LIST OF ILLUSTRATIONS XIII 



MORDENITE AND ASSOCIATED MINERALS FROM NEAR ChALLIS, CuSTER CoU.NTV, 



Idaho 



By Clarence S. Ross and Earl V. Shannon 



Pago 



1-4. Heulandite crystals from Challis, Idaho 10 



5-6. Analcite crj^stals from mordenite mass, Challis, Idaho 13 



On the genera of the Ichneumon-flies of the tribe Paniscini 

 Ashmead, with descriptions and discussion of related genera 

 and species 



By R. A. Cushman 



1. Ovipositors of a, Paniscus; b, Opheltes; c, Absyrtus 4 



2. First abdominal segment of Cidaphus; a, paniscoides ; b, occidentalism^ 5 



3. Protarchoides mandibularis Cushman, female 9 



4. Clypeus oi Neoprotarchus o<er Cushman 11 



5. Hypopheltes pergae Cushman, female 12 



6. Nephopheltes japonicus Cushman, female 17 



7. Brachial cell of Absyrtus; b, Basal vein; br, brachius; d, discoideus; 



dc, discocubitus; m, medius; n, nervulus; pn, postnervulus; sd, 

 subdiscoideus; S7n, submedius 18 



The blister beetle Tricrania sanguinipennis — biology, descrip- 

 tions OF DIFFERENT STAGES, AND SYSTEMATIC RELATIONSHIP 



By J. B. Parker and Adam G. Boving 



1. Tricrania sanguinipennis Say. Pupa with exuvium of sixth instar 



attached to posterior part of body 30 



