l68 CALIFORNIA ACADEMY OF SCIENCES. 



PLATE VII.— Fig. 1, Lipeurus 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, £. longipilus Kell., 3 . 



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

 his Kell., $ juv. Fig. 3, L. diversus Kell., $ . Fig. 4, Z*. diversus Kell., ? . 

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

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

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



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

 6 . Fig. 3, L. forficulatus Nitzsch, ? . Fig. 4, L. forficulatus Nitzsch, $ . 

 Fig. 5, Z/. 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. toxoceros 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 XL — Fig. 1, Oncophorus advena Kell.,?. Fig. 2, 0. advena 

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

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

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

 mirabilis Kell., outline of head of ? . 



PLATE XII.— Fig. 1, C'olpocephalum unciferum Kell., 3 . Fig. 2, G. 

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

 unciferum Kell., juv. Fig. 4, G. uniforme Kell.,?. Fig. 5, G. pingue 

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



8, C. laticeps Kell., 6 . 



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

 gigas Piaget, juv. Fig. 3, Trinoton lituratum Nitzsch, $ . Fig. 4, Trino- 

 ton luridum Nitzsch, ? . 



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

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

 4, Mcnopon navigans Kell., $ . Fig. 5, M. navigans Kell., juv. Fig. 6, M. 

 indistinclum Kell., $ . Fig. 7, M. indistinctum Kell., ventral aspect of 

 thorax of 5 • 



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., ? . 



