66 Bulletin of the Brooklyn Entomological Society Vol. XV 



N. Y. (H. H. Knight). J* July 22, 2 ? July 25, c? July 29, 

 Staten Island, N. Y. (Wm. T. Davis). $ Aug. 22, Branford, 

 Ct. (W. H. Winkley). J^ July 20, c^ Aug. i, Boston; ^ Aug. 6, 

 Riverside; (^ Aug. 10, Brookline; 2 $ Sept. 24, Farmington, 

 Mass. (H. M. Parshley). ? July 12, Columbia, Pa. (T. L. 

 Guyton). J* July 20, Ann Arbor, Mich.; 2 J' Aug. 3, Washing- 

 ton Co., Mich. (R. F. Hussey). 



The writer took this species on the bark of Basswood (Tilia) 

 but it may well occur on the trunks of other trees. The nymphs 

 of this species as well as the above described forms having a con- 

 spurcate membrane, live on tree trunks almost exclusively, thus 

 it would appear that they must be wholly predaceous in their 



feeding habits. 



Explanation of Plate. 



(Figures all drawn to the same scale.) 



a, left clasper, lateral aspect. 



a', left clasper, lateral aspect with outline of genital segment added. 

 aa, left clasper, dorsal aspect. 



b, right clasper, lateral aspect. 



b', right clasper, lateral aspect with outline of genital segment added. 



c, flagellum. 



d, left clasper, caudal aspect. 



DORCUS PARALLELUS VAR. COSTATUS. 



In "Entomological News," Vol. Ill, April, 1892, Page 5, con- 

 cerning the form of Dorcus parallelus known as costatus Lee, 

 Dr. George Horn says : " Dorciis costatus though merely a cata- 

 logue name is based on those females in which three of the 

 intervals on each elytron are a little wider and more prom- 

 inent. . . ." 



He makes no mention of the male form of this insect and 

 therefore I think it worthy of note to record that I have lately 

 received from Mr. E. A. Bischoff, an interesting male example of 

 this insect taken by him, labelled New Jersey (probably in the 

 vicinity of Newark, but unfortunately without date of capture) — 

 length of specimen 20 mm. 



John W. Angell. 



