AMMOPHILA. 19 



b. Legs more or less red. (Species 26-28.) 

 26. Ammophila varipes. (Tab. I. figg. 17 ; 17 a, 6 .) 



Ammophila varipes, Cresson, Proc. Ent. Soc. Phil. iv. p. 457 \ 



Hab. Noeth Ameeica, Colorado x . — Mexico, Northern Sonora (Morrison). 



I believe I am correct in referring the specimen from Sonora to A. varipes. In this 

 example the face, metanotum, and pleurae are covered with a dense silvery pile ; and 

 the top of the thorax is sparsely clothed with silvery or cinereous hair. The clypeus is 

 rounded, almost transverse in the centre. The thorax is rather strongly and closely 

 punctured ; the scutellum is rugose ; the metanotum is rugosely punctured in the 

 centre, obliquely striated at the sides. The four anterior legs are reddish, except the 

 coxae, trochanters, and the extreme base of the femora ; the hind pair are black, except 

 the apex of the femora, the base of the tibiae, and the calcaria, which are reddish. The 

 anterior legs are sparsely covered with long silvery- white hair; the middle legs bear 

 but very little hair ; the posterior tarsi are slightly spined ; all the coxae are thickly 

 covered with a silvery pile ; the posterior legs are hoary. The petiole is entirely black ; 

 the other segments are more or less black above. The second cubital cellule above is 

 twice the length of the third and scarcely one fourth narrower above than below ; the 

 third cellule is half the length of the lower side above ; the third transverse cubital 

 nervure curves backwards at the middle. 



J 27. Ammophila comanche. (Tab. I. fig. 14.) 



Hab. Mexico, Northern Sonora (Morrison). 



This species agrees rather closely with A. varipes, but is, I believe, distinct from it^ 

 The pile on the face is denser and thicker ; on the thorax above it is quite dense ; the 

 metanotum is transversely striated ; the four anterior femora are not black at the base ; 

 the hinder femora and tibiae are for the greater part reddish beneath, as are also the 

 tarsi ; the abdomen has the petiole black ; the second segment has a black line above 

 and beneath at the base ; the third segment is black in the middle ; the four apical 

 segments are black, except beneath ; tegulae red ; the costa testaceous at the base ; 

 the second cubital cellule above is five times the length of the third (above it is as long 

 as the space below between the first recurrent nervure and the second transverse 

 cubital nervure) ; and the third cellule below is nearly four times the length of the top. 

 Length 21 millim. 



\l 28. Ammophila hreviceps, 



Ammophila hreviceps, Smith, Cat. Hymen. Ins. iv. p. 221 1 . 

 Hab. Mexico 1 . 



This species agrees in coloration with A. varipes, and A, varipes may indeed be a 



dd2 



