HELOPHORID.E. HYDRJENA. 117 



B. Elytra punctate, not striated. 



Sp. 9. punctatus. Plate XIV. f. 2. Subelongatus, wneo-nitens pubescent; 



thoracis disco sulco dorsali foveisque plurimis impressis, elytris punctatis, kaud 



striatis. (Long. corp. 1^ lin.) 

 Oc. punctatus mihi. Steph. Catal. p. 58. No. 584. 



The largest. and most remarkable species of the genus; somewhat elongate, 

 glossy-brass : head with an elevation on the front, the crown with two deep 

 fovea? : thorax with a central channel and four impressions on each side, the 

 two lateral ones united together by an arched impressed line : elytra slightly 

 glossy, somewhat pubescent, thickly and minutely punctured throughout: 

 legs pitchy-testaceous, with the tarsi dusky : antenna? and palpi testaceous, 

 the apex of the latter dusky. 



I have little doubt that this will form the type of a new genus, as the form of 

 terminal joint of the palpi appears to differ from that of the true Ochthebii ; 

 and the antenna? are somewhat elongate. It may be the Och. exsculptus, 

 liege an. 



This singular insect, of which I have seen but two examples, was 

 found either near Bristol or in Glamorganshire. " Netley." — Rev* 

 F. W. Hope. 



Genus XCVIIL — Hydrzena, Kugellcm. 



Maxillary palpi about three times as long as the antenna? ; the terminal joint 

 thickened in the middle, attenuated at each end, the basal short, straight, the 

 second very long, bent, slender, the apex rather thickened, the following 

 about half the length of the second, obscurely thickened at the tip. Antennae 

 with the first joint elongate, bent, incrassated at the apex, the following short, 

 ovate, succeeded by a slender subulated process, to which the club, which 

 consists of six joints, the terminal largest, is attached : head large, porrect : eyes 

 small, immersed : thorax subquadrate : body oblong : legs rather elongate ; 

 tarsi long and slender. 



The extraordinary length of the maxillary palpi at once distin- 

 guishes this genus from the other Helophoridse. It is most probable 

 that we have more than three species in England, as there are 

 several known on the continent ; and among the specimens which 

 I possess there is considerable diversity of appearance, though I 

 have not ventured to consider them distinct, from not being 

 thoroughly acquainted with the actual localities of the individuals. 



Sp. 1 . riparia. Elongata, piceo- aut hrunneo-nigra, elytris creherrimi punctato- 



striatis, pedibus pallide rufescentibus. (Long. corp. 1 — 1^ lin.) 

 Hy. riparia. Kugellan. Steph. Catal. p. 58. No. 585. 



Proportionately more elongate than the other species of the genus, and of a 

 superior bulk: head black, slightly convex, finely punctulate anteriorly, 

 rather more deeply on the crown : thorax slightly convex ; the sides a little 



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