44S 



ENTOMOLOGICAL NEWS 



[Dec, '14 



The specimens I have referred to this species, of which only 

 the type S is known, were examined by Dr. Calvert, who sug- 

 gested they might be immaturely colored vastus. Their close 

 relationship to I'astits is certain, the color pattern of the head 

 and thorax being almost identical, though the dark color is 

 much paler and more obscured in the Texas material. In the 

 male of vastus the genitalia of the second segment are black, 

 brown in the Texas specimens ; and the anterior median angle 

 on the second hamule, seen in profile, is much stronger in 

 vastus. In color of abdomen the Texas specimens are much 

 paler than vastus, 7-10 being largely brownish yellow and yel- 

 low, with obscure pattern, instead of the largely black with 

 sharply restricted yellow markings of vastus. Moreover, in 

 profile, the superior appendages of vastus are slenderer than 

 those of the Texas specimens. 



The occiput of the female from Texas is 

 low, nearly straight, sloping gently from 

 either side to a slightly lower center. In 

 vastus the vulvar lamina is relatively nar- 

 rower than in the Texas specimens, figured 

 here, with the sides more nearly subparallel 

 and the 2 points of the apex contiguous. 



De Selys compared consanguis with fra- 

 tcrnus and adelphus. The latter species is 

 known to me only from descriptions. It is 

 smaller than consanguis. From fraternus, 

 consanguis is separated at once by the 

 colored face and the thoracic markings (the more developed 

 and cuneiform mid-dorsal stripe, and the complete, not inter- 

 rupted, first lateral stripe), as well as the abdominal colors 

 mentioned above in the comparison with vastus. 



There is a fair degree of probability that the species here 

 identified is not really consanguis, but, until the latter species 

 has been positively determined and comparisons made directly 

 with the Texas species, there is no justification, though the 

 localities (North Carolina and Texas) are widely separated, 

 for describing the latter species as new. The 2 males and 2 



Gomphus consanguis ?, 

 vulvar lamina. Black 

 Bayou, Texas, May 

 19, 1907. 



