. — Zoology. 



Carteria acacise, sp. uov. Plate XII., figs. 11-15. 



Insects excreting a quantity of light-red or pinkish resinous 

 matter, aggregated in masses or in detached irregular pieces. 



Adult female red in colour, globular : diameter about 

 ■J-jin. Feet and antennae absent. Abdomen ending in a 

 thick cylindro-conical process as in the last species, but in the 

 specimens observed the extremity was very much less hairy. 

 The usual large strong spine is placed cibove the base of the 

 process. The two lac-tubes are on the thoracic region : they 

 are shorter than those of G. melaleuca:, and more widely 

 dilated at the end. The small circular spinnerets and the 

 little groups of tubular ones seem to be distributed over the 

 whole thoracic as well as on the cephalic region. 



Female of the second stage covered with a light-red 

 elliptical convex waxy test, the segments of the insect appear- 

 ing through the wax : length about -g-oin. : these tests are 

 often very numerous on a twig. The enclosed insect is sub- 

 elliptical, tapering slightly posteriorly ; the abdomen ends in 

 two short divergent anal tubercles, each bearing two spines ; 

 the compound anal ring between them bears several hairs. 

 Antennae and feet absent. Eudiments of lac-tubes may be 

 seen on the thoracic region, about as high up as the rostrum. 

 Eostrum rather small ; mentum monomerous. 



Larva not observed. 



Male unknown. 



Hab. In Australia, on Acacia sp. My specimens were 

 sent by Mr. J. G. 0. Tepper, of Adelaide, with a note : 

 " Collected by Mr. Helms, of the Elder Exploration, in central 

 Australia." 



This species, in the colour of its lac, resembles closely C. 

 larrece, Comstock, an American species. I note that J. M. 

 Stillman, in the " iVmerican Naturalist," vol. xiv., p. 783, says 

 that C. larrecu is also found on Acacia greggi. Our Australian 

 species differs, however, in the form and the position of the 

 lac-tubes. Comstock does not describe either larva or second 

 stage of his species. 



Genus Fkenchia. Gen. Nov. 



Females excreting a tubular, smooth, woody test, which 

 entirely covers them ; also at gestation forming an inner waxy 

 indusium closely attached to the insect ; also producing gall- 

 like swellings or excrescences in the twigs of the food-plant. 

 Abdomen distinctly prolonged. 



The only species yet known is apodous and without 

 antennae in the adult stage : pending discovery of other 

 species I refrain from including these as generic characters. 



I have included this genus amongst the Brachyscclidcv, as 

 it seems impossible to place it elsewhere, and it accords with 



