I06 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Ill 



anterolateral aspect of base and i large seta on lateral aspect of base or 

 farther forward on undivided portion of urogomphus. 



Caudal notch (en) large, U-shaped, wider than long; anterior mar- 

 gin almost straight ; wide posteriorly, but somewhat narrowed by tips 

 of inner prongs. 



Tenth abdominal segment with approximately 25 fine setae in ir- 

 regular whorl; anal aperture T-shaped, with transverse portion to 

 the rear. 



Material used in study. — Examination was made of 15 specimens, 

 all from Denmark. Some of the material had been used by K. L. 

 Henriksen in his description of the species. Specimens examined 

 are deposited in the U. S. National Museum and the Canadian na- 

 tional collection. Notes are given below concerning 2 reared speci- 

 mens for which the larval exuviae and associated adults were available. 



i; Dyrehaven, Denmark; Sept. 8, 1895; under bark of oak in pupal cell; E. 



Rosenberg. (U.S.N.M.) 

 I ; Denmark; August 1915; in oak; J. P. Kryger. (U.S.N.M.) 



LUDIUS BIPUSTULATUS (Linnaeus) 

 Figures 14, c; 22, d, f 



Elater bipustulatus Linnaeus, Systema naturae, ed. 12, vol. i, p. 652, 1767. 



Corymbites bipustulatus (Linnaeus), Bose, Die Kafer Deutschlands von Valen- 

 tin Gutfleisch, p. 363, 1859. 



Selatosomus bipustulatus (Linnaeus), Seidlitz, Fauna Baltica, ed. 2, p. 171, 

 1888. 



Corymbites (Calambus) bipustulatus (Linnaeus), Schenkling, Coleopt. Cat. 

 (ed. Junk), vol. 2, pt. 88, p. 385, 1927. 



The only larva of this European species that was available for 

 examination was collected under apple bark at Drochtersen, Germany. 

 DuBuysson (1888, p. 15) refers to the larva as being exclusively 

 carnivorous. Superficially it resembles larvae of the Ludius rotundi- 

 collis group. 



The principal diagnostic characters of this species follow : Dorsum 

 distinctly patterned (fig. 22, /) with dark brown patches over a pale 

 yellow background; caudal notch large, U-shaped; urogomphi {ur, 

 fig. 22, d) bifid, inner prongs much larger than outer prongs; tips 

 of prongs bluntly rounded ; nasale unidentate ; proxistipes and disti- 

 stipes not distinct; presternum of prothorax divided into 3 pieces; 

 without spinelike setae on episterna of mesothorax and metathorax; 

 mediotergites of abdominal segments with prominent setae unpaired 



