43 



retained tliem as such in this work ; to sink a species is always an invidious task, 

 and should never be attempted, except on the clearest evidence, founded upon a far 

 more perfect knowledge of their history than we at present possess. I shall merely 

 indicate a doubt where any may exist, and leave the solution of the problem to 

 future investigations. 



Except in the number of the joints of the antennae, Sacium differs but little 

 from Arthrolips ,- in all other respects its anatomy presents only such modifications 

 as might be expected to occur between species of the same genus. Among the 

 species of Sacium a very great difference exists in the length and shape of the joints 

 of the antennte ; in some species they are short and transverse, but between the 

 two extremes of variation every intermediate grade can be found. 



SPECIERUM EPITOMA. 



Forma latissime ovata. 

 L. c. 2-25 mm. — Latissime ovatum, modice punctatum, castaneum 



elytris variegatis, ped. laete flavis, ant. obscurioribus . . . imperiale. 



FORJIA OBLONGA, AUT OVALIS, AUT OVATA. 

 ElYTMS VARIEGATIS. 



L. c. 1-0-75 mm. — Elongato-ovatum, modice punctatum, pronoto antice 

 attenuate, elytris rare nigris, plerumque rufo-fasciatis, aliquando 

 etiam maculatis, ped. atque ant. rufis ..... Oberthuri. 



L. c. I'oO mm. — Ovale, leviter punctatum, pronoto antice baud at- 

 tenuate, elytris fusco-castaueis, rufo-fasciatis, et diffuse maculatis, 

 ant. perbrevibus atque ped. Itete flavis ..... incertum. 



L. c. 1"75 mm. — Elongato-ovale, valde convexum, elytris nigro-piceis, 



fascia mediali et apicibus late rufis, ped. atque ant. flavis . . fasciatum. 



L. 0. 1-30 mm. — Oblougum, convexum, satprofunde punctatum, piceum, 

 macula sublunata rufescenti in elytro utroque uotatum, ped. atque 

 ant. flavis .......... lunatum. 



L. c. 1-12 mm. — Ovale, nitidissimum, sat profunde punctatum, elytris 

 nigris fascia mediali atque apicibus liBte rufis, ped. atque ant. 

 Iffite flavis . . ........ politum. 



L. c. 1-SO mm. — Elongato-ovale, pronoto flavescenti, elytris rufo-pieeis, 

 macula magna rotunda atque apicem versus fascia lunata flaves- 

 centibus in utroque notatis, ped. atque ant. laste flavis . . fenestratum. 



L. c. 1'30 mm. — Late ovale, leviter punctatum, fusco-castaneum, pro- 

 noto antice atque fascia i-ecta pone media et apicibus elytrorum 

 flavis, ped. longis laete flavis, ant. brevibus piceis . . . balteatum. 



L. c. 1'37 mm. — Ovale, latissimum, subtiliter punctatum, piceo-casta- 

 neum, fascia lata indefinita rufa pone media elytrorum notatum, 

 pedibus rufescentibus ........ indefinitum. 



L. c. 1'63 mm. — Obloogo-ovale, nitidissimum, profunde punctatum, 

 piceum, maculis quatuor rufis notatum, pedibus Iffite flavis, 

 ant. piceis .......... 4-maculatum. 



L. c. 1'37 mm. — Late ovale, nitidissimum, remote punctatum, pronoto 

 rufo, elytris rufo-piceis, macula humerali et fascia mediali rufis, 

 abdomine flavescenti, ped. et ant. Ifete flavis .... flaviventre. 



L. c. 1-25 mm. — Ovale, nitidissimum, distincte punctatum, pronoto 

 rufo, elytris nigris, fascia humerali atque alia apices versus Ifete 

 rufis, ped. atque ant. Ifete flavis ...... bifaseiatum. 



L. c. 1'37 mm. — Subovatum, nitidissimum, leviter punctatum, pronoto 

 rufo, elytris nigrescentibus, macula magna ovali flava utrisque 

 notatis, ped. atque ant. Ifete flavis ...... formosum. 



