360 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



CALOBRACON BICOLOR P.ffiNEUNICOLOR, new subspecies. 



Type-locality.— Asuncion, Paraguay, November and December, 

 1904, J. D. Anisits. 



Type. — Konigliche Zoologische Museum, Berlin. 



Female. — Length 14 mm.; agrees with the original description of 

 Colohracon hicolor Szepligeti except in the first abscissa of the cubitus 

 which is not broken at the base, in the yellowish postorbital line, in 

 the blackish tegulse, reddish mesostemum and almost entirely black 

 or blackish abdomen. 



Allotopotype — Somewhat smaller than the type, otherwise essen- 

 tially as in the type. Two female paratypes are from Villa Morra 

 and were collected November 19 and October 14, 1905, the latter 

 specimen is only 11 mm. long 



Genus CHELONUS Panzer. 



TABLE OF SOME SOUTH AMEEICAN SPECIES. 



1. Carapace simple at apex, uniformly sculptured 2. 



Carapace with a characteristic area or foramen at apex; antennae less than twenty 



jointed 5. 



2. First joint of the flagel hardly shorter than the scape or as long or somewhat longer 



than the scape 3. 



First joint of the flagel distinctly shorter than the scape; carapace with subbasal 

 lateral maculae bipiistulatus Viereck. 



3. Carapace hardly twice as long as wide in the middle 4. 



Carapace nearly three times as long as wide in the middle buscki Viereck. 



4. Scape stramineous gossypii Viereck. 



Scape black or blackish chilensis Viereck. 



5. Carapace twice or nearly twice as long as wide in the middle 6. 



Carapace nearly three times as long as wide in the middle ruficollis Viereck. 



6. Basal two-thirds of the carapace reticulate szepligetii, new species. 



Basal two-thirds of the carapace striate, with reticulations between the etrise. 



toumsendi Viereck. 



CHELONUS (CHELONELLA) SZEPLIGETH, new species. 



Type-locality. — Pernambuco, Brazil. 



Type.— C&t. No. 13795, U.S.N.M. 



Female. — Length 3 mm.; compared with the original description 

 of Chelonus sohrinus Szepligeti, the male of which alone is described. 

 This differs as follows: Front medially shming, striato-punctate, 

 laterally dullish punctured, notauli represented by reticulations which 

 in addition give character to the prescutum and the posterior half 

 of the scapulae; carapace reticulate, the reticulation becoming almost 

 lost toward the apex of the segment, the latter with a nearly circular 

 foramen that apparently represents the similarly placed foramen in 

 the male, fore femora pale stramineous to yellowish, mid and hind 

 femora basally and apically pale yellowish, hind tibiae with a sub- 

 basal brownish mark and with the apex brownish to blackish; 



