of Fossorial Hymenoptera. 55 



the metathovax strongly punctured, and with a triangular 

 patch of silvery pubescence at its base ; the wings with similar 

 fascife as in T. cycloce/plialus-^ the tegular obscurely testaceous ; 

 the anterior and intermediate femora, tibife, and tarsi ferru- 

 ginous ; the intermediate femora more or less fuscous above ; 

 the posterior pair fen-uginous at their extreme base and apex ; 

 the petiole and swollen part of the segment, except its apical 

 margin, black. 



This is perfectly distinct from all the species with which I 

 am acquainted ; its long attenuated form alone would di- 

 stinguish it ; but its punctui'ed metathorax, without striation, 

 at once sej^arates it. 



Hah. E-a. 



Genus Ampulex, Jurine. 

 Ampulex trigonopsis. 

 Female. Length 7f lines. Black : head and thorax with 

 an olive-green pile ; wings maculated. Head : clyjjeus covered 

 with silvery pile, sharply carinated, and produced in front into 

 an acute tooth ; covered with somewhat oblong punctures ; 

 those on the pro- and mesothorax are similar ; the meta- 

 thorax with a central and on each side four longitudinal 

 carinas, three of which converge inwards ; between the carinse 

 it is transversely striated ; the posterior lateral angles dentate ; 

 wings hyaline ; the nervures black ; the anterior margin of 

 the superior wings fuscous ; a fuscous cloud covers the mar- 

 ginal, two submargiual cells, and the apex of the third dis- 

 coidal cell ; the legs have an olive silky pile. Abdomen very 

 smooth and shining, with a pale silvery pile over the apical 

 margin of the second segment, and a' 

 the apical segment rufo-testaceous. 



Family Larridae. 



Genus Larrada, Smith. 



Larrada fasciata. 



Female. Length 4^ lines. Black ; pilose. The face and 



clypeus silvery, only observable in certain lights ; the tips of 



the mandibles ferruginous. Thorax : the mesothorax with 



pale golden pile, on the rest of the thorax it is silvery, and 



on the metathorax brightest ; that on its tnmcation very dense 



and bright ; wings liyalinc ; the anterior pair with a })ale 



fuscous fascia crossing them from the stignui, its width being 



