30 THE CANADIAN ENTOMOLOGIST. 



c\ Mesothorax twice as long as the prothorax ; basal joint of 



antennae but little longer and little stouter than the second 



Anisomo7'pha. 



c^ Mesothorax no longer than prothorax ; basal joint of antennae 



fully twice as long and, especially on apical half, twice as stout 



as the second joint Timema. 



b'^ Antenna with less than twenty joints, shorter than the fore 

 femora; anterior segments of abdomen much longer than broad 

 Bacillus. 



BaCUNCULID/E. 



Diaphero?nera, Gray. — The described species are D. deniicrus, Stal, 

 a large species found in the south-west (Louisiana and Texas); D. 

 femorata (Say), of which D. Sayi, Gray, is a synonym, the commonest 

 species and of the widest range, and D. velii Walsh, described from 

 Nebraska. Apparently other species occur, but they have not been 

 studied. 



Sermyle Stal. — A species occurs in Texas,»perhaps undescribed. 



Bacunculus Burm. — Two species are found, one in Central Texas, 

 the other in Southern Florida. Both are believed to be undescribed. 



Anisomorphid^. 



Afiisomorpha, Gray. — Three nominal species are known : A. bupres- 

 toides (Stoir), A. ferruginea (Pal. de Beauv.) and A. bivittata (Say), all 

 from the south-eastern and southern United States. Very likely there is 

 only a single species (which must then take the name buprestoides), but 

 A. ferruginea may be distinct from the others. 



Timema {Tiinj/ia) gen. no v. — This genus is closely allied to Aga- 

 themera Stal, but is readily distinguished by the somewhat remarkable 

 antennae, the first joint of which is very large, much enlarged apically, 

 though narrowed a little at the extreme apex, several times longer than 

 broad, and two or three times larger than the eyes. The head is of equal 

 width with the prothorax, which is not narrowed anteriorly. A single 

 s.pecies from Santa Cruz, California, has been brought to my notice by 

 Prof. L. Bruner. I propose to describe it as T. californicmn. 



Bacillida:. 



Bacillus Latr. — Two species have been briefly noted : B. coloradus 

 Scudd., found in Colorado, and B. carinaius, Scudd., occuring in Arizona 

 and northern Mexico. 



