386 On Aquatic Carnivorous Coleoptera or Dytiscide. 
361. Sternopriscus clavatus, Wehncke, n. sp—Ovalis, sat angustus, sub-opacus, 
dense subtiliter punctatus, brevissimeque pubescens, rufo-testaceus, pectore 
infuscato; prothorace marginibus anterioribus (in medio) et posterioribus nigris, 
striga utrinque obsoletissima ; elytris nigricantibus, testaceo-maculatis ; antennis in 
medio fuscis ; elytrorum apice subobtuso. 
Mas, major (long. 4 m.m.) antennis ultra medium distortis; tibiis anterioribus 
curvatis ; pedibus intermediis leviter elongatis, tarsis crassiusculis. 
Fem., minor (long. 3; m.m.) antennis tibiisque simplicibus. 
Australia, (Sidney). 161. 
362. Sternopriscus tarsalis,n. sp. -- Ovalis, angustulus, sub-opacus, testaceus, pectore 
obscuriore, vertice prothoracisque medio infuscatis, elytris fuscis maculis parvis 
irregularibus testaceis; elytris thoraceque dense subtiliter punctatis, hoc utrinque 
plica distincta, corpore subtus dense punctato. Long. 28, lat. 1s m.m. 
In this species there is no trace of any constriction across the middle of the 
thorax, the base of which is quite as wide as the elytra, the plica on each side is 
distinct, but not strongly elevated, and there is no transverse depression between 
the two. 
The only individual | have seen of this species is I have no doubt a male. The 
front tibize are curved, the front tarsi are distinctly 5-joimted, the three basal joints. 
being dilated; the middle legs are long, their tibiee slightly curved and their tarsi 
greatly elongate, the five joints of these are very distinct, the 4th being about as. 
large as the third ; the antennee are rather elongate and slender. 
Australia, (Sidney). 162. 
363. Sternopriscus signatus, n. sp.—Ovalis, subopacus, testaceus, prothoracis. 
marginibus anterioribus et posterioribus anguste fuscis, elytris nigro-testaceoque 
variegatis ; prothorace lateribus rectis, utrinque plica minus distincta, medio obsolete 
transversim depresso; corpore toto dense subtiliter punctato, elytris subtiliter 
pubescentibus. Long. 25, lat 14 m.m. 
This species is allied rather closely to Sternopriscus tarsalis, but is smaller and 
less elongate, and the yellow colour is more predominant, and the punctuation is. 
somewhat denser and finer. 
I do not know the sex of the only individual I have seen; it has the front tibize- 
rather short but simple, the three basal joints of the front tarsi dilated, the fourth 
joint short but distinct, the fifth moderately long ; the middle tibize are rather stout, 
the basal joints of their tarsi dilated, the fourth joint distinct but not elongate, 
