6 PROCEEDINGS OF THE NATIONAL MUSEUM vol.72 



Type locality. — ^Western Ohio. 



Described from one specimen collected July 7, 191Y, by J. S. 

 Houser in wheat field. One specimen received later, collected by 

 E. D. Ball, Sanford, Fla., on June 2, 1926. 



Type.—Q^t. No. 40203, U.S.N.M. 



PACHYGONATOPUS MINIMUS, new species 



This minute species answers to the description of this genus by 

 Perkins, but the maxillary palpi are invisible or broken. 



Female. — ^Length, 2 mm. General color testaceous, abdomen some- 

 what darker. Head wider than long (6 : 4) ; vertex flat with a slight 

 impression in the middle, surface smooth without visible sculpture; 

 the lateral ocelli closer together than the distance from one of them 

 to the anterior ocellus; head produced behind the eyes, but sides 

 only slightly convergent; antennae short, not extending beyond the 

 prothorax, scape wider than two, three the thinnest and longest joint, 

 but not much difference in thickness of any ; apical joints about twice 

 as long as thick, comparative antennal lengths as follows : 7, 4, 7, 5, 

 5, 4, 4, 4, 4, 6. Pronotum smooth, polished, without visible sculpture 

 except on sides where it is minutely areolated; thoracic constriction 

 about same width as length, with a microscopic areolation; legs 

 testaceous, anterior coxae and trochanters not greatly lengthened; 

 median arm of chela extending as far as base of third tarsal joint, 

 lamellate at tip, with a row of small lamellae extending from near 

 here to articular cavity, claw unarmed, curved without subapical 

 tooth. Propodeum with fine microscopic areolation, smooth on the 

 disk. Abdomen testaceous appearing light fuscous in some lights, 

 smooth, polished, with scattered short decumbent pilosity. 



Type locality. — Elk Point, South Dakota. 



Described from one specimen reared from a jassid by C. N. Ainslie, 

 September 3, 1914. 



Type in writer's collection. 



PACHYGONATOPUS NEAKCTICUS, new species 



FeTnale. — Length 2.4 mm. General color black, except as noted 

 below. Head black, except lower face, clypeus and mandibles, which 

 are testaceous, wider than long (7:5); vertex flat with a slight 

 impression in the middle, where it is indented in a narrow line ex- 

 tending from the median ocellus to near bases of mandibles, surface 

 polished, indistinctly aerolate; lateral ocelli closer together than to 

 median ocellus; head produced behind the eyes, but sides only 

 slightly convergent; antennae somewhat longer than head and 

 prothorax together, subclavate, fuscous except scape and sec- 

 ond joint, which are testaceous; scape thicker than two, which 

 in turn is wider than three, which is the longest joint, four 



