415 



apex to l>:is(> of one teginen ; colors urc aeeordiiiii' to the Kulgc- 

 WAV standaivl. 



The laoro one works ii])oii the Fuliiorids the more one is 

 eonvinecd of the necessity of nsiiiii,' the ii'cniitalia for s])e('iH(! 

 distinction. Unfortunately these characters are sehloni men- 

 tioned by describers, except in one ii'ronp of the I)el])hacidae, 

 and in a great many instances the sex of the insect being de- 

 scribed is not mentioned, or it is wrongly mentioned. There 

 are good characters in both sexes for dividing the Ilomoptera 

 into gron]')S, and even among the Fnlgorids th(n-e are good 

 group distinctions which have not yet been fully worked out. 



DERBIDAE. 



Genus Herpis Stal. 



Ilcrpis ohscum? (Ball). 



Lamcnta ohsciira Ball, 1002, Can. Entoni. XXXIV., p. 262. 



The specimens I have agree with, the descri])tions of this 

 species as far as the descriptions go, but they are incomplete. 



Anal segment much longer than broad, gradually constricted to the 

 middle, apex truncate, anus near apex ; length of genital styles twice the 

 width, ventral or inner margin entire, slightly convexly curved, apex 

 produced into a broad, sharp point turned inward, dorsal or outer margin 

 turned at right angle to disk leaving an entire, nearly straight false mar- 

 gin when viewed from outside, the true margin strongly convexly curved 

 on apical two-thirds with a slender projection near the base with its 

 pointed apex at right angles to the stem. 



One pair from Cabanas, P. de 11., (^iba, one female from 

 Pinar d. Kio, P, de R., Cuba, September, 1913; also one pair 

 from Pockstone, British Guiana, July, 1911. 



]\Iy specimens of //. vulgaris (Fitch) is a larger insect, 

 the genital styles are longer in proportion to the width, the 

 a]ncal spine more slender, the dorsal margin more angularly 

 produced and its l)asal i)rocess with two a]ucal spines. 



