The Scottish Naturalist. 



339 



Th. test., with a met. cloud on disc. E. test, with 

 some dusky clouds. Legs., pal., and an., yel. Ap. 



of pal. often dusky. 



2X 



1 E! 



LlMNEBIUS. 



1. Not less than I 1. E. b. or pit. b., not closely punc. 



Pen. j. of pal. not much thicker than ap. j. . 



- - - -. E. dull brown, minutely and closely punc. 

 Pen. j. of pal. abruptly and consp. thicker than ap. 

 j. H. and th. dusky, sides of th. pale. An., pal., 

 and legs test. I y& 1. E. . 



Less than I 1. . 



2. B. or pit. b. Sides of th. and of e. (more or less) pale. 



An., pal., and legs, dusky, or reddish. Rather a 

 narrow el. species, strongly narrowed behind. E. 

 spar, and rather dist. punc. Tib. of 6 strongly 

 bent and dil. <J i^ 1. $ I 1. E.S.I! 

 Very like ? of prec. Dist. shorter, broader, and less 

 narrowed behind. Th. less contr. in fr. Punctua- 

 tion not close, but varying somewhat *n intensity. 



1 1* -L>. O. X, • • • • • 



3. Shining b. Obsc. and not closely punc. Not broad ; 



narrowed behind. Mars, of th., ap. ofe., the pal., 

 and legs, reddish. ^ 1. B. 



- -. Without dist. puncs. Not broad ; narrowed 

 behind. Sides of th., and ap. of e., pale. Ba. 

 part of pal., and the legs, reddish. Ap. j. of pal. 



pit. 



1. E.*- 



Ch^etarthria. 



Very conv. aud strongly rounded. Very faintly punc. 

 Shining b. Sides of th., and sides and ap. ofe., 

 pale. Legs reddish. % 1. B. 



Spercheus. 



Roughly punc. Some elev. ridges on e., especially 

 behind. A broad rounded species. Test, brown, 

 spotted or clouded with dusky. Legs pal. , and ba. 

 of an., reddish. CI. of an. dusky. 3X h E. s - . 



Helophorus. t 

 I. Deep. b. E. uneven, with consp. polished tubercles on 



affinis 



papposus 

 3 



truncatellus 



marginalis * 

 Steph. 



nitidus 



picmus 



seminulum 



emarginatus 



*This species being omitted in Dr. Sharp's Catalogue, I append the 

 author's name. Stephens' description is, I think, sufficient to identify the 

 insect ; I know no other to which it would apply. 



+ Several species in this genus have been determined as British since the 

 publication of Dr. Sharp's Catalogue. They were introduced by Mr. Rye 

 and myself in the E. M. M. of July, 1876. I have appended the author's 

 name to the descriptions of these. 



