14 ENTOMOLOGICAL SOCIETY 



interrupted forcibly, although so gently and gradually that 

 the female was not greatly disturbed. Male No. I, immediately 

 after connection was broken, evinced a desire to leave the 

 female, showing no desire whatever to renew the relations. 

 Rapidly regaining activity he soon rose in the air and slowly 

 flew away. 



Male No. 2 left the back of the female as soon as male No. I 

 had disappeared, and stationing himself about fifty or seventy- 

 five millimeters directly in front of her began a series of com 

 plex marches and short charges towards her. The female, 

 though loath to move, resisted these advances and when male 

 No. 2 continued to approach her she made a short charge 

 toward him, buzzing her wings and waving the prothoracic 

 legs threateningly. This procedure was repeated several times 

 until the female had succeeded in impressing male No. 2 with 

 the idea that further advances would be dangerous; she even 

 fiercely attacked the male once or twice as the result of his 

 charges toward her. The female next evinced a desire for 

 flight and rose in the air once or twice but was struck back 

 upon the ground. Here she remained, apparently in a sullen 

 mood and scarcely responding to the straw irritations. Male 

 No. 2, noticing the female's change of mood and probably 

 scenting trouble through outside circumstances, gradually lost 

 his interest in the case, though he remained close to the female 

 until the last. 



Five photographs were taken, each showing the three insects 

 in situ. In No. I the female is clinging to a weed stem while 

 male No. I is suspended by the genitalia and male No. 2 is 

 clinging to the female. 



Doctor Dyar presented for publication notes on the collec 

 tions of mosquitoes made for Doctor Howard under the 

 auspices of the Carnegie Institution of Washington by Mr. 

 August Busck in the West Indies and by Mr. Frederick Knab 

 in western Central America. The results of both trips are 

 very satisfactory. Mr. Busck's region proved richer in species, 

 as would be expected, the west coast of Central America being 

 more arid. Many new larvae were discovered ; Doctor Dyar 

 exhibited sketches of 24 species not hitherto known from our 

 territory. Two of them have been previously described by 

 Goeldi from South America ; the others are new to us. 



The wealth of ae'did larvae shown in these collections had 

 led Dr. Dyar to hope that some character might appear sepa- 



