l68 CALIFORNIA ACADEMY OF SCIENCES. 



PLATE VII.— Fig. 1, IApeurus densus Kell., ?. Fig. 2, L. densus Kell., 

 ventral aspect head and thorax of?. Fig. 3, L. varius Kell., ? . Fig. 4, 

 L. varius Kell., juv. Fig. 5, L. celer Kell., 6 . Fig. 6, L. celer Kell., ? . 

 Fig. 7, L. longipilus Kell., S . 



~PLATE VIII. — Fig. 1, Lipeurus picturatus Kell., ?. Fig. 2, L.pictura- 

 tus Kell., $ juv. Fig. 3, L. diversus Kell., $ . Fig. 4, L. diversus Kell., ? . 

 Fig. 5, L. limitatus Kell., ? . Fig. 6, L. limilatus Kell., outline of metatho- 

 rax to show arrangement and character of hairs. Fig. 7, L. constrictus 

 Kell., ? juv. Fig. 8, L. constrictus Kell., S . 



PLATE IX.— Fig. 1, Lipeurus ferox Giebel, ? . Fig. 2, L.ferox Giebel, 

 S . Fig. 3, L. forficulatus Nitzsch, ? . Fig. 4, L. forficulatus Nitzsch, S . 

 Fig. 5, L. forficulatus Nitzsch, juv. Fig. 6, L. forficulatus Nitzsch, very- 

 young. 



PLATE X. — Fig. 1, Lipeurus temporalis Nitzsch, & . Fig. 2, L. testaceous 

 Tschb., juv. Fig. 3, L. loxoceros Nitzsch, juv. Fig. 4, L. testaceous Tschb., 

 $. Fig. 5, L. toxoceros Nitzsch, $ . Fig. 6, L. squalidus Nitzsch, $ . Fig. 



7, L. squalidus Nitzsch, posterior margin of metathorax showing arrange- 

 ment and character of hairs. 



PLATE XI. — Fig. 1, Oncophorus advena Kell.,?. Fig. 2, 0. advena 

 Kell., head of $ . Fig. 3, Eurymelopus taurus Nitzsch, $ . Fig. 4, E. tau- 

 rus Nitzsch, head of S . Fig. 5, E. taurus Nitzsch,? juv. Fig. 6, E. 

 taurus Nitzsch, 6 juv. Fig. 7, Giebelia mirabilis Kell., 6 . Fig. 8, G. 

 mirabilis Kell., outline of head of $ . 



PLATE XII.— Fig. 1, Colpocephalum unciferum Kell., 6 . Fig. 2, C. 

 unciferum Kell., outline and last segments of abdomen of$. Fig. 3, C. 

 unciferum Kell., juv. Fig. 4, C. uniforme Kell., $ . Fig. 5, 6'. pingue 

 Kell., $ . Fig. 6, C. timidum Kell., $ . Fig. 7, C. funebre Kell., ?. Fig. 



8, C. laticeps Kell., $ . 



PLATE XIII. — Fig. 1, Ancistrona gigas Piaget, S . Fig. 2, Ancislrona 

 gigas Piaget, juv. Fig. 3, Trinoton liluratum Nitzsch,?. Fig. 4, Trino- 

 ton luridum Nitzsch, ? . 



PLATE XIV. — Fig. 1, Lamobothrium similis Kell., $ . Fig. 2, L. similis 

 Kell., ventral aspect of head of? . Fig. 3, L. atrum Nitzsch, ?(?). Fig. 

 4, Menopon navigans Kell., S . Fig. 5, M. navigans Kell., juv. Fig. 6, M. 

 indistinctum Kell., ? . Fig. 7, M. indistinctum Kell., ventral aspect of 

 thorax of ? . 



PLATE XV.— Fig. 1, Menopon numerosum Kell.,?. Fig. 2, M. titan 

 var. linearis Kell., $ . Fig. 3, M. tridens var. insolens Kell.,?. Fig. 4, 

 M. tridens var. insolens Kell., ventral aspect of head of? . Fig. 5, M. infre- 

 quens Kell., ? . Fig. 6, M. loomisii Kell., ? . 



