Feb., '10] 



ENTOMOLOGICAL NEWS. 



56. parvicollis Esch. 



forma typlca. 



forma farallonica. 

 var. behrii Grinnell. (in- 

 termedia Grinnell.) 

 var. planata Esch. 

 var. producta Mann, 

 var. constricta Lee. 



57. hoppingii Blais. 



58. clavicornis Esch. (impressi- 

 collis Bohemann.) 



59. scabrosa Esch. 



60. cordata Esch. (tuberculata 

 Esch; intricata Mann; stricta 

 Lee.) 



forma sublaevis. 

 forma typica. 

 forma intermedia, 

 forma elongata. 

 forma oblonga. 

 var. rotundipennis Lee. 



61. pimelioides Mann. (viator 

 Lee.; subligata Lee.) 



var. brunnipes Casey. 



62. caseyi Blais. 



(METABLAPYLIS Blais.) 



63. nigrina Lee. 



var. perlonga Blais. 



64. dissimilis Blais. 



var. nevadensis Blais. 



65. schwarzii Blais. 



(STENELEODES Blais.) 



66. gigantea Mann. 



var. gentilis Lee. 

 var. estriata Casey. 



67. longicollis Lee. (haydcnii 

 Lee.) 



68. innocens Lee. 



(DISCOGENIA Lee.) 



69. marginata Esch. (fischeri 

 Mann.) 



70. scabricula Lee. 



forma typica. 

 forma deplanata. 



71. planipennis Lee. 



EMBAPHION Say. 



1. depressum Lee. 



2. elongatum Horn. 



3. glabrum Blais. 



4. contractum Blais. 



5. planum Horn. 



6. contusum Lee. 



forma typica. 

 forma grandis. 

 var. Laminatum Casey. 



7. muricatum Say. (concavum 



Lee.) 



The formae enumerated under each specific heading consti- 

 tute the specific aggregate. The individuals making up the 

 aggregate exhibit variation, such variation necessitates the 

 recognition of minor grades or incipient races. 



The particular form of variation which happened to serve 

 as the type of the species, characterizes the forma t\f>ica; the 

 latter may be mesotypical or heterotypical of the aggregate, 

 it all depends whether it takes its place as an intermediate or 

 an extreme in the specific series. 



For example, the species carbonaria as a specific aggregate 

 includes individuals which are comparatively smooth, others 



