162 Transactions. — Zoology. 



Hah. On KKcalyjJtns globulus, throughout New Zealand. 

 The insects are found in numerous colonies, adults, pupae, and 

 larvae intermingled, on the youngest shoots only of the tree, 

 congregated between the stem and the immature leaflets, the 

 spaces filled with their loose white cotton and meal. They do 

 not seem to do any damage to the tree. The leaves of E. 

 globuhis in their very young state are quite different from the 

 older ones (which latter, indeed, are not, I believe, strictly 

 speaking, real leaves) — they have a distinct bluish tinge, 

 whence the tree has derived its trivial name of " blue-gum," 

 and they exude a quantity of white aromatic gummy matter, 

 on which apparently Bhinocola eiicalyj^ti feeds, so that the 

 leaves themselves are not damaged. The insects are not par- 

 ticular about the seasons ; all stages may be found at any 

 time of the year in colonies, though in cold weather the winged 

 adults seem sleepy and sluggish. 



Eiicalyptus globulus is a Tasmanian tree, and Tasmania 

 may therefore be the original home of this Bhinocola. I have 

 not found the insect on any other tree in New Zealand, but on 

 E. globuhis it is very common. 



I have attached this insect to the genus Bhinocola on ac- 

 count of the straightness of the veins in the forewing (in 

 Aphalara they are usually much curved) and the absence of 

 processes from the genital plate of the male. There are some 

 minute differences from the genus, and the genitalia of the 

 male, taken by themselves, might relegate it to the genus 

 Psylla (compare P. viburni, Low, or P. salicicola, Forster), 

 but the wing-venation fixes it amongst the AphalarincR. 



The late Mr. J. Scott informed me that in the British 

 Museum there are no specimens of Psyllidce from this part of 

 the world, but that in one of the drawers there is " a label 

 relating to a species feeding on the Eucalyptus." I cannot say 

 whether this may refer to our species ; but probably it is rather 

 one of the three described by Mr. Dobson (" Proc. of Eoy. Soc. 

 of Tasmania," 1850, p. 235). These insects form little waxy 

 conical or scallop-shaped tests on various Eucalypti in Aus- 

 tralia, which tests are often aggregated in great masses of 

 " manna," used as food by the aborigines, and very sweet to 

 the taste ; indeed, a hungry Euroi^ean explorer lived awhile, 

 on one occasion, on this " lerp," as it was called. The adults 

 of Mr. Dobson's species differ slightly from our Bhinocola. In 

 their wax -producing habit they are entirely distinct. 



Rhinocola fuchsise, sp. nov. Plate XII., figs. 13-25. 



Adult female when first emerging from the pupa- case very 

 light yellow, almost white. Later, the head and dorsal surface 

 of the thorax become patched with black, the abdomen re- 

 maining yellowish. Eyes brownish-red, ocelli dark-yellow. 



