— 2 39— 



Entomological Society of Washington. Meeting held February 10th, 

 1887. — Mr.Mann gave a review of bis work on tbe Bibliography of Economic En- 

 tomology partly clone by him privately in former years and partly during his 

 connection with the U. S. Entomological Commission and the U. S. Department 

 of Agriculture. After several interruptions and changes in the plan the work is 

 now partly completed and ready for publication. 



Mr. Schwarz exhibited an undeseribed species of Phytobius from Michigan 

 and described the peculiar characters of this genus which are indicative of an 

 aquatic mode of life. He read in translation Perris's account of the life history 

 of Phytobius velatus which lives in all stages under water on the leaves of Myti- 

 ophyllum spicatum. 



Mr. Schwarz read a paper on the sexual characters in the N. A. species of 

 Anaspis. There is great discrepancy in the descriptions of these characters 

 j^iven by Dr. LeConte and Mr. J. B. Smith, while his own observations led him 

 to disagree with both authors. He had examined males of 4 species and finds 

 that the abdomen is never excavated but provided with two long filiform appen- 

 dages arising from the apex of the 4th ventral segment. In most specimens, 

 however, the appendages are closely applied to the ventral suiface so that their 

 real nature is readily overlooked, and the abdomen presents then in a most de- 

 ciptive manner the appearance of being excavated. The appendages appear to 

 be movable in an up and downward direction but are not capable of lateral 

 movement. This structure is modified in ihe differt nt species and affords a 

 much better criterion for the. distinction of the species than those now used in 

 the tables. 



Mr. Schwarz related a conversation he recently had with Dr.Horn regarding 

 the stridulation of Harpalus caliginosus. It appears that Dr. Horn distinctly 

 heard the sound in a specimen when this was at liberty and undisturbed, and 

 this fact explains the failure of other observers who always tried to make the 

 Harpalus stridulate when the specimens were handled. In all other stridnlating 

 Coleoptera the sound is more frequently heard when the specimens are fright- 

 ened or handled or otherwise in a state of excitement. 



ERRATA. 



Page 55, line 4, from bottom, for horbaccous, read herbaceous. 

 " 70, " 12 of first column, for Saerda read Saperda. 



" 79, for Pyrrhaitia in explan. of figure, read Pyirharrti/i 



" 106, line 21, for Agnotemyia, read Agnotomyia. 

 •• 179, " 17, for useless, read useful. 

 " " " 35, for peste, read pests. 

 " 190, " 18, for straighed, read straight. ' 

 " 199, " 9, for mormornia, read mormonus. 

 " 204, " 25, for Scorpionidal, read Scorpionidae. 

 "209, " 5, for mjority of Cicindel, read majority of GicindtZa . 

 ■' 221, " 16, for mendicta, read mendicata. 

 "223, " 19, for denticulatu, read deniiculata. 

 For notes as to errata see pages 137 & 164 a. 



