22 Mr. T. D. A. Cockercll on Bees. 



mixed with bl;>ck or fuscous ; eyes (wlicu diy) liglit greenish 

 3'ellow ; facial quadrangle much loiifrer than broad ; clyi)eus 

 (except the usual lateral spots), labrum (except an elongate 

 median black mark), and a spot at base of mandibles light 

 Aellow; mandibles mainly ferruginous; vertex seen from in 

 front moderately elevated ; hair of occiput very long, abun- 

 dant, and white ; antennae reaching to base of abdomen, sca])e 

 ])ubescent, flagellum dull ferruginous beneath, exco|)t tirsb 

 and basal half of second joint; flagellar joints above with 

 their apical margins very narrowly white-ringed ; fourth 

 antennal joint much longer than fifth ; hair of thorax dull 

 white ; mesothorax dull, very densely malleate rather than 

 ])unctured ; teguhne dark orange-ferruginous; wings with a 

 yellowish tinge, slightly dusky on apical margin ; nervures 

 dark ferruginous ; legs black, with white hair, small joints of 

 tarsi ferruginous, hair on inner side of basal joints of tarsi 

 orange ; abdomen very dark brown, with the bases of tho 

 segments becoming black and their hind margins pallid, the 

 pubescence Avhite (pale yellowish on last segment), forming- 

 more or less distinct bands on the third to fifth segments; 

 f^id)apical lateral spines large, apical plate broad ; venter 

 hairy. 



Hah. At flowers of a tall species of MacJucranthera, near 

 tli(\ White Sands, New Mexico, Sept. 30, two males {Cock- 

 ercll) ; Buckeye, Arizona, at flowers of Cucui-hita palmatHy 

 one niale {Cockercll). 



Larger than the male of M. ohliqua^ with the fourth an- 

 tcnnal joint longer and the notches at the sides of the apical 

 ])late of the abdomen (so conspicuous in ohliqua) barely 

 indicated. The size agrees witli M. Townsendi, which has 

 the pubescence quite difl'erent ; the underside of the flagellum 

 a very lively (instead of dull) ferruginous, which extends to 

 the extreme base ; and the apical plate very hairy, with a 

 strong black rim which is not in the least notched. The 

 wholly pale hair of the ventral surface of the abdomen sepa- 

 rates it at once from J/. comancJie, Oresson, and the longer 

 antennte trom M. teocana, Oresson. 



While on Melissodes, it is desirable to mention that 

 ]\Ir. Viereck has examined Crcsson^s types of M. bidiU'rculaUi, 

 AJ. aJJUcta, and M. Sumichrasliij and finds that all three 

 belong to the genus Diadami. M. tohica and M. apacha 

 have been already referred to Diadasia by Mr. Fox. 



A iemale Melinsodes from Phoenix, Arizona, Oct. 15, at 

 flowers of Jleliantltus ctnnuus, is a])parcntly the female of 

 M.inacJtceranthenv. It has the general build of ? M.obliquaj 



