436 HYMENOPTERA. 



Subfam. SCELIONINJS. 



Seventeen genera have been formed to contain the European species of this sub- 

 family ; four only of these have been recognized in America, namely Alaptus, Cosmo- 

 coma, Anaphes, and Scelio, but others undoubtedly exist there. Many of the species 

 are egg-parasites. 



SCELIO. 



Scelio, Latreille, Hist. Nat. Ins. xiii. p. 226 (1804). 



l. Scelio erythropoda. (Tab. XVIII. fig. 16, $ .) 



Niger, pilosus, rugoso-punctatus, vel scapo antennarum pedibusque rufis ; alis flavescenti-hyalinis, nervis 



testaceis. $ . 

 Long. 5|-7 millim. 



Hab. Guatemala, Cerro Zunil 4000 to 5000 feet, Volcan de Atitlan 2500 to 3500 



feet (Champion) ; Panama, Caldera in Chiriqui 1200 feet (Champion). 



Head and thorax roughly rugose all over ; abdomen closely covered with longitudinal 

 striations, except at the junction of the segments, this part being smooth and shining, 

 the sides also striolated. Mesonotum without sutures. Antennae as long as the head 

 and thorax together ; second joint a little curved, as long as, if not longer than, the 

 third ; the remaining joints are short, being broader than long, and becoming thicker 

 towards the bluntly conical apex ; the middle joints are produced a little on the lower 

 side; the apical joints are closely united. 



TRIMORUS. 



Trimorus, Forster, Hymen. Stud. ii. p. 101 (1856). 



Trimorus is distinguished from the other genera of Scelioninae with broad basal 

 segment to the abdomen (the other segments being of nearly equal size) by the post- 

 scutellum bearing spines, and by the mesonotum being divided into three arese by the 

 sutures of the parapsides. 



In these respects the species here described may be regarded as a Trimorus ; but, as 

 Forster's description of the genus is so laconic, I think it quite possible it may be proved 

 hereafter to belong to a different genus. 



Trimorus is only known from Europe. 



1. Trimorus luteus. (Tab. XVIII. fig. 20.) 



Luteus, capite, antennis, abdominis basi et apice late nigris ; alis fumatis, basi late flavescenti-byalinis. $ . 

 Long. 5 1 millim. 



Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 



