156 THE VICTORIAN NATURALIST. 



Nitysch, and Burmeister, and is given in " Monographia 

 Anoplurorum Britannise " by H. Denny (1852) as follows: — 



Sub-order — Mallophaga. 



Family ... Philopterida; Liotheida.- 



Genus ... Trichodectes Philopterus Gyropus Liotheum 



Sub-^eiiera. Sub-genera. 



Docophorus Colp6cephaluni 



Nirmus Menopon 



Goniocotes Nitzschia 



Goniodes Trinoton 



Lipeurus Eureum 



Ornithobius ' Lsemobothrium 

 Physotomum 



The genera Trichodectes and Gyropus are parasitic upon the 

 mammalia only, and in determining the Australian forms we 

 have followed the classification given above. 



The insects to be described have been collected both from 

 birds in their native state and from the same species in confine- 

 ment at the Melbourne Zoological Gardens, and have been found 

 to correspond in every instance, and to be constant in their 

 characteristics. 



I. — Lipeurus giganteum, found on Australian Crane or 

 Native Companion, Antigone au&tralasimia. 



Dirty white and shining head, sub-cordate clypeus truncate, 

 lateral margins sinuated to receive eyes and antennae, temporal 

 angles rotundate, base concave ; antennae in female filiform, with 

 first joint the thickest and second longest; male first joint very 

 long, with a blunt tooth on inferior margin, second cylindrical ; 

 third short and internally produced ; fourth and fifth small and 

 filiform. Prothorax narrower than head, which it overUps in- 

 feriorly, slightly convex anteriorly. Metathorax truncate in front, 

 lateral margins gradually widening to basal angles, which are 

 semi-acute, base truncate. Legs white, ungues chestnut. Abdo- 

 men semi-elliptical, with sides a little serrated ; last segment in 

 female cleft, in male produced, forming an obtuse angle. Length 

 — Male 2^, and female 3 lines. 



2. — Lipeurus ibis, found on White Ibis, Threskiornis stricti- 

 pennis. 



Elongate, with a broad intermittent chestnut band round 

 the body ; head very long, somewhat conical ; clypeus semi- 

 hemispherical, with two hooked lines extending from its base 

 downwards, and two small hairs on each side ; antennse long 

 and filiform in female, and slightly stouter in male, with the last 

 two joints at an angle with first three ; eyes prominent, an 

 indefinite line extending from base of antennae to base of head, 

 which is truncate. Prothorax quadrate, sides deep chestnut, 

 metathorax widest posteriorly, sides chestnut. Legs long and 



