14 M. H. Jekel on the Pollinosity of the Genera Lixiis and Larinxis. 



2. Col. Dilepida : having two layers of squamosity or tomentosity, 



one inferior, with or without denser markings, generally of a 

 pale imicolor hue (grey, ashy, or whitish) ; the other supe- 

 rior, less persistent, easier rubbed off, increasing or modifying 

 the coloration of the markings, when they exist, and filling 

 more or less the areas between the markings. 



3. Col. Paipalepida : ground-layer tomentose, following the same 



laws as in class 2 ; but superior layer being a pollinose trans- 

 udation, more or less deeply colouring the gi'ound, as well as 

 the ground-markings, when they exist. 



To complete the various modes in which the derm of 

 Coleoptera presents itself to the eye of the entomologist, the 

 nalced species (always exclusive of hair or pile) should form 

 the fourth class (or rather the first of all), viz., — 



4. Col. Alepida. 



As a supplement to the above observations, it will not be super- 

 fluous, I hope, to give a summary list of the piincipal species of 

 Larinus, whose habitat, food, even larva state and metamorphoses, 

 have been recorded by various authors ; a stimulus, I think, to 

 further researches on the part of such entomologists as may be in 

 the condition of making so desirable investigations. 



Lar. cynarw, Fabr. — Cynara cardunculus : Jacq. Duval, Genera 

 Coleopt. Eur., Ciu'cul. p. 40 ; South of France. — Thistles : Lucas, 

 Explor. Scient. Alger., Artie, iii. 442 ; Algeria, May and June. — 

 Cynara scolymus : Johannes Gistel, Die Mysterien der Insektenwelt, 

 1856, p. 82; Germany; &c. &c. 



Lar. cardui, Rossi. — Carduus nutans and Cynara scolymus : Gistel, 

 loc. cit. pp. 68 & 82 ; South Germany ; &c. &c. 



Lar. buccinator, Oliv. — Thistles : Lucas, loc. cit. p. 443 ; Algeria, 

 May, June ; &c. 



Lar. onopordinis, Fabr. — Onopordon acanthium : Gistel, loc. cit. 

 p. 444 ; Algeria. — Echiaops spinosus ; Lucas, loc. cit. p. 443 ; May, 

 June, Algeria ; &c. 



Lar. maculosus, Besser. — Lai'va in capitula of Echinops ritro, 

 vicinity of MontpeUier, June, August, and September ; Jacq. Duv. 

 Ann. Soc. Ent. Fr. 1852, p. 731 ; with an account of the variability 

 of coloration of that species, owing to the state of the plant (conf. 

 the opinion of Germar in Ins. Spec. Nov. p. 381). — Letzner, Catal. 

 of Coleopt. Larvae, in Zeitschrift fiir Entomologie, Breslau, 1855, 

 p. 43. — Laboulbene, Ann. Soc. Ent. France, 1858, p. 284 ; &e. &c. 



Lar. scolymi, Oliv. — Echinops spinosus : May-July, Lucas, loc. cit. 

 p. 443 ; Gistel, loc. cit. p. 82 ; &c. &c. 



