Sept. 1897.] HaYWARD : COLEOPTERA OF N. E. AMERICA. 133 



union of tubercles iia and i on the thorax. In other respects there is 

 present only a normal primitive first stage, just as in S. virginica, except 

 for the purely specific characters of less cornified smaller tubercles, etc. 



Ctenucha virginica. 



Tubercles well developed, setge all single as in C. auge, but in addi- 

 tion subprimary vi is present on abdominal segments i to 8 ; no sub- 

 primaries on thorax. 



This represents in the Euchromiid phylum the same stage reached 

 by H. cunea in the Arctiid branch, but not quite fully as there is here 

 no trace of the subprimaries on the thorax. 



EXPLANATION OF PLATES VII AND VIII. 



Fig. I. Spilosoma virginica, stage I. Fig. 5. Halisidota caryse. Fig. I. 



" 2. Spilosoma antigone, " " " 6. Cosmosoma auge, " " 



" 3. Hypliantria cunea, " " " 7. Ctenucha virginica, " " 



" 4. Halisidota maculata, " " 



PRELIMINARY HAND-BOOK OF THE COLEOPTERA 

 OF NORTHEASTERN AMERICA. 



By Roland Hayward. 



(Continued from Vol. V, p. 40.) 



The present part of the "Hand-Book," relating to JBembidium, has 

 been prepared at the request of the Editor of this Journal, made some 

 time ago, but the fulfilment of which has been unavoidably delayed. 

 It is, in fact, an abridgment of a larger paper on the species occurring 

 in America, north of Mexico, which the author had in preparation at 

 the time when the request was made, and which has only recently been 

 published (Trans. Amer. Ent. Soc, 1897, xxiv, pp. 32-143). To this 

 the student is referred for more complete descriptions, as well as for 

 bibliography and synonymy. 



In order to economize space, the species have not been arranged in 

 groups, as has been done in the paper above cited, but are all included 

 in one table. It will be observed that in all but two of our species 

 (Jcevigatum and semistriatuni) the dorsal punctures of the elytra are 

 confined either to the third interval or to the third stria. In those just 

 cited, however, they are arranged in irregular rows on all the intervals, 



