272 GEO. H. HORN, M. D. 



less developed than in Brachypterus. To this species I have added 

 crinitus Murr., it is the male. 



Occurs from Canada to Tennessee and the New England States. 



C sericans Lee, — Oval, slightly oblong, usually testaceous, often with 

 head ami elytra piceous, surface feebly shining, sparsely pubescent. Thorax 

 a little more than half as wide as long, moderately densely punctured, sides 

 very narrowly margined, feebly arcuate, slightly sinuate posteriorly in the J, 

 Elytra longer than wide conjointly, scarcely shining, surface densely punctured. 

 Body beneath sparsely punctate. Length .06 — .08 inch; 1.5 — 2 mm. 



The sexual characters are in this species as in p)^w^o.tus, in fact it 

 was first observed that certain specimens here had a sinuate thorax 

 while others were arcuate, and that while all the former were 9 

 the latter were % . 



Occurs in California, rather widely distributed. 



C toipiistnlatus Payk. — Coarsely punctured, black; mouth, antennae, 

 legs and discoidal spot on each elytron rufous. Length .10 — .12 inch; 2.5 — 

 3 mm. 



The antennae of the males have the first two joints much broader 

 than in the female. 



I introduce this species here on the authority of several specimens 

 having been found near Boston. I do not know if it has obtained 

 permanent lodgement. 



AM ART US Lee. 



The characters of this genus are for the most part those of 

 Brachypterus, the differences are as follows : 



Two (Jorsal segments of abdomen exposed. Legs especially the 

 tibiae broader and stouter. Claws not toothed at base but with the 

 usual dilatation. Third tarsal joint deeply bilobed. Elytra not mar- 

 gined, epipleurse indistinct. (PI. Ill, figs. 3 — 4). 



The males have an additional abdominal segment belonging to the 

 dorsal series, but in great part covered by the pygidium and visible 

 only narrowly beneath. The pygidium does not diff"er notably in the 

 two sexes and care must therefore be exercised in separating them. 



It seems to me inexplicable why Mr. Murray allowed (. Strongylus?) 

 tinctus Mann., to remain in generic association with Brachypterus. 

 The claws of the species being well figured by him and not exhibit- 

 ing any basal tooth whatever in the sense in which it exists in 

 B. urticse, etc. Having admitted tinctus it is not easily understood 

 why Amartibs was not also joined. Synonymous with Amartus is 

 Brachyleptus Mots,, based on inaccurate characters given in a few 

 words. 



