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 H. algarum, under which name it has 

 been described on page 31G. The name fucicola has been employed by 

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

 Harold as a synonym of the Swedish Iceviusculwn 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 — P 'latyusa sonoma>. Cas. 



3 a — Maxilla and maxillary palpus. 

 3 b — Ligula and labial palpus. 



3 c — Mesosternal process. 

 -Bryonomus canescens Mann. — Maxilla and maxillary palpus. 



4 a — Labial palpus. 

 -Cafius (Remus) decipiens Lee. — Maxilla and maxillary palpus. 



5 a — Labial palpus. 

 -Phucobius simulator Sharp — Maxilla and maxillary palpus. 



6 a — Labial palpus. 

 -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 mbustulum Cas. 

 Fig. 9 — Actidium granulosum Cas. 

 Fig. 10 — Actidium attenuatum Cas. 

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



11 a — Maxillary palpus. 



11 b — Labial palpus. 



*The left mandible has not been examined. 



