ENTOMOLOGICAL NEWS 
PROCEEDINGS OF THE ENTOMOLOGICAL SECTION 
ACADEMY OF NATURAL SCIENCES, PHILADELPHIA. 
Wee. A XFIT: JULY, 1912. No. 7. 
CONTENTS: 
Calvert—Studies on Costa Rican Odo- Polee piers. cence acc nincie acs ecine <x « 320 
OEE) sap scs no dsane eeocsneesaaesaees ges\| Lahey el | abe Sich nee as SAS eee 324 
Girault—Notes on the Hymenoptera | Headlee, et. al—Strict Priority in No- 
Cin ard iit Ge ee ee 296 | menclature—or Not?..............- 325 
The Vote on Priority in Nomenclature. 300 | Americans at the International Con- 
McGregor—A new Mallophagan....... 305 | gress of Entomology ....-.......... 327 
Angell—Two new North American spe- Cockerell—Food Plant of Dysdercus 
cies of Necrophorus (Coleop.)..... 307 | AUTAIMNUS POA italananiecle sine esas ele ar 327 
Fisher and Kirk—Cerambycidae from Entomological Investigation of Okefe- 
Harrisburg, Penna., and vicinity, NOKCG SWAMP Sosa ee cee soa nasisise te 327 
MmabbBores (Coleagy) =. ......1- =... 308 | Porter—Collecting in Tropical America 328 
de la Torre Bueno—Nezara viridula | Westcott—Scarcity of Early Insects... 328 
Linne, an Hemipteron new to the Rohwer—One Reason for the Change 
Northeastern United States........ 316 | of Names ......... A) be cdsdobeeeced 329 
Cockerell—A new Chalcidid from Guat- | Holloway—An Experiment on the Ovi- 
emivia (tlymen.)-.-2.....----.2-..- 318 | position of a Hymenopterous Egg 
Fall—A new Tetropium, two new Bru- PASTAS Heer ep cree cia ee aclcisic isin sineise 329 
chides, with brief notes on other Entomological Literature ............. 331 
Studies on Costa Rican Odonata. 
IV. Erpetogomphus in Costa Rica, with Descriptions of a New 
Species Having Complex Structural Mating Adaptations. 
By Puivie P. Catvert, Pu.D., University of Pennsylvania, 
Philadelphia, Pa. 
(Plate XVII) 
The following summary of the geographical distribution of 
the genus Erpetogomphus was published in 1905 (Calvert, 
IQOI-1908, p. 159) : “A very characteristic genus of the present 
[ Mexican-Central American] fauna. Eleven species are now 
known, ten of which have actually been found in Mexico or 
Central America. The eleventh, E. compositus, is known from 
Texas and Arizona, and will doubtless be found in Mexico; 
it has been reported from the Yellowstone and Oregon, which, 
with Ohio and Indiana (E. designatus), are the most northern 
known limits of Erpetogomphus. To the south, Guatemala is 
at present the known limit; there is, however, a very doubtful 
record from Brazil.” 
In 1907, in the supplementary part of the same volume (p. 
398), it was possible to say: “The most southern locality for 
this genus certainly known is now San José, in Costa Rica, as 
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