puhlicalion of " Jurinean " Genera of Hymenoptera. 419 



men, porrect, blunt maxillae {i. e. mandibles) and a bristle- 

 shaped tongue {i. e. probably an Apis in the sense of 

 Kirby, perhaps a Chelosioma) ; praecox Sep. is generally 

 supposed to be the Andrena so-called by recent authors 

 (sec. Dalla Torre Cat., etc.). 



Lamarck, in 1801, (Syst. An. sans Vert. 136) cited Apis 

 variegata L. (an Epeolus Ltr.) as the Type of Nornada F. — 

 this species was included in those enumerated by Fabricius, 

 but did not occur among Scopoli's types. 



In 1775, Fabricius described a genus Nomada, without 

 allusion to Nomada Scopoli. Were Nomada F. and 

 Nomada Sep. the same genus ? If not, Nomada F., one 

 of the oldest and most universally adopted of all generic 

 names must sink as a homonym — yet it is very difficult 

 to answer the above question positively in the affirmative. 

 Fabricius' original genus consisted of seven species, of 

 which only two (ruficornis and fabriciana) belong to Nomada 

 as at present accepted. 



There is a ruficornis among Scopoli's species, but J. L. 

 Christ [Naturg. Class. Ins. 161 (1791)], after briefly de- 

 scribing Nomada ruficornis Sep., says that Fabricius 

 describes a " Verschiedenheit " (Variety ?) as Nomada 

 ruficornis, and, mentioning inter alia, that Fabricius' species 

 has the thorax marked with red, and the abdomen with 

 yellow — these characters, apparently, not existing in 

 Scopoli's insect. The latter, however, seems to be a 

 Nomada in the modern sense (not, as might be suggested, 

 a Sphecodes), since the antennae, labrum, and parts of the 

 legs are said to be red. If ruficornis Sep. and ruficornis F. 

 are conspecific {i. e. different sexes, or varieties, of the same 

 insect) the Type of Nomada Sep. is fixed, since Fabricius 

 includes this species in his genus, of which it is cited as 

 the Type by Latreille (1802), Curtis (1832), and Westwood 

 (1840). It is clear at any rate that if any species of 

 Nomada Sep, can be identified with a Nomada in the 

 modern sense, that species ought to be treated as the 

 Type of Scopoli's genus — otherwise needless and intolerable 

 confusion will be introduced into our Lists. 



47 



111-32. Andrena (F.) Jrn. Erl. Litt-Ztg. 1. 164. 



"Gen. 32 Andrena— Andrena succincta, blcolor. Andrena 

 (Nomad. Fabr. inedit) lobata Panzer. Nomada gibba Fabr. 

 Andrena musciform. Ross. (Nomada Nigrita Fabr. inedit.^ 



TRANS. ENT. SOC. LOND. 1914. — PARTS III, IV. (fEB.) EE 



