10 Bulletin of the Brooklyn Entomological Society ^oi. viii 



and base of knob dark brown. Legs: fore legs gone ; middle leg 

 coxae and trochanters yellowish, outer face of coxa darkened; 

 femora dull yellow, rather darkened apically ; tibise dull brownish 

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

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

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

 third over the origin of Rs, the fourth at tip of Sc, the last, stigmal 

 darkish; the interspaces between these marks cream colored; 

 veins brown, darkest in the brown marks, lightest, cream colored 

 on subcosta in the interspaces. Cord, outer end of cell 1st M 2, 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-2 at its tip; Rs long, basal deflection of Mi+-3, less than 

 one-half as long as the second section of M 1 -|- = (between r-m and 

 m) ; basal deflection of Cui 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. Named 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 insect, nearest 

 allied, perhaps, to bipectinata Will. 

 Rhipidia cramp toni sp. n. 



Antennae with ten flagellar segments long bipectinated ; anten- 

 nae brownish ; thoracic pleurae dark on the metapleurae and caudal 

 portions of the mesopleurae; wings light yellow with numerous 

 dots in almost all the cells; conspicuous costal blotches 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- 

 m_eter greater than the first; 3rd segment subglobular basally 

 with a very short pedicel, less than one-half the length of th'~ swol- 

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

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

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

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

 ment, base subglobose, with the pectinations more elongate and 

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



