436 Myr. F. Smith on the Synonymy of the genus Nomada. 
XLV.— Observations on the Synonymy of the genus Nomada of 
Fabricius, belonging to the family of Cuckoo or Parasitic Bees. 
By Frepericx Smiru. 
Tue revision of the European species of the genus Nomada by 
Dr. Herrich-Schaffer, published in Germar’s ‘ Zeitschrift,’ is by 
far the most elaborate and complete essay on the genus which 
has hitherto appeared, and is probably that to which the ento- 
mologists of the continent would refer as the most correct no- 
menclature extant. Our author has paid particular and careful 
attention to the descriptions of Kirby, but in many instances has 
arrived at erroneous conclusions: my office of Curator to the 
Entomological Society of London, in whose collection are depo- 
sited the original specimens from which Kirby drew his descrip- 
tions, gives me a constant opportunity of examining and deter- 
mining the species; and it is in the hope that my remarks and 
emendations may prove of general utility which mduces me to 
publish a revision of Schiffer’s paper. I have published elabo- 
rate descriptions, with remarks on all the known British species, 
in the second volume of the ‘ Zoologist,’ published in London 
1844. A further inducement, if any were wanting, has been the 
observations of Dr. Schaum in the ‘Entomologische Zeitung,’ 
where he expresses a desire that English entomologists would 
set themselves to the task of studying individual families, so as 
to bring about in them an agreement between English nomen- 
clature and that employed on the continent. The almost exclu- 
sive attention which I have for some years paid to the aculeate 
Hymenoptera, more particularly our native species, will I trust 
enable me to follow out with some success the objects so earnestly 
advocated in the paper referred to. I follow for the sake of 
convenience the arrangement of Herrich-Schiaffer, although it 
separates In my opinion some closely allied species : an arrange- 
ment founded on colour in so variable a genus as the present 
must of necessity separate sexes of the same species in some in- 
stances, and in others remove varieties from their legitimate 
position. 
Genus Nomapa, Fab. 
Species 1. ferruginata, Linn. 
Nomada ferruginata, Schiffer, Germ. Zeits. vol. i. p. 275. 1; Smith, 
Zool. vol. ii. p. 600. 14; Nylander, Mon. Ap. Boreali, Acta Soc. 
Scient. Fennica, p. 183. 
Nomada Germanica (male), Fab. Syst. Piez. p. 394. 78; Panzer, Fn. 
Ins. Germ. n. 72, tab. 17; St. Farg. Hist. Nat. Ins. tom. ii. 477 
(male and fem.). 
Apis ferruginata, Linn. Syst. Nat. ed. 12. p. 2779. 35; Vill. 3. 28; 
