1854.] 107 



B. Mesosternum transversum ; coxae intermediae distantes : 



a. Mesosternum bifidum ; os prosterno obtectum ; 



Labrum mandibulaeque libera : (ligula dilatata) . Trogoderma. 

 Labrum solum liberum ; 



Fossulae antennales submarginales ; corpus pubescens . Cryptorhopaluivi. 

 Fossulae antennales marginales ; corpus squamatum . Anthrenus. 



b. Mesosternum integrum ; 



Tibiae anticae tenues ; corpus longe pilosum . . Apsectu. 

 Tibiae anticae latiores, os obtegentes : corpus glabrum . Orphilus. 



Dermestes Linn. 



a. Abdominis articulis tertio quartoque maris medio penicillatis. 



1. D. marmoratus, oblongns, niger, pubescens, capite thoraceque fulvo- 

 variegatis, hoc punctis tribus ad medium cinereis ornato, elytris cinereo- fulvoque 

 variegatis, macula magna subhumerali oblonga (angulis prolongatis) cinerea ; 

 infra candidus, segmento abdomis ultimo lateribusque nigris, illo basi albo-macu- 

 lato, pedibus nigris, femoribus annulo albo ornatis, antennis piceis. Long. -47. 



Say, Journ. Acad. Nat. Sc. 3, 197. 



Nebraska and Texas. The largest of our species, and very distinct by the 

 large subquadrate cinereous spot just behind the base of the elytra: the outer 

 margin of the spot is prolonged along the side of the elytra, and extends on the 

 humerus : the inner anterior angle is prolonged towards the suture, while the 

 inner posterior an^le is prolonged backwards; excluding the prolongation, this 

 spot is about one half longer than wide, and the inner prolongation is small 

 compared with the outer portion, which is one third the length of the elytra : in 

 the next species the inner prolongation is large, so that the mark appears like 

 an irregular subbasal fascia, and the spot itself is not longer than wide. 



Erichson (Ins. Deutschl. 430, note) gives as synonyms D. caninus Germ., and 

 D. tesselatns Herbtt. This view appears to me entirely unfounded. The true 

 marmoratus Say, seems not to be known to the German entomologists. By in- 

 advertence Erichson also quotes the Trans. Am. Phil. Society, for the original 

 description of Say. 



2. D. Mannerheimii, oblongus, niger, pubescens, capite thoraceque fulvo- 

 variegatis, hoc punctis cinereis tribus ornato, elytris cinereo variegatis, fascia 

 subbasali extus paulo dilatata cinerea, subtus candidus, abdominis lateribus 

 segmentoque ultimo nigris, hoc basi albo-notato, pedibus nigris, femoribus annulo 

 albo ornatis, antennis obscure ferrugineis. Long. -31 '37. 



Dermestes marmoratus\ Mannerheim, Bull. Mosc, 1843, 258. 



San Diego and San Francisco, California. The small size given by Count 

 Mannerheim, enables his specimens to be referred to this species : its characters 

 are sufficiently pointed out above. The spot or fascia extends one fourth the 

 length of the elytra. 



3. D. f a s c i a t u s, oblongus, niger, pubescens, capite thoraceque fulvo varie- 

 gatis, elytris lineolis transversis cinereis fasciaque pone basin lata irregular! 

 ornatis ; infra candidus, abdominis lateribus segmentoque ultimo nigris, hoc basi 

 albo tripunctato ; antennis pedibusque nigris, femoribus cinereo annulatis. Long. 

 3 35. 



New Mexico, Mr. Fendler : also allied to the two preceding, but the fascia 

 of the elytra is not connected with the base, is not dilated externally, and hardly 

 even touches the scutel ; the latter as in D. marmoratus and Mannerheimii is 

 cinereous. 



4. D. nu bil u s, oblongus, niger, pubescens, capite thoraceque cinereo fu I voque 

 variegatis, elytris cinereo plus minusve variegatis, scutello densius pubscente ; 

 infra a lbidus, abdominis lateribus segmentoque ultimo nigris, hoc basi albo bipunc- 

 tato, femoribus nigris albo annulatis, antennis obscure ferrugineis. Long. *3 35. 



Say, New Ins. of Louisiana, collected by Joseph Barabino, (1832.) 



Dermestes dissector Kirby, Fauna Bor. Am. 115. 



Texas, collected by Lieut. Haldeman, and by the Boundary Commision ; also 



