26 AMERICAN HYMENOPTKRA. 



posteriorly, also a deep narrow notch on each side ; venter immaculate, a few 

 hairs and punctures. Legs rufous, fore knees, middle and hind knees and tibia 

 outwardly yellowish white, middle and hind tarsi darker. Wings clear, nervures 

 and stigma dark ferruginous, a light spot before stigma. 



% . — Length 7.5 mm. Black band on vertex interrupted on each side of ocelli ; 

 clypeus 3-dentate, two yellowish spots on corners of middle lobe and one on each 

 of side pieces, covered with a dense growth of silvery hair ; yellowish on fore 

 legs a little more extended ; a band on segments 1-5, disconnected on second only, 

 apex darker than 9 . venter yellow banded ; mesothorax with black and rufous 

 merged, as are posterior lateral angles of metathorax ; eyes a little farther apart 

 than their greatest length; otherwise same as 9> except that suture of pieta- 

 thorax shows no cross wrinkles. 



One S one $ , former Utah (Mr. Baker's type), latter Rincon, 

 New Mex. (type of concinnulus 9 )• 



I fail to find the yellow-white marks on clypeus in the 9 as de- 

 scribed by Prof. Cockerell. Possibly they have faded. 



Not Identified. 



Apliilanthops liispidus Fox. 



Aphilaufhops hinpidiis Fox, Proc. Cal. Acad. Sci. Vol. iv, p. 106 (1894). 

 % . — Length 13 mm. Black ; the head, thorax, femora and first segment of 

 abdomen densely clothed with long whitish hair, as are likewise the ventral seg- 

 ments of abdomen, but not so densely: clypeus 3-dentate, finely punctured ; hind 

 ocelli separated from each other by a slightly less distance than they are from the 

 eye margin; first joint of flagellum nearly as long as three following united, the 

 second joint roundly and deeply emarginate beneath; thorax indistinctly sculp- 

 tured, evidently very finely punctured or granulated on the meso- and meta- 

 pleurse; dorsal segments 6-7 distinctly punctured : mandibles, except apex, head 

 below the antennfe, scape in front, posterior orbits narrowly, line on pronotum, 

 tubercles, tegulse, apex of four anterior femora, spot on hind femora above, all 

 the tibia at base and on outer side, spot on each side of first abdominal segment 

 (drawn out to a point within), fascia on apical part of segments 2-6 (that on 

 second narrowly interrupted medially, on third very nearly interrupted. 4 5 

 emarginate on each side anteriorly, sixth indistinct) and spot on ventrals 2-3. all 

 pale yellow or whitish : wings subhyaline, darker towards apex, nervures black, 

 stigma testaceous. 



San Jose del Cabo, Lower California, Mexico. October. 



Since the above was prepared I have taken A. laticinctus and A. 

 quadrinotatus at Cleome serrulata Denver, Colo., July 20th. 



