52 COLEOPTERA. 



16. Gyrinus Suffriani, Scriba, Stett. Ent. Zeit., 1855, 



280; (Kiesenwetter) Schaum, I. c, 142; D. Sharp, 

 1. c, 134. 



Dr. Sharp records single specimens from Dumfries and 

 Horning, and a small series from Mr, Desvignes' collection. 

 These have been compared by Mr. Crotch with types of 

 G. Sifffriani received by him from Herr Scriba, with which 

 they are stated to agree in every respect, and appear to be 

 allied to G. natatory and nearly equal in size to the smallest 

 vars. of that insect, but to be readily distinguishable by the 

 punctures of the strias of their elytra being obsolete towards 

 the apex, but deep and distinct at the base. 



Kiesenwetter states G. Suffriani to be nearest to marinuSf 

 on account of its flat build and the uniform strength of the 

 elytral striae ; but to be easily distinguishable from that 

 species by being black beneath, with the inflexed margin of 

 the thorax and elytra and the apex ferruginous.* 



17. Gyrinus ^neus, (Leach, M.S.) Stephens {nee Aube); 



£. C. Rye, Ent. Ann., 1869, 23; D. Sharp, I.e., 



V, 217. 

 Dr. Sharp shows in effect that this insect must be treated 

 as non-existent ; Leach's cBueus being, on good evidence, 

 opacusj Sahl., and Stephens' description applying to marinus, 

 Gyll. 



18. Aleochara lata, Grav., Col. Micr. 186, 2; D. Sharp, 



1. c, vi, 134. 

 fuscipeSf var., Erich son ; Kraatz. 

 Dr. Sharp points out characters for specifically distin- 



* The uniformity in the punctuation is probably intended to refer to 

 the outer and inner strisp, which often vary in intensity. 



