H. C. FALL 
81 
suggestion, but content myself with presenting the facts as I now 
see them, pending a fuller knowledge of the European species of 
Malachius and allied genera. 
ATT ALUS Erichson 
The nondescript forms in this genus in our collections are very 
numerous, and a complete revision is much to be desired. This 
should not be so very difficult to one who has accumulated the 
necessary material, but there may be some puzzling relationships 
to solve — especially in the vicinity of rufomarginatus and lecontei 
{bnsalis LeConte). At the risk of further complicating matters 
the following descriptions of twelve of the new species in my own 
cabinet are presented. They seem to be abundantly distinct 
from any of our previously described forms, nor am I able to 
identify any of them by Mr. Champion’s recent paper on the 
Mexican and Central American species. I am not yet prepared 
to give a revised table of Attains, but the new species here made 
known may be separated among themselves as follows. 
Table of Species 
1. Elytra entirely black 3 
Elytra not entirely black 2 
2. Elytra rufo- testaceous, each with subapical and sometimes basal spot, black. 
serraticornis 
Elytra black in apical half, basal half yellow dimidiatus 
Elytra black with tips red; head and thorax red semirubidus 
Elytra black with side margins, tips, and suture (except basally) rufo- 
testaceous *. demissus 
Elytra black with side margins and suture very narrowly and indefinitely 
paler — tips not pale dilutimargo 
Elytra black with very narrow yellow lateral and apical margins, head 
tuberculate tuberculifrons 
3. Head and thorax rufo-testaceous atripennis 
Head, at least, and generally the thorax largely black 4 
4. Upper surface nearly glabrous glabrellus 
Upper surface distinctly pubescent 5 
5. Last dorsal segment of the abdomen notched at tip, male with ventral 
foveae 6 
Last dorsal segment not notched, male without ventral foveae 7 
6. Antennae (cf) narrowly serrate, fifth ventral of male foveate. rusticus 
Antennae (cf) not serrate, fourth and fifth ventrals foveate. . foveiventris 
7. Pubescence sparser, punctuation less close, elytra not tuberculate. . .futilis 
Pubescence denser, punctuation closer, elytra finely subtuberculate. 
grisellus 
TRANS. AM. ENT. SOC., XLIII. 
