444 HYMENOPTEEA. 



DRYINUS. 



Dryinus, Latreille, Hist. Nat. Ins. xiii. p. 228 (1804) [sec. Forster, Hymen. Stud. ii. p. 90 

 (1856)]. 



This genus is apparently more numerously represented in tropical than in temperate 

 regions. 



The group of D. maculicoknis. 



Vertex depressed ; occiput concave ; ocelli in a triangle ; eyes converging in front ; 

 third joint of the antennae double the length of the first ; third joint of the anterior 

 tarsi double the length of the fourth ; prothorax above bluntly keeled, longer than 

 the mesothorax ; parapsidal furrows obsolete ; body rather long, narrow. 



1. Dryinus maculicornis. (Tab. XIX. fig. 5.) 



Niger, antennis testaceis cum articulis 5°-7 m nigris, clypeo mandibulisque albis, tarsis abdominisque apice 



testaceis. tf $ . 

 Long. 6 millim. 



Hob. Panama, Bugaba 800 to 1500 feet, Volcan de Chiriqui 2000 to 3000 feet 

 (Champion). 



Antenna? with the apical five joints of the flagellum thicker than the basal joints; 

 joints 7-9 brownish beneath ; the basal joint white on the lower side, fuscous above. 

 Head closely punctured, covered (especially along the eyes) with long white hair ; the 

 clypeus in the middle and the tips of the mandibles piceous ; palpi fuscous. Thorax 

 covered with rather long white hair ; the pro- and mesothorax closely and somewhat 

 strongly punctured, the former laterally, on the lower side, finely, longitudinally 

 aciculated ; metanotum coarsely, longitudinally striolated. Abdomen scarcely so long 

 as the thorax ; the basal three segments finely aciculate, the apical segment almost 

 impunctate. The legs are sparsely covered with white hair ; more or less black above, 

 the front part white at the apex, the femora and tibiae more or less brownish beneath ; 

 the coxa? and anterior trochanters are obscure brownish-testaceous. The wings are 

 milky-white at the extreme base between the transverse basal nervure and the base of 

 the stigma (which is white), and fusco-hy aline in front of the stigma. 



2. Dryinus alticola. (Tab. XIX. fig. 6.) 



Niger, antennarum articulo 5° tarsisque testaceis ; alis fuscis, fascia medio apiceque hyalinis. $ . 

 Long, fere 6 millim. 



Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet [Champion), 



Head closely, longitudinally, and rather strongly punctured ; vertex scarcely 

 depressed ; a narrow keel runs down from the ocelli ; palpi whitish. Prothorax finely 

 longitudinally striated ; the posterior part raised into a rather long hump, which is 

 rather sharp in the centre. Mesothorax closely and rather strongly punctured; 



