6 gO F. Arthropoda. 



HaKctus IjatY . , 1) senescens Q, p. 30, von Bombay; 2) vernalis Q, p. 30, von 

 Ceylon; 3) timidus Q, p. 31, von Ceylon; 4) proximatus Q, p. 31, von Hako- 

 date, Japan, ~ leucozonius ; 5) familiaris Q, p. 31, ebendaher, r^> alipes; 6) albo- 

 zonatus Q, p. 32, von Punjab; 7) torridus Q, p. 32, von Natal; 8] niloticus , 

 p. 32, voni weiBen Nil; 9) albofasciatus Q , p. 33, von Sitd- Africa ; 10) diversus 

 Q, P- 33, von Natal ; 11) communis Q, p. 33, von Siid-Africa ; 12) vitripennis 

 Q, var. p. 34, von West- Anstralien imd Champion Bay ; 13) lamtginosus Qtf, 

 p. 34, von Anstralieu ; 14) conspicuus Q, p. 34, von Australien ; 15) oblitus Q, 

 p. 35 , vom SchwanenfluB ; 16) convexus Q, p. 35, von Victoria; 17) urbanus 

 Q, p. 35, von Champion Bay; I8]*vividus QcT> p. 35, vom SchwanenfluB ; 

 19) inclinans Q , p. 35, von Champion Bay; 20) humilis Q, p. 36, und 21) pun- 

 ctatus Q, p. 36, beide ebendaher; 22) agilis g? , p. 37, von Mexico , Oajaca; 

 23) exiguus Q, p. 37, von Mexico: 24) vugans Q, p. 37, oo tumulorum; 25) po- 

 litus Qcf, p- 38; 26) desertus Qcf, p. 38, alle ebendaher; 27) providens Q, 

 p. 39, von Guatemala; 28) placidus Q, p. 39, von Chili. 



Cacosoma 1 ) n. g., 1) discolor Qcf, p. 40, von Mexico, Oajaca; 2) abdominalc. 

 Qp , p. 40, von Chili; 3) agile tf , p. 40, von Brasilien ; 4) marginatum tf, 

 p. 41, von Chili; 5)jucundum Q^, p. 41, von St. Paulo, Amazon. 



Augochlora Sm., 1) acidalia Q, p. 41, von Uruguay, r^i ignita; 2) berenice Q, 

 p. 42, von Uruguay; 3) callisto tf, p. 42, von Monte Video; 4) acts Q?, p. 43, 

 von Monte Video und Uruguay; 5) atropos Q, p. 43, von St. Paulo, Brasilien: 

 6) deidamia Q, p. 43, von St. Paulo, Brasilien; 7) feronia Q, p. 44, von Con- 

 stancia, Brasilien; 8) calypso Q, p. 44, von Santarem; 9) chryseis Q, p. 44, 

 von Guatemala; 10) festiva $, p. 45, von Santarem; 11) laeta Q, p. 45, von 

 Ega, Amazon. ; 12) alcyone Q, p. 45, von St. Domingo; 13) nana Q, p. 46, von 

 Santarem; 14) Malta Qcf, p. 46, von St. Paulo und Villa Nova ; 15) briseis 5> 

 p. 46, von St. Paulo, Amazon. ; 16) aspasia ^, p. 47, von Mexico; 17) hebescens 

 2cf' P- 47 ' von Ega, Amazon. , St. Paulo und Para; 18) aurora Q, p. 47, 

 von Mexico. 



Megalopta Sm., 1) purpurata tf, p. 48, von Ega, Amazon. ; 2) nigrofemorata 

 2, P- 48, von Ega; 3) pilosa Q, p. 48, von St. Paulo, Amazon. ; 4) vivax Q. 

 p. 48, von Para, Brasilien; 5) cuprifrons Qcf, p. 49, von St. Paulo, Amazon.; 

 6) ornata Q, p. 49, von St. Paulo, Amazon. 



Andrena Fbr. , 1) torrida $cf, p. 50, von Bombay ; 2) mollis Q, p. 50, von 

 Bombay; 3) communis Q, p. 50, von Nord-Indien , Masuri bei 7000', <^jcetii\ 

 4) vitiosatf, p. 51, von Nord-China ; 5) dentata Q?, p. 51, von Japan, Yoko- 



!) Cacosoma n. g. p. 39 : Head about the same width as the thorax ; eyes subreniforrn ; 

 the ocelli in a triangle on the vertex ; the scape of the antennae two thirds of the length of 

 the flagellum, which is subclavate ; tongue very short, not longer than the paraglossae ; the 

 labial palpi 4-jointed, the 1. joint subclavate and as long as the two following united, the 

 2. and 3. joints short, stout, and clavate, the apical joint much narrower and filiform; the 

 maxillary palpi 6-jointed, the three basal joints short, stout, and clavate, the 4. and 5. joints 

 slender and slightly attenuated toward the apex, which is blunt. The anterior wings with 

 one marginal and three submarginal cells ; the 1 . submarginal cell a little longer than the 

 2. and 3. united, the 2. narrow and very slightly narrowed towards the marginal ; the 3. twice 

 the width of the 2., and much narrower towards the marginal. Abdomen petiolate in both 

 sexes, in the males clavate. Of this genus three species are at present known, but the Q of 

 the Mexican one only is described ; the form of the palpi separates them from the genera 

 previously established; the maxillary palpi are remarkable in having three stout joints and 

 three slender ones. In the neuration of the wings they agree with many other Halicti ; but 

 the clavate form of the abdomen at once distinguishes them. 5 species. 



