und Gyrinidee of Australasia. 217 
£. oblongo-ovalis, depressus, nigro- vel viridi-cyaneus; elytris 8-sulcatis, 
sulcis interioribus aliquando omnino obsoletis, marginibus viridibus; ely- 
tris apicem versus minute dentatis, ad apices rottndatis, apicibus ipsis 
haud longe distantibus; scutello triangulari, minuto; corpore subtus 
nigro-zeneo ; abdomine ad apicem ferrugineo; pedibus posterioribus 
rufo-flavis, anticis nigro-zneis, tarsis (tibiisque ad apicem) fusco-rufis. 
Long. corp. 5 lin., lat. 23 lin. 
This species closely resembles Z. assimilis, from which it may be 
separated by its more minute and more regularly triangular scutellum 
and by the fusco-flavous coloration of the last segment of the abdomen. 
Examples have been found near Melbourne and also near Adelaide. 
3. EH. assimilis, n. sp. 
£. ovalis, subdepressus, viridi-zeneus ; elytris utrinque 8-sulcatis, apice 
rotundato ; scutello haud parvo ; corpore subtus nigro-metallico ; abdo- 
minis segmento*ultimo rufo-nigro; pedibus rufo-nigris, posterioribus 
rufis. . 
Long. corp. 6 lin., lat. 23 lin. 
Suboval, rather broader behind the middle, a trifle broader than L. 
Reich, of a bright-green colour throughout: head impunctate, when 
seen under a high power covered with minute transverse or oblique 
strie, arranged irregularly: thorax of the same colour, the posterior 
margin being very narrowly of a dark copper-colour, and the lateral 
marginations sometimes black; the same minute strive as on the head 
are perceptible, but more minute: e/ytra with eight striz, obsolete at 
the suture, and becoming, as they approach the margin, deep channels ; 
the colour of these strize, when viewed under a strong lens, is of a 
bright red copper-colour ; between the strive the surface is transversely’ 
marked by very minute lines: abdomen, underside, anterior legs, and 
antenne metallic black: posterior legs rufo-fuscous. 
This species is very nearly related to Z. Reichit; it is, I think, dis- 
tinct ; it is somewhat larger when a series of each are viewed toge- 
ther, and the size of the scutellum, distinctly larger, well separates 
the two. 
These species, H. Reichit and E. assimilis, difter from all others in 
having the lateral margin of elytra and thorax in not absolutely the 
same line; avery slight angle is formed by their conjunction : in all 
other species the line is absolutely straight. 
I received this species from Mr. Stevens in 1855, from a collection 
forwarded to him from Australia. 
b. Elytrorum apicibus sinuatis. 
4. EH. latior, n. sp. 
E. oblongo-ovalis, sat parallelus, nigro-ceneus, nitidus ; thorace lato, late- 
