162 H. F. JAYNE. 



EXPLANATION OF PLATE IV. 



Fig. 1. — A Calosoma triste, Lee; a, right antenna, greatly enlarged. 



Fig. 2. — Left middle leg of a Cychrus angusticollis, Fitch ; enlarged about twice. 



Fig. 3. — Left middle leg of & Metrius contractus, 'E.nch.; a, colyloid cavities of 



femur a3 seen from the end; enlarged about three times. 

 Fig. 4. — Left middle leg of a Pasimachus punctulatus, Hald.; enlarged about 



twice. 

 Fig. 5. — Head and thorax of a Scarites substriatus, Hald.; a, lateral view; 



enlarged almost twice. 

 Fig. 6. — Right anterior leg of a Dyschirius globulosus, Say; a, normal left leg ; 



greatly enlarged. 

 Fig. 7. — Left middle leg of a Chloznius diffinis, Chaud.; enlarged over three 



times. 

 Fig. 8. — Right antenna of a Lichnanthe vulpina, Hentz; enlarged about seven 



times. 

 Fig. 9. — Right antenna of a Polyphylla decemlineata, Say; a, under side of 



double club ; b, normal left antenna; enlarged about six times. 

 Fig. 10. — Under side of a Strategics antceus, Fabr. ; very little larger than life. 

 Fig. 11. — Right antenna of a Telephorus rotundicollis, Say; enlarged about four 



times. 

 Fig. 12. — A Prionus californicus, Motsch.; life size; a, left maxillary palpus; 



b, right maxillary palpus; c, left labial paljius; d, articulation of 



anterior femora with tibise; e, articulation of middle and left pos- 

 terior femora with tibise; /, articulation of right posterior femur 



with tibise; greatly enlarged. 

 Fig. 13. — An Ehodes pilosa, Horn; a, right antenna, greatly enlarged. 

 Fig. 14. — The right maxillary palpus of a Helops sulcipennis, Lee; a, a right 



normal palpus, greatly enlarged. 



