270 APPENDIX TO THE OATALOaUE OF THE INSECTS 



66a. HydrochuSj Germar, 



1. H. ELONOATUS, Fah. 



Steph. Illust, If and., ii., 110. — Ourtis, Brit. Ent, pi. 359. 

 Rare; Boldon Flats; in May.— I', J. B, 



2. H. BREViSj Rerhst. 



Stepli. Illust, Mand., ii., 110. 

 Not rare; Gosforth, and near Long Benton. May. — T. J. B. 

 It frequents the shallow muddy parts of ponds, and is very 

 lethargic in its motions. 



J3. H. PAEUMOCULATUS, Hardy. 



Angustatus, suhcylindricus, testaceo-hrunneus, opacus; thorace 

 inceqicali vix Joveolato ; coleojoteris obsolete crenato-striato- 

 punctatis, sutura, interstitiisque 4:-parum elevatis; tarsis 

 elongatis; ocidis minutis. Lon. corp. vix. lin. 1. 

 Very narrow, nearly cylindric, light brown, dull, not brassy; 

 eyes minute, not prominent ; thorax cylindrical, unequal, indis- 

 tinctly foveolated; coleoptera somewhat faintly crenate striated, 

 the suture and four interstices, two on eaeh elytron, slightly 

 elevated ; legs brunneo-testaceous, longish, tarsi testaceous, curved, 

 elongate, especially the last joint; antennae thin, and with the 

 rather short palpi, testaceous. 



I have no record for this beyond finding it in my collection, 

 made near Newcastle. I take it for a foreign insect, introduced 

 in the same manner as Bemhidiwn incurvum. — J. H. 



61. OCHTIIEBIUS. 



2. 0. EXSCULPTUS. Abundant, on stones exposed to the full forne 

 of the stream. Mitford, Morpeth, Washington, and Whittle 

 Dene. April— ^. J. B. 



2 a. 0. BicoLOR, Kirhy. 



Steph. Illust, Mand.,\i., 115. — Muls., Col. de France, Palpi- 

 comes, 64. 

 Not uncommon, on the mud of a runner, at Gosforth. — T. J. B. 

 July. 



6B>. HYDRiENA. 



1. H. PiPARiA. In a small stream, near Akeld Hill. — J. H. 



