Bees and a new Proclolri/piJ. 203 



lateral coiner, its a-iterior margin quite bare, contrasting" 

 with the adjacent prothorax, which is very pube.scent ; 

 scutclluni with the anterior half hire anl tlie j)o^terior halt" 

 pubescent, ratlier prominent, slightly bilobed, with the Literal 

 teeth black, and very short; nietathorax pubescent ; pleura 

 rather coarsely rugoso-punctate, pubescent, with a very large 

 round bare area ; tegulaj aprico'-colour, witli iiyaline margins ; 

 wings clear, second submarginal cell triangular; tibial spurs 

 black : abdomen with entire bands on the hind margins of 

 the first four segments ; first segment with the basal half 

 wholly covered with pubescence, and the black area a broad 

 transverse band, rounded at the ends; second segment with 

 the apical band sending- from each side a broad process 

 antero-mesad, forming an acute angle with the band ; apex 

 red, dorsally witli a broad-oval flattened area; last ventral 

 plate curved strongly downwards at the end ; first; three 

 ventral segments with much pubescence, the last two bare, 

 the penultimate one black margined with red. 



J fab. Eedondo, California (Dr. A. Davidson). 



By the marking of the first abdominal segment this 

 resembles T. cccidentalis (Cresson) ; by the structure of the 

 apex of the abdomen it resembles T. penicilllferus (Brues) 

 and T. concavus (Cresson). It is a much smaller insect than 

 either of the last-mentioned. 



SynJialonia Gillettei, sp. n. 



c? . — Length about 16 mm. ; antennae slightly over 11 mm. 



Black, with rather dull white pubescence, faintly tinged 

 with yellowish on the thorax; antennae entirely black, 

 apical portion crenulated, third joint hardly over a quarter 

 length of fourth, fourth longer than filth; clypeus and 

 labium lemon-yelloAv, clypeus coarsely rugoso-punctate ; 

 mandibles black, with an obscure pale mark on basal portion ; 

 thorax densely hairy ; tegulte ferruginous, with hyaline 

 margins; wings slightly dusky, nervures dark ferruginous, 

 basal nervure meeting transverso-medial ; legs black, small 

 joints of tarsi ferruginous, spurs pale reddish ; hair of legs 

 all pale, that on iimer side of basal joints of tarsi ferrugi- 

 nous ; abdomen hairy, segments 3 to G wdth white pruinose 

 or velvety bands, such as usually seen in females of Syn- 

 haJonia ; venter with short scanty dark brown pubescence, 

 except at sides, where it is white and conspicuous. 



Ilah. Fort Collins, Colorado, June 12, 1902 (Colorado 

 Experiment Station). 



iS'earest to S, j'rater (Cresson), but considerably larger, 



