170 Mr. G. C. Champion on 



etc., now under examination, include representatives of at 

 least 130 more, showing that hundreds of species must 

 exist on the southern continent. The following additions 

 to the distribution, etc., of six of the Central American 

 forms require notice : S. denticulata, Colombia [Mus. Brit.), 

 an insect with denticulate anterior femora, one of two 

 placed under Sect. Aa in the table given in the " Biologia," 

 the other, S. glahrata, having been found by Biolley as far 

 south as Costa Rica ; S. costaricensis, Colombia ; S. ingens, 

 Costa Kica (Biolley) ; S. alboUneata, Belize, British Honduras 

 {Mus. Brit.) ; S. nigripennis, Maid, [not Champ.], var. y 

 (Biol. Centr. Am., iv. 2, pi. 2, fig. 18), from Mexico, has 

 been named chamjnoni by Pic (Melanges exot.-entom. iv, 

 p. 20, Sept. 1912). Amongst the South American Statirae, 

 some [S. catenata, etc.) have very remarkable characters 

 in the legs, antennae, or aedeagus,^ or in the clothing of 

 the under surface, in the males. Other structural peculiar- 

 ities to be noted are : the presence of a long curved spine 

 on the narrow basal portion of the anterior femora ^ in 

 both sexes of certain species [S. suturalis, etc.) ; two rugose 

 stigmata on the disc of the prothorax {S. distigma, ^) ; 

 a basal constriction of the anterior tibiae (S. elegans, ele- 

 gantula, casnonioides) ; a deep, sharply-defined, triangular 

 or oblong sulcus on the prothorax in front {S. vageguttata, 

 etc.), etc. The apical joint of the antenna, too, is often 

 greatly elongated in the male, as in Lagria. The species 

 here enumerated may be grouped thus : — 



A. Anterior femora armed with a long curved 



spine at base Nos. 1-5. 



B. Anterior femora unarmed at base. 



1. Species large, shining, castaneous, with 

 darker, submetallic, catenulato-tubercu- 

 late elytra, and sharply dentate anterior 

 tibiae No. 6. 



2 Dr. Sharp has been kind enough to examine this organ in two 

 species {8. viridipennis and S. geniculata), and he tells me that 

 when two projecting pieces are visible, one will be the conjoined 

 lateral lobes (technically "tegmen"), the other the median lobe, 

 this being really tlie inner one. 



3 A character evidently noticed by Hope or Westwood, the 

 specimen of S. costaricensis in the Oxford Museum having an anterior 

 leg detached and mounted separately to show this structure. It 

 was overlooked by Maklin in S. stdtiralis. 



