Fig, 
1. (7661) (}). 
2. (11290) (#). 
3. (500) (42). 
4, (1987) (#) 
. 
5. (13016) (#). 
6. (7596) (42). 
7. (5355) (4). 
8. (5145) G-). 
9. (8986) (42). 
10. (490) (48). 
11. (8957) (42). 
12. (13026) (#). 
13. (1.609) (42). 
14. (4496) (42). 
15. (1) CY). 
16. (1) (#). 
17. (483) (42). 
18. (5655) (48). 
= 
=) 
. (13674) (2). 
20. (7516) (2). 
21. (11260) (48). 
190 
Pa A vee 
All the drawings are by J. Henry Blake. 
Page. 
Grypidius curvirostris.---..----2.- --- 2. 5 oo on nn nn = nnn 100 
DOT VLOUIUS | yy LL ANUS De rete me ee le ee 99 
Macdalis sedimentorum .- <2. eon aa eww 107 
Dony tons COCLCIIUS = erseieee ena ate ees tee ee ee eee eee 99 
Macro nko p tues Urn tree en ct oeeeee aelea eae 118 
riblogeynenyn(e] Hep ENE leks Ree Seon coco diode aGopey sess cososnScdcese sees 105 
Hockeonus! Sub) CCHS a eeee mene se eee ene Hee Sen eee eee eee 95 
Orchespes lan our dus ee eer en ene ee le eee 17 
Gremastorbynchusishal bili See ose te ele ae ee 110 
IX AO EO) OC ao eeisoccn done Aner esesetoe cole Seems cssoacoseco7s 108 
Ty Chius 6Volatus)-— 20s. sect oa ae eee em setae ates eee eee ee eaten 120 
WM CATHIE] RUS sn ocicn da 254 cases 5 Goss “Soeneste cose ooch Leen, 120 
Tychius evolatus; head with rostrum and antenne...........-.-.--.--- 120 
Gymietron antecumnensh ae see = = ee ee ee Bee RP) 
Sibynes whitneyi; head and rostrum....-------- Sekt eno ace SoS 121 
SLID RMS WW RMT C590 amet tat 121 
Tychiusevolatuss)in outline=-=- °- cease eee eee ee ee 120 
Cryptorhtynehugpromisus-e.=- =-- ee see =e ee ee eet 127 
RB ysosternum ceterna DiC Ss eae are alee ee ere ea alee 125 
Rib ysosterntami low pun trea a a eee ae le ale eee 125 
Cryptorhynechus kerri-..-.. Shot Se CSAC toner ocdeoccasedausens Soosestes 127 
