4 PROCEEDINGS OF THE NATIONAL, MUSEUM. vou M. 



phase of the structure and life history of the Ichneumonidae is so 

 limited. But they are much more reliable as indicating relation- 

 ship than are the superficial resemblances of general form and color, 

 which, after all, constitute the only basis for grouping the various 

 genera of the Paniscini together and for ranking the tribe with the 

 Ophioninae. In respect to these biological characters OpJieltes and 

 Ahsyrtus are more closely allied to Ophion than are Paniscus and 

 Parahates. 



The egg of the true Paniscini, as is well known, is very large and 

 is attached externally to the body of the host by a pedicel which is 

 thrust through the skin of the host. In oviposition the egg itself is 

 not inclosed in the ovipositor but is attached to it by the enlarged 

 base of the pedicel exactly as is so frequently observed in specimens 

 of Polyhlastus. The ovipositor is attenuate at the apex beyond 

 a more or less distinct ventral enlargement. This type of ovipositor 

 occurs in all groups that produce stalked eggs: Cteniscini and Try- 

 phonini, as well as the Paniscini. 



The ovipositor of OpTieltes and Absyrtus, on the other hand, has 

 on the dorsal side near the apex a distinct notch; the egg, at least 



Fig. 1. — OVIPOSITORS of a. paniscus; &. opheltes, c. abstrtus 



in OpTieltes and probably in Ahsyrtus, is elongate oval without a 

 pedicel and in oviposition is inclosed within the ovipositor; and 

 the larva is internally parasitic. This type of ovipositor and vari- 

 ations of it is found in the Ophioninae, Lissonotini, Glyptini, and 

 Mesoleptini. All of these, so far as their biology is known, are 

 internal parasites. 



Genus EARRANA Cameron. 



Earrana Cameron, Spolia Zeyl., vol. 3, pt. 10, 1905, p. 119, pi. B, fig. 3. 

 Parca Morley, Rev. Ichn. Brit. Mus., pt. 2, 1913, p. 133; Fauna Brit. Ind., 



Hym., vol. 3, Ichn., pt. 1, 1913, p. 301, fig. 102. 

 Earrana Cushman, Philippine Journ. Sci., vol. 20, 1922, p. 564, fig. 6. 



An Oriental Mesostenine genus allied to Nematopodius. 



Genus CIDAPHUS Foerster. 



Cidaphus Foerster, Verh. Nat. Ver. Preuss. Rheinl., vol. 25, 1868, p. 149. 

 Plesiophthalmus Foerster, Verh, Nat. Ver. Preuss, Rheinl., vol. 25, 1868, 



p. 170. 

 Tetragonalys Morley, Rev. Ichn. Brit. Mus., vol. 2, 1913, p. 132; Fauna Brit. 



Ind., Hym., vol. 3, Ichn., pt. 1, 1913, p. 359, fig, 101. 

 Plesiophthalmidea Viereck, Bull. 83, U. S. Nat. Mus., 1914, p. 119. 



