Auisotoma.] CLA.VIOORNIA. 33 



This species has been alternately introduced and omitted from our 

 lists on two or three occasions, and I here introduce it again with some 

 reserve, on a specimen named for me on the Continent as " pres rubi- 

 ginosa," (now in the possession of Mr. Mason), which must, I think, be 

 referred to this species, as it is certainly not sufficiently distinct to be 

 regarded as a new species. 



The species appears to be chiefly distinguished by having the thorax 

 more convex than the elytra, by the very fine and at the same time 

 diffuse punctuation of the thorax, arid the almost invisible punctuation 

 of the interstices of the elytra. 



A. nigrita, Schmidt. Oblong-oval, moderately convex, colour 

 variable, sometimes almost entirely pitchy black, sometimes quite light 

 ferruginous, and varying between these two extremes ; antennse reddish, 

 with the club dark brown ; thorax at base almost as broad as elytra, 

 narrowed in front, hind margin truncate, posterior angles almost right 

 angles, upper surface convex, very finely and not very thickly punc- 

 tured ; elytra rather long, more than twice as long as thorax, with 

 strongly punctured stria?, which are rather irregular towards suture, inter- 

 stices finely and very sparingly punctured ; legs ferruginous, posterior 

 tibiae short and straight in both sexes. L. 2 2f trim. 



Male with the posterior femora terminating in a large sharp tooth. 



By evening sweeping, under fir-trees; very local ; London district, not uncommon, 

 Chatham, Esher, Woking, Shirley, Reigate ; it has also occurred in. the New 

 Forest. 



A. silesiaca, Kr. A large and fine species; oblong-oval , very 

 convex, entirely ferruginous, except the club which is darker, sometimes 

 blackish, and the eye and apex of mandibles which are black : head 

 and thorax closely and very distinctly punctured ; thorax a little nar- 

 rower than elytra, with sides slightly rounded, base truncate, posterior 

 angles almost right angles : elytra twice as long as thorax, convex, with 

 strongly punctured striae, interstices very finely and closely but distinctly 

 punctured, so that they appear rather dull, alternate interstices with 

 rather closely set rows of somewhat large punctures. L. 4| if mm. 



Male with the anterior tarsi rather strongly dilated, posterior femora 

 simple with the apical angle rounded, tibiae slightly curved. 



A single specimen was taken by Dr. Sharp in July, 1866, at Inver- 

 cannich, at the foot of Glen Affrick, Inverness-shire : the species was 

 formerly introduced by Mr. Crotch into the British list as a large speci- 

 men of A. ovalis, named A. silesiaca by M. Schiodte : the two species, 

 however, differ entirely in sculpture, the elytra of A. ovalis being much 

 more finely punctured ; the latter insect is moreover less elongate and 

 more ovate, and has the club of the antennse. longer and less stout. A. 

 silesiaca somewhat resembles A. furva, but has longer posterior legs 

 and no cilia at the margins of the elytra, besides being different in other 

 respects. 



VOL. III. D 



