56 Mr. G. W. KIrkaldy on Aquatic Rhynchota. 



1859, p. 293, and Motsclmlsky, Bull. Soc. Moscou, xxxvi. 

 (pt. 2) p. 94 (1863), appears to be merely a list name (as is 

 also Nepa minor ^ Walk.), and I am not aware of any pub- 

 lished descriptions ; the same remarks probably apply to 

 C. Jacustris and rivalis, Stephens (Syst. Catal. Brit. Ins. ii. 

 p. 354, 1829), Puton, Catal. Hera, faune paldarct. dd. 3 

 (1886), p. 66. nos. 54 and 55. 



[Even if published. Walker's Nepa minor could not stand, 

 as it is preoccupied by Palisot de Beauvois, lus. rec. Afr. et 

 Amdr., 1803.] 



Coriiva cognata, D. & S. (Ent. Month. Mag. vi. p. 246, 

 1870), is preoccupied by Fieber (Europ. Hem. p. 99, 1861) 

 [whose species equals carinata, C. H. Salilberg], and therefore 

 requires a new name. It seems to be a bug of exceedingly 

 limited range, and restricted to Scotland ; and as the researches 

 of Thomson, Wallengren, the Sahlbergs, and Keuter have 

 not revealed its presence in Northern Europe, I have no hesi- 

 tation in proposing the name 



4. " caledonica.'''' 



Fam. Notonectidae. 



5. Notonecta Montandoni, sp. n. 



N. triguttatce, Motschulsky, affinis, convexa ; capitis vertice quam 

 basi duplo latiore ; oculorum marginibus lateralibus interioribus 

 magis rectis quam apud triguUatam ; pronoto anteriore siibcon- 

 stricto ; tibiarum intermediarum calcari minuto ; hemielytris 

 punctatis. 



Allied to N. triguttata^ Motschulsky, and cJiinensis, Fallou 

 (to the former in structure, to tlie latter in appearance and, in 

 a less degree, structure) , but larger and more robust ante- 

 riorly ; head much broader and shorter ; vertex a trifle more 

 than twice as wide as the narrowest part of the head (near 

 the base) . 



Head and pronotum sordid testaceous ; eyes crimson ; pro- 

 notum finely but deeply punctate posteriorly, superficially 

 rugose anteriorly ; scutellum black ; hemielytra punctate, with 

 sparse pale pubescence ; dark crimson-lake, irregularly marked 

 with black ; as a rule the membrane is entirely, or almost 

 entirely, black ; in some specimens there are scarcely any 

 spots at all on the clavusand corium, in others a broad undu- 

 latory band runs across the corium ; embolium either entirely 

 concolorous with the ground-colour of the hemielytra or 

 blotched with black. 



Pedes fusco-testaceous ; intermediate tibial spur very small. 



