10 Bulletin of the Brooklyn Entomological Society Voi. \ in 



and base of knob dark brown. Lo^'^^: foro lcj;s <^on(.' ; middle le^ 

 eoxae and trochanters yellowish, outer face of coxa darkened; 

 femora dull yellow, rather darkened apically; tibifc dull brownish 

 yellow; tarsi brown; hind leg similar to middle, but tarsal seg- 

 ments 2 to 4 conspicuously light golden yellow, the 5th lilack. 

 Wings hyaline, costal margin with five grayish-brown inarks, the- 

 third over the origin of Rs, the fourth at tip of 5c, the last, stiginal 

 darkish; the interspaces between these marks cream colored; 

 \-eins brown, darkest in the brown marks, lightest, cream colored 

 on subcosta in the interspaces. Cord, outer end of cell 1st M ■, and 

 cell R in under the dark marks with scarcely visible darker clouds 

 (see fig. d). Venation: Sc long, ending beyond the middle of 

 Rs; Sc: at its tip; Rs long, basal deflection of M ■-!-:•, less than 

 one-half as long as the second section of M i + .■ (between r-m and 

 m); basal deflection of Cu, just before the fork of M. 



Abdomen: Tergum brown; sternum lighter, yellowish-brown. 



Holotype, male, Rio Surubres, Costa Rica. Bonnefil F'm. 

 800 ft. altitude, October 20, 1909. By sweeping, coll. Dr. P. P. 

 Calvert. Type, coll. Am. Ent. Soc. Phila. Njmicd in honor 

 of the distinguished student of Odonata, Dr. P. P. Calvert, who 

 collected the type in Costa Rica while securing material for the 

 Biologia Centrali-Americana. It is a magnificent in.sect, nearest 

 allied, ]:erhaps. to bipectinata Will. 

 Rhipidia cramptoni sj?. n. 



Antennae with ten flagellar segments long bipectinaled; anlen- 

 ■ lac brownish ; thoracic pleurae dark on the metapleurac and caudal 

 ;jurtions of the mesopleurae; wings light yellow with numerous 

 dots in almost all the cells; conspicuous costal l)lotches lacking. 



Male: Length 5.3 mm.; wing, 7.1 mm. 



Head: Rostrum light brown; palpi yellow. Antennae (see 

 fig. i), first segment elongate-cylindrical; 2nd globular, its dia- 

 meter greater than the first; 3rd segment subglobular basally 

 with a verj- short pedicel, less than one-half the length of the swol- 

 len portion; 4th segment, base small, globular, produced into two 

 pectinations on the under side, pectinations short, only a Httle 

 longer than the segment itself, the dorsal pectination rather short- 

 er, pedicel of the segment longer than the erilarged base; 5th seg- 

 icnt, base subglobose, with the pectinations more elongate and 

 lender, pedicel a little longer than that of the 4th segment; 6th 



