SERRIGER.—THANASIMUS. 147 
SERRIGER. 
Serriger, Spinola, Mon. i. p. 170 (1844); Lac. Genera Col. iv. p. 441. 
A genus about which there is room for a good deal of doubt. Lacordaire had not 
seen the unique type, and makes the remark that the figure in no way conforms with 
the description. I do not, however, see that there is any important discrepancy. 
I have already shown that 8. coffini, White, is not congeneric with this type. 
Lacordaire mentions another species which he had seen, but without naming or 
describing it. 
1. Serriger reichei. 
Serriger Reichei, Spin. loc. cit. p. 1717, t. 12. fig. 3. 
Hab. Mexico}. 
THANASIMUS. 
Thanasimus, Latreille, Gen. Crust. et Ins. i. p. 270; Lac. Gen. Col. iv. pp. 445, 446 note 2; Gorh. 
Cist. Ent. 1876, p. 73. 
The typical species of Thanasimus (7. e. species of the T. formicarius type) are con- 
fined to the northern hemisphere; but the tropics, and even temperate parts of the 
southern latitudes, produce species which at present cannot well be separated. The 
genus, however, is not numerous in species. In the Munich Catalogue forty-four 
are recorded; but at least ten of these have to be eliminated, the Chilian species 
belonging to Epiclines or Dereutes, Chevr. 
1. Thanasimus dubius. 
Clerus dubius, Fabr. Syst. El. i. p. 280°. 
Thanasimus ruficeps, Spin. Mon. i. p. 189’, t. 14. fig. 2. 
Thanasimus dubius, Klug, Mon. p. 292; Lec. Syn. p. 24. 
Hab. Nort America !?, United States—MeExico (coll. Gorham). 
A specimen in my own collection is all I have seen of this insect from Central 
America; there is, however, no improbability of its occurring there. 
2. Thanasimus nigriventris. 
Thanasimus nigriventris, Leconte, Proc. Ac. Phil. 1861, p. 351%. 
Hab. Norra America, California’, Vancouver’s Island (coll. Gorham).—MExico, 
Yolotepec (Sallé) ; Guaremana, San Gerdnimo (Champion). 
Mr. Champion met with eight specimens of this insect at San Geroénimo. It may be 
distinguished from 7’. nubilus, Klug, to which it is very nearly allied, by the abdomen 
being black, and by the elytra not being serially punctured at their bases. When in 
fine condition the whole of the apex is covered with grey pubescence ; but most of the 
specimens I have seen are so worn as to show only two indistinct wavy lines of grey 
hairs across the elytra. 
U2 
