ODYNERUS. 221 



(baud postico) luteo-limbato ; abd. segrnentis, lo, 2° Inteo-marginatis ; 



alis ferruginescentibus, apice infascatis. — Longit. 13 min. 

 9 . Clypeo nigro, apice bicarinato, subemarginato. 

 % . Clypeo elongato, emarginato, luteo, utrinque nigro-inarginato ; anten- 



narum scapo supenie nigro vel obscuro unoino luinuto, rufo. 



Oilijn. subpetiolatus Sauss. Vespides, I, 162, 43 (1852).— Ill, 227, £ %. 

 Odyn. ooarctatus Sauss. Gay's Hist, fisica de Chile, Zool. VI, Suppl. p. 

 565, 7, 9 (1852).i 



Bab. Chili. 





51. O. tuberculatlis Sauss. — Major quarn 0. arcuatus eique formis 

 affinis, sed thorace latiore ; abd. prinio segmento paulo latiore, supra 

 postice sulco partito, et ante sulcum in cantho transverso tuberculo 

 parvulo instructo; secundo segmento nee supra nee subtus tuberculato; 

 post-scutello tantum in apice truncate Niger, rugulatus, velutinus, 

 hirsutus. Antennis ferrugineis, apice nigris ; ore, pronoto, tegulis rufis ; 

 lineola post-oculari, pronoto medio frequenter, post-scutello et abdominis 

 segmentorum l 1 , 2' margine, luteis ; alis ferrugineis, apice fusco-viola- 

 scentibus. — Longit. 16 mm. 



9 • Clypeo nigro, piriformi, satis planato, bicarinato, apice truncato, vel 



subemarginato. 

 £ . Clypeo elongato, paulura bidentato, luteo ; antennarum uncino apicali 



nigro; post-scutello nigro. 



Odynerus tuberculatus Sauss. Vespides, I, 163, 50 (1852). — Gay's Hist. 

 fis. de Chile, Zool. VI, Suppl. 564, 6, 1852.— Vespides, III, 228. 2 



This species differs from 0. humeralis in its smaller size; its 

 antennae % terminated by a sharp black hook, not by a rufous 

 spiral or a blunt hook. The clypcas is more narrow; in 9 

 flattened, bicarinato ; in % not so sharply bidontatc. 



Hab. Chili. 



52. O. tulierculiventris' Spin. — Minutus, 0. arcuato formis simil- 

 limus; sed pronoto lato, angulato ; post-scutello baud truncato. postice 

 angulato, vel arcuato; abdominis secundo segmento subtus basi tuber- 

 culo acuto instructo. Niger, velutinus ; antennis, tegulis et pedibus 

 rufis ; bis basi nigris; macula frontali, punotulo post-ooulari margine 

 antioo, macula subalari, postsoutelli et abd. segmeutorum l 1 , '-, margiue 

 postioo, luteis. Alis subbyalinis, veuis ferrugineis, apice griseo. — Longit. 

 8 mm. 



1 This supplement appeared after my book 1 on Vespides ; and hence I 

 preserve the name sUbpetiohtus as being tbo older. 



2 In this paragraph of Vol. Ill, the affinities are not well given. 



