KORTH AMERICAN HYMENOPTERA. 293 



Oxybelus subcornutus n. sp.-Female about 8 mm. lon.s, strcnffiy 

 punctured l.ut not so closely ..u al.domen as in si^aWrfews. Black, with yellowish 

 white markings; silvery pubescence on face and pleurae; vertex with a small 

 tubercle, looking something like a fourth ocellus; prothorax carinate; scutel urn 

 not carinate, or very feebly and almost invisibly so ; squama joined m the middle 

 line, each ending apically in a strong curved tooth; spine small, rather broader 

 at end than at base, abruptly truncate ; median sulcus of first abdominal segment 

 almost entirely obsolete, or at least very shallow; tip of abdomen truncate, very 

 feebly subemarginate. Antennae black, slightly brownish towards tips ; posterior 

 lateral tubercles of prothorax wnitish ; tegute testaceous; squama and spine 

 whitish Abdomen with the bands yellowish white, interrupted in the niiddle : 

 femora black, posterior borders of anterior and middle ones mostly white; tibi^ 

 mostlv black on one side, the other side of anterior tibi* rufous, of middle and 

 posterior, white ; anterior tarsi rufous ; posterior and middle white, the terminal 

 joints darkened. Wings hyaline, veins piceous. 



m6.-Las Cmces, New Mex., Aug. 11, 1894 (C. H. T. Townsend). 



This seems very near to 0. cornutus Rob., and might be a form of 



the 9 of that species (Robertson only describes the I ). In mb- 



coruntm the ocelli are normally placed, and the spine is truncate, not 



rounded. The mandibles of mbconmtm are rufous ui middle as m 



Goynutn.'<. 



Mr. Fox recognized coniuta^ in a Las Cruces specimen formerly 

 sent him, and this circumstance favors the idea of mbcormdm being 

 a form of the same. 



[NOTE.-O. mhcornatu, differs from the 9 of comMm by the sparser punctua- 

 tion of dorsulum and abdomen, particularly that of the second ventral .segment: 

 in comntm it is covered with coarse, rather close punctures, while in srd^cornrdn. 

 it is very sparsely punctured. The form of the abdominal markings is diHerent 

 also.— W. .T. F.] 



Vphilautliops tatirulus sp. nov. %. Length about 11 mm.: of ante- 

 rior win- about 8 mm.-Black, with the markings bright lemon-yellow. Head 

 l>road and thick ; seen from in front broader than high ; eyes elongate-oval, par- 

 allel entire olive-green, further apart from each other than the greatest length 

 of either- ocelli about as far from eyes as the third and fourth joints of antennae, 

 liind ocelli a little nearer to each other than the length of the third antennal 

 ioint Head pitch-black, strongly punctured on vertex, but with a smooth, 

 shining spot, about as big as an ocellus, some distance behind the ocelli; cheeks 

 and face covered with appressed, shining, silvery hairs; overlapping the base ot 

 the mandibles, on each side, it a triangular tuft of reddish hairs, and immediately 

 above this tuft is an obliquely oval, pale yellow spot, rather obscured by the sil- 

 very hairs: mandibles reddish at tips, and with a small yellowish white spot ex. 

 ternallv at the base Antennae about as long as the head is high, black, with the 

 end of "the scape broadly pale yellow ; fourth joint about half as long as third. 

 Thorax black, with the collar, tubercles, tegulte, transverse band on scutellum 

 and small mark on each side, and transverse band on post-scutellum, lemon-yellow ; 

 metathorax truncate ; prothorax in front shining, s,.arsely punctured ; mesothorax 



