HELOPHORID^E. OCHTHEBIUS. 115 



rather obsolete impressions placed transversely, the posterior angles with a 

 curved depression on each : elytra rather convex, punctate-striated, the striae 

 regular and rather deep: body dusky beneath : legs pitchy: antennae and 

 palpi pale. 



Taken in Devonshire and near Swansea; also in the neighbour- 

 hood of London, and in Norfolk. " Spitchweek and Woodland, 

 Devonshire."— Dr. Leach. " Southend." — Rev. F. W. Hope. 

 " Parley-heath."—/. C. Dale, Esq. 



Sp. 3. pygmaeus. Fusco-ceneus, thorace unisulcato, elytris punctato-striatis, apice 



pedibusque rufo-piceis. (Long. corp. | — 1| lin.) 

 El. pygmaeus. Fahricius.—Oc. pygmaeus. Steph. Catal. p. 57. No. 578. 



Head punctate, dusky-brass, with a transverse impressed line, and two foveae on 

 the crown : thorax truncated anteriorly, with the sides rounded, above brassy- 

 brown, slightly convex, deeply punctured, with an abbreviated channel in the 

 middle, and an impressed bent fovea on each side : elytra ovate, slightly con- 

 vex, brassy-brown, with the apex pitchy-red; the disc regularly but finely 

 punctate-striated ; body pitchy-black : legs rusty-red : antennae and palpi pale, 

 with the tips dusky. 



Not uncommon in stagnant waters in the neighbourhood of 

 London. " Bottisham." — Rev. L. Jenyns. 



Sp. 4. impressus. Niger, thoracis lateribus utrinque fovea magna impressa, 



pedibus testaceis. (Long. corp. £ — 1^ lin.) 

 Hy. impressus. Marsham. — Och. impressus. Steph. Catal. p. 58. No. 579. 



Although this (so far as the original Marshamian specimens elucidate) appears 

 a distinct species from the foregoing, and may be distinguished by its colour, 

 as well as the magnitude of the lateral foveae on the thorax, it is nevertheless 

 possible that it may prove to be a mere variety: prevailing colour deep 

 shining black, sometimes obscurely glossed with aeneous: head obsoletely 

 punctate ; crown with larger impressions : thorax with the sides slightly di- 

 lated, the disc a little brassy and glossy, with a longitudinal channel in the 

 middle, and a deep fovea on each side near the margin : elytra deeply punc- 

 tate-striated : legs testaceous : antennae and palpi pale. 

 Not unfrequent in waters and ponds in the vicinity of London. 



" Southend."— i^a. F. W. Hope. 



Sp. 5. bicolon. Nigro-aneus, subnitidus, thoracis lateribus utrinque bifoveolato, 

 medio canaliculato, antennis pedibusque pallide testaceis. (Long. corp. § — 1 lin.) 



Hy. bicolon. Kirby MSS.~Oc. bicolon. Steph. Catal. p. 58. No. 580. 



Slightly glossy aeneous-black: head very obscurely punctured anteriorly, the 

 crown with two or three foveae : thorax with a rather deep central channel and 

 two impressed foveae on each side between it and the margins, the latter de- 

 pressed, slightly rugose and reddish: elytra rather convex, deeply and some- 



i 2 



