PHILIP P. CALVERT 327 



As to altitude tumefadus has been taken from nearly sea-level 

 up to 1000 meters; suhobtusus from 750 to 1370 meters; quad- 

 racies from near sea-level to 975 meters. Of the other species we 

 have much fewer data. 



As to seasonal occurrence it will be noted that all dates of 

 capture of adults fall between April 13 and August 15, that is 

 at the beginning, and in the first half, of the rainy season, although 

 the Atlantic slope of Costa Rica is notoriously wetter throughout 

 the year than the Pacific side. I believe that the absence of dates 

 of collection within the other montlis has some real significance, 

 since I personally collected at various times in the year at a 

 number of the exact localities in which I took Epigoniphus and 

 did not find this genus except as recorded above. ^ 



Generic Characters of Epigomphus 



In 1903^" I gave figures showing the percentage variation in 

 the generic characters of this genus. Those figures were based 

 on twenty-six individuals, viz: E. paliidosus 2 cf ; E. llama 9 cf, 

 5 9 ; -E". fjuadiacies 2 cf, 1 9 ; E. tuwefactus 2 d^; E. sidyobtusu.^ 

 4 cf , 1 9 • The present material consisting of forty-six individuals 

 has also been examined for variations in the generic characters, 

 and the data thus obtained have l^een comlMued with those of 

 1903, so that the following results are based on seventy-two in- 

 dividuals, except wdiere otherwise stated. The forty-six speci- 

 mens of the present material comprise E. quadracies 4 cf, 5 9 ; 

 E. iumef actus 5 d" 4 9 ; ^. suhobtusus 5 cf , 5 9 ; E. subsimiUs 

 4 cf, 7 9 ; E. annaius 2 9 ; E. camelus 3 d"; E. verticicornis 



1 cf, 1 9. 



The generic characters are given as nearly as possibly in the 

 same order as that in which they are listed in the Biologia Centrali- 

 Americana.^^ 



No variations have been found in the following characters: 



Internal (subtriangle) and discoidal triangles of the front wings free (i. c, 

 wdth no cross- veins). 



No anal loop on the hind wings. 



^See my itinerary in Appendix I of "A Year of Costa Kican Natural His- 

 tory," by A. S. and P. P. Calvert, New York, The Macniillan Co., 1917. 

 icEntom. News, xiv, pp. 186-187. 

 iiVol. Neuropt., pp. 146-148. 



TRANS. AM. ENT. SOC, XLVI. 



