336 CALIFORNIA ACADEMY OF SCIENCES. 



III. 



In the table given on page 285 of the present paper the species designated 

 Homalium fucicola should be read //. akjarum, under which name it haa 

 been described on page 316. The name fucicola has been employed by 

 Kraatz for an Icelandic species which, although placed by Gemminger and 

 Harold as a synonym of the Swedish keviusculum Gyll., may nevertheless 

 prove to be a distinct species. 



IV. 



Polyphylla marginata is not described at present, further investigation 

 being deemed necessary to establish its validity. 



EXPLANATION OF THE PLATE. 



Fig. 1 — Colusa eximia Cas. 

 Fig. 2 — Pontomalota opaca Lee. 



2 a —Maxilla and maxillary palpus. 



2 b — Ligula and labial palpus. 



2 c— Mesosternal process. 

 Fig . 3 — Platyusa sonomce Cas . 



3 a — Maxilla and maxillary palpus. 

 3 b — Ligula and labial palpus. 



3 c — Mesosternal process. 



Fig. 4 — Bryonomus canescens Mann. — Maxilla and maxillary palpus. 



4 a — Labial palpus. 



Fig. 5 — Cafius {Remus) decipiens Lee. — Maxilla and maxillary palpus. 



5 a — Labial palpus. 



Fig. 6 — Phucobius simulator Sharp — Maxilla and maxillary palpus. 



6 a — Labial palpus. 



Fig. 7 — Orus punctatus Cas. — Pronotum. 



7 a — Maxilla and maxillary palpus. 

 7 b — Ligula and labial palpus. 



7 c — Antenna and right mandible.* 

 Fig. 8 — Actidium robustulum Cas. 

 Fig. 9 — Actidium granulosum Cas. 

 Fig. 10 — Actidium attenuatum Cas. 

 Fig. 11 — Euscaphurus saltator Caa. — Head and antenna. 



11 a — Maxillary palpus. 



11 b — Labial palpus. 



*The left mandible has not been examined. 



