274 M. H. Jekel — Tentamenta EniomoTofj'ica. 



pitchy parts (rostrum, elytra, and body underneath) are either dark 

 or light brown. 



The maximum amount of squamulation (which is whitish or 

 flavescent) consists of two intra-lateral lines on the disk of the 

 thorax, two entire longitudinal lines on each elytron (one dorsal, the 

 other lateral), with the interspaces, especially at the base and apex, 

 densely irrorate. But in many specimens the squamulation is re- 

 duced to a short basal line on either side of the thorax, and to two 

 short basal and apical lines on the elytra. The lateral line is gene- 

 rally most persistent in intermediate specimens. Lastly, other 

 individuals are quite destitute of squamosity. 



The punctures of the thorax also vary extremely. 



Its size varies between 2-1- and 3^ millim., some being hardly 

 longer (though broader) than Tycli. picirostris ; the largest equalling 

 Tych. venustus. This variation of size occiu's indiscriminately in 

 every country in which it is found, viz. South France (MontpeUier, 

 Marseilles, &c.), Sardinia, Sicily, Crete, AnatoHa, Syria, Caucasus, &c. 



The synonymy stands as follows : — 



Tt/chius horclei, Brull^, Exp6d. Scient. Mor(5e, Articul^s, p. 246 (1832), 



1834. 



squamosus, Seh. Gen. et Sp. Curcul. iii. p. 419, 1836. 



aJboguttatiis, Redtenb., Eussegger, Reise, i. p. 988, 1843. 



mtramargmalis, Hochhuth, Bull. Soc. Imp. Nat. Mosc. 1847, ii. 



p. 549. Since recognized by the same as 

 squamosus, var. Caucasicus, Hochh. loc. cit. 1851, i. p. 94. 



The correct and minute description by Hochhuth helj)s greatly in 

 the recognition of the species, when found in our western countries. 



Through its immersed scuteUum, this group should be ranged near 

 Tanyrhynclms and Trachodes, waiting the production of a general 

 classification based upon natural aifinities and embracing the various 

 forms of the whole world. This gigantic work, undertaken by Prof. 

 Lacordaire's master hand, we most anxiously expect. 



Tychius amoenus, Say, Sch., possibly belongs to this group. 



Sttphlotychiijs, Jekel. 



This group should also be transferred to the filibdi vision Erirhi- 

 nides exscutellati of Schonherr. It bears a certain likeness to the 

 Styphlidce and to Tracliodes, 



Besides its type, Tychius scabricollis, Rosenh. (die Thiere Anda- 

 lusiens, p. 280)= a speratiis, Dej. Catal. =nitidirostris, Dufour in Htt., 

 which is widely distributed in South-western Europe, I have seen a 

 few more species, which unfortunately are not at the present time 

 within my reach. 



