204 GC. M. EF. von HAYEK 
Agrypnus quedenfeldti nom. n. 
Tylotarsus fuscus Quedenfeldt, 1886 : 25. 
Agrypnus fuscus (Quedenfeldt) comb. n. [Junior secondary homonym of Agrypnus fuscus 
(Fabricius 1801).] 
LECTOTYPE (present designation). 4, Tylotarsus fuscus Qdf. Ogo. [Qued]; 
Ex Museum Quedenfeldt (MNHN, Paris). 
The published localities are ANGOLA and Quango R. [Kwango or Cuango] Coll. 
Mechow. The exact locality is unknown. 
Agrypnus rectangularis (Say) comb. n. 
Elater vectangularis Say, 1825 : 263. 
Colaulon vectangularis (Say) Arnett, 1952 : 118. 
The description is based on an unrecorded number of specimens ‘I found near 
the Rocky Mountains during the journey of Major Long’s exploring party’. From 
the account of this exploring party (James, 1823) the type-locality is probably 
eastern Colorado, between 20°20’N. and 40°40’N. and 104°W. and 105°W. As Say 
almost certainly retained the material he collected, it has presumably been lost 
together with the rest of his collection (see p. 279). Miss P. Schuyler reports that 
it cannot be found in the ANS, Philadelphia. Long’s material has not been located 
(see p. 278). 
The generic attribution is based on material standing over this name in the 
BMNH and MNHN, Paris. The BMNH series includes specimens with wings of 
normal length and others in which the wings are much reduced. Examination of 
series of specimens may show that a reduction in wing length, unaccompanied by 
a reduction in the length of the metathorax is an intraspecifically variable charac- 
teristic. However, until a neotype is designated, the identity of vectangularis Say 
remains unknown. 
For Adelocera curtus Le Conte which Arnett (1952 : 118) and Golbach (1968 : 198) 
regard as a synonym of rectangularis see p. 146. 
Agrypnus recticollis (Elston) comb. n. 
Lacon recticollis Elston, 1930 : 4. 
The description is based on an unrecorded number of specimens from AUSTRALIA; 
Queensland, Malanda (Dr E. Mjoberg). Elston states that the type is in the NR, 
Stockholm, but unless that museum received only one specimen, this statement 
cannot be accepted as a valid type-designation. Neboiss (1956: 12) records the 
presence of paratypes in the AM, Sidney. 
The generic attribution is based on the description and Elston’s statement that 
the species resembles vandepolli Candéze (= Agrypnus vandepolli, see p. 227). 
At first sight Lacon recticollis Elston appears to be a junior primary homonym of 
Lacon recticollis Fleutiaux, 1927. However, the two species are not congeneric as 
