56 Mr. G. W. Kirkaldy on Aquatic Rhynchota. 
1859, p. 293, and Motschulsky, 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. lacustris and rivalis, Stephens (Syst. Catal. Brit. Ins. i. 
p- 354, 1829), Puton, Catal. Hém. faune paléarct. éd. 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, Ins. rec. Afr. et 
Amér., 1803. ] 
Coriva cognata, D. & 8. (Ent. Month. Mag. vi. p. 246, 
1870), is preoccupied by Fieber (Europ. Hem. p. 99, 1861) 
[whose species equals carinata, C. R. Sahlberg], and therefore 
requires anew 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 Reuter have 
not revealed its presence in Northern Europe, I have no hesi- 
tation in proposing the name 
4. * caledonica.”’ 
Fam. Notonectida. 
5. Notonecta Montandoni, sp. n. 
) S} 
NV. triguttate, Motschulsky, affinis, convexa; capitis vertice quam 
basi duplo latiore; oculorum marginibus lateralibus interioribus 
magis rectis quam apud ¢riguttatam; pronoto anteriore subcon- 
stricto: tibiarum intermediarum calcari minuto; hemielytris 
punctatis. 
Allied to WV. triguttata, Motschulsky, and chinensis, Fallou 
(to the former in structure, to the 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 clavus and 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. 
Fedes fusco-testaceous ; intermediate tibial spur very small. 
