232 WILLIAM J. FOX. 



14. Pubescence appressed, rather sliort and silky, usually scarlet, though some- 



times paler OCci«leiltali«* Liune. 



Pubescence erect, tolerably long and coarse, pale fulvous. 



«M»inaiiclie Blake. 



15. Segment 3 and following entirely black, or the third sometimes with some 



fulvous pubescence 16. 



Segment 3 and following entirely, or at the sides with pale pubes('ence, ground 

 color variable, the second dorsal, however, always reddish or fulvous; 

 pubescence of body above varying from pale fulvous to a deeper red. 



{egiiia Cress. 



16. Ground color castaneous, second dorsal fulvous; head above entirely with 



reddish pubescence creiiSM Cress. 



Ground color black, second dorsal fulvous in part or black ; head on vertex 

 with reddish pubescence ereiisa var. (=medea Cr.). 



17. First segment almost sessile with the second ; head at most scarcely as wide 



as widest part of thorax, more or less narrowed behind 18. 



First segment rather nodose, rarely otherwise; head large, fully as wide or 

 wider than widest part of thorax, subquadrate, not or scarcely nar- 

 rowed behind 27. 



18. Second dorsal segment black in greater part 19. 



Second dorsal reddish, as well as greater part of insect 20. 



19. Seccmd dorsal with two or four yellow spots; apical margin of segments 



fringed with silvery pubescence; legs usually red but varying to 



black 4-siittata Say. 



Second dorsal not maculate, or with a faint trace of spots; abdomen without 

 silvery pubescence, or the ventral segments may be fringed with it; 

 legs black 4-gtittala var. i = eled)a Blake). 



20. Head rounded behind, not tubercuhite 22. 



Head with postero-iateral angles angulate, carinate or tuberculate 21. 



21. Postero-iateral angles of head acutely angulate, the first segment dentate on 



the sides medially aiigiiIioe|>N n. sp. 



Postero-iateral angles of head bearing a short carina or elongate tubercle; 

 first segment not dentate on the sides medially cypris Blake. 



22. Head and thorax with a dense, hoary pubescence, the entire insect sparsely 



clothed with erect, pale hair; abdomen entirely red, except apex of 



second dorsal, which is black .caiieo Blake. 



Head and thorax scarcely pubescent at most with some erect hairs; apical 

 abdominal segments black entirely or in part 23. 



23. Carina of first ventral segment produced anteriorly into a stout tooth (legs 



black) f*errugata Fabr. 



Carina of first ventral segment emarginate medially, so that it is biden- 

 tate 24. 



24. Second dorsal segment coarsely sculptured throughout 25. 



Second dorsal segment punctured, sparsely so between the middle and sides, 



so that it presents two large, rather smooth areas, which are pale 

 yellow: thorax very coarsely rugose, the head strongly punctured. 

 Length 6 mm. riigiilosH n. sp. 



25. At most the head and thorax with sparse, golden pul>escen('e; sec<uid dorsal 



not rugosely punctured at base, its apical silvery hand entire 26. 



