462 HYMENOPTEEA. 



punctured ; the abdomen with the punctuation much less coriaceous, more scattered, 

 and shallower. Basin of face shining, transversely striated ; the sides densely covered 

 with white hair. There is a transverse keel above the face, the keel being prolonged 

 in a half-circle so as to enclose the lower ocellus. Above the ocelli are four large, 

 shining, impunctate tubercles ; the inner pair blue, and nearer each other than are the 

 lateral ones from them. The posterior lobes of the metathorax large, coarsely punc- 

 tured, and divergent. Abdomen a little longer than the thorax ; the third segment 

 notched and raised in the middle, projecting on either side of the notch into a broad 

 distinctly separated lobe, the notch wider than the lobes, the latter shining and im- 

 punctate ; the foveal groove wide and deep ; the fovese large, deep, blue, roundish, and 

 closely set, although few in number. Antennae green, black at the apex. Tarsi 

 blackish. Wings hyaline, slightly infuscated in front. 

 Length 8 millim. 



Hah. Guatemala, Capetillo {Champion). 



A stout and broad insect. The peculiar tubercles on the vertex clearly ally it to 

 C. faceta, Aaron, from Colorado ; but that species has the abdomen metallic scarlet 

 and gold, with ruby reflections, forming a striking contrast to the colour of the thorax. 



iii. Apical margin of the third abdominal segment with three teeth. 



4. Chrysis parvula. (Tab. XX. figg. 6, 6 a.) 



Chrysis parvula, Eabr. Syst. Piez. p. 176; Dahlbom, Hymen. Eur. ii. p. 191, t. 10. f. 106; Norton, 

 Trans. Am. Ent. Soc. vii. p. 242; Aaron, Trans. Am. Ent. Soc. xii. p. 231, t. 8. ff. 46 & 47 \ 



Chrysis carinata, Say, Ann. Macl. Lye. i. p. 82 ; Complete Writings, i. p. 384. 



Chrysis tridens, Lep. de St.-Earg. & Serv. Encycl. x. p. 495 (Pyria) ; Brulle, Hist. Nat. Ins. Hymen, 

 iv. p. 46. 



Chrysis mucronata, Brulle, Hist. Nat. Ins. Hymen, iv. p. 45; Norton, Trans. Am. Ent. Soc. vii. 

 p. 242. 



Chrysis S-dentata, Dahlbom, Dispos. Hymen, p. 15. 



Chrysis virens, Cresson, Proc. Ent. Soc. Phil. iv. p. 309. 



Hab. Noeth Ameeica, United States 1 . — Mexico 1 , Northern Sonora (Morrison), 

 Presidio (Forrer); Guatemala, El Reposo 800 feet, San Geronimo (Champion); 

 Nicaeagua, Chontales (Janson) ; Panama (Boucard). — South Ameeica, Brazil. 



A widely distributed and variable species. 



5. Chrysis selenia. 



Chrysis selenia, Costa, Ann. del Mus. Zool. del Univ. di Napoli (Anno ii. 1862), 1864, p. 67, 

 footnote no. 4 \ 



" C. angustata, ano tridentato, scutello conico, capite thoraceque crasse punctatis ; viridis, abdominis dorsi 

 segmento primo macula minuta indeterminata, secundo margine baseos coarctato maeulaque postica 

 transverse semilunata, tertio margine baseos in lineam mediam posterius continuato margineque postico 



