140 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 95 
numerous differences in size, and especially proportion, bonaparti 
averaging slenderer throughout. The number of teeth in the abdom- 
inal combs of the male falls within the extremes for abbreviatus, some 
having one more than the maximum and others one less than the 
minimum. In the female they average fewer in number in practically 
all the combs. 
MEASUREMENTS OF RHOPALOCERAS LATICEPS BONAPARTI 
Male Female 
Structure Sauce BUTT UGH" TIGHTER] TUTTE ALT 
Length Width Length Width 
BOGAN NN CT ANNE BROS SEV DO S108) | base aaees aly 
NET G6h CLARA ad 2 2) Sn EDL AN CRI ROLLE RO 1.08 1. 58 1. 28 1.97 
TIPTOLH OL AKA eet ey Sie On eR NURS Ect AO RT 0. 33 1.02 0. 44 1.17 
WM eSOGN OT aX i SOs Wiig MAME NUL SON Ee COUN Nees eS 0. 37 1.15 0. 41 1. 34 
DY KeXik2 9.9 a0) chs apap acta Onis ed URLs Ne URN GI LANL ag bY IN NANDA A 0. 19 1. 24 0. 22 1. 58 
HAND) LO TNO TE MMaterial Ma DAs wee INL TAO ONO ar 1. 39 1. 34 2.17 1. 58 
DsNb oh) 000: ¥ SVU RAMA ene ROE MERLE AES RAIMA Ue WCRI AD fal eh BONN an 0. 70 0. 115 0. 45 0. 097 
PAF ATIOTS eee a AN ae oe La AR 0. 24 QEATG 3 | eenaaits RU aay 
Fir Ommeres titereassleial toc 0 9 «Nos MRL VE Ve ORE a ee 0. 22 QTE ORE ACNE 
Male Female 
Left Right Left Right 
17 16 17 16 
14 13 16 15 
11 12 16 15 
9 10 11 ln 
4 4 5 5 
RHOPALOCERAS species(?) 
A single male of this genus was taken on Crypturellus garleppi 
affints, collected by the author at Todos Santos, Rio Chaparé, Bolivia. 
The specimen is in poor condition and has the genital armature 
mutilated, and so it is impossible to describe or figure it accurately, 
although it seems to be an undescribed form. 
Genus HEPTAPSOGASTER Carriker 
HEPTAPSOGASTER MANDIBULARIS Carriker 
Ficure 11, @ 
Heptapsogaster mandibularis CARRIKER, Lice of the tinamous, p. 116, pl. 16, figs. 
2-2b, 1936. (Host: Crypturellus t. tataupa.) - 
The original description and figures given for this species are 
full and correct, with exceptions that follow and that now prove 
