84 ENTOMOLOGICAL SOCIETY 



Clementon, New Jersey, May 6 and June 3, 1900; two re- 

 ceived from Mr. Viereck, labelled N. bisignata maciilata. As 

 Robertson has shown, Nomad a maculata Cresson was based 

 on a mixture of species ; he has restricted the name to the 

 one with bidentate mandibles. 



The specific name is derived from a Malay word meaning 

 red. 



Nomada xanthura, n. sp. 



Female. Length about 9.5 mm. Red, with black markings; much 

 yellow on the abdomen above, but none beneath, and none on head, 

 thorax, or legs. Facial quadrangle about square; mandibles simple; 

 much black around bases of antennae, sending processes downwards 

 and upwards, the latter narrowly connecting with the black about the 

 ocelli; cheeks black posteriorly; antennae normal, long and stout, red, 

 except that the first four flagellar joints are strongly blackened above; 

 third joint barely shorter than fourth; mesothorax and metathorax 

 each with a median black stripe; scutellum moderately prominent; 

 postscutellum black, with two red marks in the middle; tegulae red; 

 wings strongly reddish, darker apically, and with a subapical clear spot; 

 b. n. going a short distance basad of t. m. ; third s. m. nearly as broad 

 above as second ; legs red, the femora black at base, hind femora much 

 blackened ; anterior coxce behind with distinct but very minute and 

 short spines; first abdominal segment conspicuously narrower than 

 second, black right across basally and without yellow; second with a 

 very broad, bright-yellow band, interrupted by a slender red line in the 

 middle; third with a basal yellow band, notched behind laterally; 

 fourth with less yellow; fifth zvith a very large quadrate yelloiv patch, 

 the surface of which is shining; band of tomentum on apex of fifth 

 narrow ; pygidial plate very broad and obtuse; venter red, with black 

 and dusky markings, the most conspicuous being a transverse black 

 mark at base of fifth segment ; the scanty hairs of venter are dark. 

 Allied to N. denticulata Rob., but easily separated by the characters 

 italicised (except the coxal spines, in which it resembles denticulata). 



Sea Cliff, Long Island, N. Y., May (Nathan Banks). 



Nomada (Gnathias) cornelliana, n. sp. 



Male. Length, about 10 mm. Abdomen long and narrow, rather 

 light red, the second and third segments each with a large yellow patch 

 on each side, but no other yellow on the abdomen ; clypeus yellow, a 

 little red above; lateral face marks consisting of rather broad bands 

 which follow the orbital margin to the top of the eye, but only the 

 lower part is yellow, the upper is red, and the red may extend to the 

 occiput, behind the ocelli; third antennal joint distinctly shorter than 

 fourth; scape clear red in front, black behind; flagellum clear red, the 



