MOlUi.VN 
n. Aiiti'iinae not annulate. Ki^lit and ninl li al)(inniinal Kafrjh.s „f I'c- 
inalo with lat('ro-caudal anjilns rounded and rarely .^howinn any trace 
of keel. 1' ('iiioi a wit li ('.\t ernal laet's broadly washed with brown, this 
often weak; iidernal faces similarly washe.l with brown, this weaker and 
less exl('nsiv('. 'Fibiai' with vcadral surface normally very weakly tingl- 
ed with brown; this, wIk-ii conspicuously ileveloix'd, (■xtendin”; to near 
dist.al ('.\t(M-mity. Size; av(>ra}>;inf-- small, S.2 to ]J.7'‘ mm. (West 
caraibea new s|)ecies 
BB. .Vntenmu' annulate. kdf>hth and luidh abdominal terjiites of 
ieinale with lat ero-eaiidal angles roundly anf>ulafe produced and show- 
ing;' veiy weak keels. hVmora wit h median ixu't ion of external face's 
suftusc'd with brown, corn'spond in i)ortion of intei'iial faces usually with 
a sultusc’d |)at('h ot this color. ’^I'ileiae weakly linked with brown jeroxi- 
mad. Size av('ray,in^ larjiic'r, I I .d to 12..') mm. (South .XiiK-rica.) 
jjaneirensi.s (l)oluti) 
Euborcllia ambigua (Borelli) (I’lalc' AIX, figures I, 2 and d.) 
I'.KK). A iiisoldhis luiiiiiijud Borelli, Ihill. Mus. Zook ,\nal. comp. I niv. 
lorino, \xi, no. odi, )>. d. [9 ; Hi" •lesus Maria, in mangrove I'egion, 
('osta Bica.l 
M;t.ii;i do ('o.sl.-i Kieu, I 9, |A. X. S. I*. I. 
BlickcH 's I Initiiiiock, Aliuiiii, II, 2S ;iii(| III, G, IttlG, 
(M. II('l);u(l ; ill iiui.iiLfiovc. .s\v;uii|)), def, 9, 1 .i'lN'., [1 l(‘l>;ii<l 
('lii.l. 
’The liil,h('id<) iiiikiiowii iiuiJe ,s('.\ of tlii.s species iiiay la' readily 
i'ec()j>;niz('(l By llu^ fif>;ur('s tuid tlu' clui.rti.clt'i-s jj;iv('ii in tiu' key. 
In timbisexiuil features it tigret's closely with Hort'lli’s juh'ciutife 
description of the female. W'e would note, howc'vt'r, that the 
pronotuni, though wddeninjt; evenly eaudtid, is then' not :is wide' 
as the width of tlu' lu'ad across the ('yc's. Boi’clli hits stilted 
“Pronoto . . . i)osteriornient(' di liirglu'zzii ucuiih' ii (pu'llii 
d('l capo.” 
.\t. the coastid lociilitii's wlu're' it, Inis la'i'ii found tlu' s|)ecics 
is known only from niiuig'rovi' swiinijis. It will prohiihly he 
found to hav(' a wide (list lilmt ion in tlnit eii\ironnienl , when 
such situations, ditlicult of access and usuiilly Inirhoring: swarms 
of nios(ituitoes, Inive been more' ('xtt'iisivi'ly and ciirc'tiilly e.x- 
a mined. 
‘’Length of body, including forceps, of this largt'sl specimen, Iroin Porto 
Ibcu, 13.5 mm. 
TR.\NS. AM. ENT. .SOC., .XUVll. 
