ENTOMOLOGICAL NEWS 



AND 



PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 



ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 



VOL. XXII. 



FEBRUARY, 1911. 



No. 2. 



CONTENTS: 



Calvert Studies on Costa Rican Odo- 



nata 49 



Fall The Tenth Pleocoma (Col.) 64 



Beutenmuller Descriptions of New 



Species of Cynipidae ( Hym.) 67 



Nunenmacher Studies Amongst the 



Coccinellidae, No 2 (Col.) 71 



Kellogg and Paine Mallophaga from 



Californian Birds 75 



79 



Pollard A Remarkable Dragonfly .... 

 Cockerell A new Chalcidid from an 



Oak Gall (Hym.) 82 



Editorial 83 



Notes and News 84 



Entomological Literature 87 



Doings of Societies 94 



Studies on Costa Rican Odonata. 

 I The Larva of Cora. 



By PHILIP P. CALVERT, PH. D. 

 University of Pennsylvania, Philadelphia, Pa. 



(With Plates II and III) 



In the course of our entomological researches in Costa Rica, 

 a brief outline of which has already appeared in ENTOMOLOG- 

 ICAL NEWS,* I collected some Odonate larvae of a form hith- 

 erto undescribed and which, it now appears, are certainly of 

 the genus Cora. One of these was found at Peralta, Costa 

 Rica, March 24, 1910, in a shallow brook in the woods west 

 of the railroad station, clinging to a submerged stone. The 

 altitude was about 335 meters, or iioo feet. This larva died a 

 few days later and was preserved in alcohol. A second is 

 recorded in our diary, from Juan Vinas, April 27, 1910, as 

 follows: "About half a mile farther [westward from the 

 farther waterfall along the railroad from Juan Vinas station] 

 is a third fall, or rather cascade, reached by a little trail 

 through a bit of exceedingly thick damp woods full of wild 

 ginger [Costus sp., Costa Rican name canagria], heliconias, 



* Vol. XXI, pp. 334-337, July, 1910. 



49 



