A NEW GENUS OF AUSTRALIAN CIXHDAE (HOMOFTERA). 



By F. MuiR, Hawaiian Sugar Planters' Experiment Station, Honolulu, T. H. 



{Communicated bt/ H. J. Carter, B.A., F.E.S.) 



[Read 26th April, 1922.] 



B A T H T M E R I A, n. gen. 



Closely allied to Leptoelamys Kirk, but the gTeat development of the front 

 legs distinguishes it. Vertex about twice as broad as long, with a transverse 

 carina about middle, a transverse carina divides vertex from frons; base very 

 shallowly emarginate, except in the middle, where there is a minute angular 

 emargination ; apex truncate, not produced beyond eyes. Length of middle of 

 face equal to width, widest slightly beyond middle, sides slightly cun'ed, apical 

 half more so than basal, apex of face deeply and roundly concave thus making 

 the sides longer than middle, marginal earinaei distinct, median carina some- 

 what obscure, no median ocellus but the median carina obsolete at apex. In side 

 view base of clypeus rounded, slightly produced, distinctly tricarinate. Antennae 

 globose. Pronotum fairly long, hind margin deeply and angularly emarginate 

 with a carina margining the middle half; no lateral carinae but a slight groove 

 runs from the anterior margin behind eye in a circle nearly touching the hind 

 margin, the area within this groove being slightly swollen. Mesonotum slightly 

 flattened in middle, tricarinate. Front legs considerablj' thickened, femora 

 slightly excavate along the ventral surface with small spines along each margin; 

 tibiae slightly excavate along dorsal surface with spines around apex. This ar- 

 rangement allows the tibia* to be laid close to the femora and the tarsi doubled 

 back upon the tibiae, as is often found in subterraneous insects. Other leg-s 

 normal; hind tibiae without spines. Ovipositor short, complete; the surface of 

 female pygofer forming a wax-secreting surface; female abdomen fairly full but 

 decidedly compressed horizontally. Male pygofer of the normal Cixiid type, 

 abdomen compressed horizontally. Tegmina of the Cixiid type, subtectiform, 

 claval veins joining about middle of clavus, entering bind margin before apex, 

 Sc and R forking at same level as Cu slightly beyond middle of clavus; R with 

 three apical veins ; first fork of M slightly before apex of clavus, five apical 

 veins, Mi, Mi., M2, M3 and M4. 



Type, B. helm.fi Muir. 



Bathymeria HELiisi, n.sp. 



J. Length 4.4 mm.; tegmen 5.6 mm. 



Dark brown or nearly black over head and thorax, carinae lighter, also the 

 raised area on pronotum, front nnd middle tibiae and tarsi and the hind legs 



