418 HYMENOPTERA. 



reticulated. Abdomen shining, impunctate. Legs stout ; the coxae and femora shining, 

 punctured, covered with moderately long fuscous pile ; the tibiae and tarsi opaque, 

 closely covered with rufo-fuscous pile. 



In the male the thorax laterally is almost entirely rugose, and the front tarsi are 

 testaceous. 



V 3. CenOCGBlillS Chontalensis. (Tab. X VII. figg. 12, $ ; 12 «, mandibles.) 



Bufo-testaceus, antennis, capite pedibusque nigris ; terebra quam corpus longiore ; alis fuliginosis. $ . 

 Long. 10 millim. ; terebra 12 millim. 



Hab. Nicaragua, Chontales (Janson). 



This insect is very closely related to C. nigriceps ; it differs as follows : — The ovipositor 

 is much longer ; the head is much longer and more narrowed towards the mouth ; the 

 thorax is not so strongly punctured ; the antennae and head are entirely black ; the 

 abdomen is longer than the head and thorax united (in C. nigriceps it is shorter than 

 these parts united), and also narrower (not bulging out in the middle) ; and the 

 projection in the frontal depression is larger. 



4 



4. Cenoccelius pulcher. (Tab. XVII. fig. 10, <s .) 



Luteus, vertice, antennis, abdominis apice, tibiis tarsisque posticis nigris ; alis flavo-byalinis, apice fumatis, 



stigmate flavo. c? . 

 Long. 8-5 millim. 



Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 



Antennae longer than the body, the flagellum almost bare. Face rugosely punctured, 

 covered with a fulvous pile ; vertex shining, impunctate. Mesonotum shining, obscurely 

 punctate ; mesopleurae and sternum shining, a row of large foveae at their points of 

 junction ; metathorax reticulated. Abdomen longer than the head and thorax united, 

 shining, the extreme base obscurely punctured. The cloud in the wing commences at 

 the stigma ; the recurrent nervure is scarcely interstitial, being almost received in the 

 second cubital cellule ; the second cubital cellule is 5-angled and is longer than broad. 



^ J\5> Cenoccelius ornatipennis. (Tab. XVII. fig. n, $ .) 



Luteus, antennis, capite, sterno, pleuris, coxis, trochanteribus, apice tibiarum abdominisque apice nigris ; alis 



flavo- hyalinis, fusco-bifasciatis, nervis flavis, stigmate nigro. $ . 

 Long. 7 millim. ; terebra 8 millim. 



Hab. Panama, Bugaba (Champion). 



Antennae about the length of the body ; densely pilose. Head (especially the face) 

 densely pilose ; face bearing large separated punctures ; front deeply and widely exca- 

 vated, the hollow with a distinct border and with a keel in the centre running down 

 from the ocelli ; mouth, mandibles (except at the apex), and palpi yellow. Thorax 

 above rugosely punctured, the punctures running into reticulations on the metanotum ; 



