SYNOPSIS OF NORTH AMERICAN BEES. 167 



4. Legs black, except knees and a line on anterior 



tibiae ; wings tinged with fuscous, darker 

 on costa ; abdominal bands uninterrupted. 

 (Calif.) laticincta, Cress. 



Legs yellowish, femora and tibins behind partly 



black ; wings fuliginous. (Indiana) . . obesa, Say. 



Legs entirely fulvo-ferruginous ; wings sub- 

 hyaline, costa broadly fuscous. (Tex., N.M.) costalis, Cress. 



5. Length about 5 mm. ..... 6. 



Length over 7 mm. ; second recurrent nervure 



reaching second submarginal cell before its 



tip 8. 



6. Pubescence of thoracic dorsum black. (Nev.) . interrupta, Cress. 

 Pubescence of thoracic dorsum whitish or 



griseous ....... 7. 



7. Abdomen with only six white spots. (Calif.) sexmaculata, Ashm. 

 Abdomen with at least eight spots. (Pa., Ills.) lateralis, Cress. 

 Abdomen with at least four slightly interrupted 



bands ....... faderalis, Smith. 



8. Pubescence mostly black .... mbi, n. sp. 

 Pubescence pale ...... 9. 



9. Densely punctured. (Colo.) . . . subemarr/inata, Cress. 

 Sparsely punctured ..... 10. 



10. Abdominal bands broadly subemarginate at sides 



posteriorly. (Colo.) ..... monticola, Cress. 

 Abdominal bands not subemarginate at sides. 



(Canada, N.Y.) nitida, Cress. 



Stelis lateralis var. permaculata, n. var. I 

 $ . Length about 4^- mm. ; black, strongly punctured ; abdomen 

 with transverse subdorsal white marks on each of the first five 

 segments, those on tbe fifth nearly obsolete, and similar lateral marks 

 on the first three segments, making sixteen marks in all. Wings 

 hyaline, slightly smoky on costa near apex, second recurrent nervure 

 reaching second submarginal cell distinctly before its end. Pubescence 

 all pale. 



Hab. Santa Fe, New Mexico, July 7th (Ckll. 1339). Mr. C. 

 Piobertson records 16-spotted males of lateralis from Illinois, but 

 does not state whether the venation was peculiar. 



Stelis rubi, n. sp. 

 ?. Length about 8| mm., fairly robust, shining, strongly and 

 closely punctured, black, with cream-coloured marks on the abdomen, 

 viz. narrow bands on first and second segments, very narrowly inter- 

 rupted in the middle, and transverse median stripes on third and 

 fourth, that on the third about twice as long as that on the fourtb. 

 The band on first segment is gently curved downwards at the sides ; 

 that on the second is narrowed to a mere line sublaterally, broadening 

 at the extreme sides. These markings are only very sparsely punc- 

 tured, and so shine more than the rest of the abdomen. Pubescence 

 sparse, black ; mixed with the black on the lower half of the face is 



