NATURAL SCIENCES OP PHILADELPHIA. 335 



Nov. 2Qth. 

 Mr. Lea, President, in the Chair. 



Ninety-one members present. 



In accordance with the invitation extended at the preceding meeting, 

 Dr. Haves gave a narrative of the explorations of his late Arctic expe- 

 dition. He made copious collections in various departments of Natural 

 History, which, with great liberality, he placed at the disposal of the 

 Academy, for the selection of such specimens as are desirable additions 

 to the Museum. 



On report of the respective Committees, the following papers were 

 ordered to be published in the Journal : 



Monograph of the Polyzoa of the Secondary and Tertiary formations 

 of North America, by Wm. M. Gabb, and George H. Horn, M. D. 



New Unionidas of the United States, by Isaac Lea. 



Descriptions of new Birds from Western Africa in the Museum of 

 the Academy of Natural Sciences of Philadelphia, by John Cassin. 



And the following in the Proceedings : 



Notes on the Coleopterous Fauna of Lower California. 

 BY JOHN L. LE CONTE. 



The Coleoptera of Lower California, thus far unknown to science, are now, 

 by the industry of my indefatigable friend, Mr. John Xantus, capable of beino- 

 duly compared with those of contiguous regions. His collections embrace (as 

 I am informed by him) more than 500 species, of which the portions thus far sent 

 to me contain 114. It is not my intention on the present occasion to describe 

 the new species which have thus become known to me, but rather to await the 

 arrival of the remainder of the collections, and then to prepare a synopsis of the 

 fauna. In this paper I will merely call attention to the relations between the 

 fauna of the region in question and those of California, Arizona, Mexico and 

 Texas, describing only a few of the most conspicuous and characteristic 

 species. 



Among the 114 species which I have received, the following are found in 

 Upper California (maritime): Cicindela sigmoidea Lee; C. hemorrhagica Lee. ; 

 Hydrophilus californicus Lee ; Temnochila chlorodia Lee ; Sphenophorus pro- 

 cerus Lee; Dcrmestes Mannerheimii Lee; D. vulpinus Linn. 



These are found in Arizona : Saprinus fimbriatus Lee; Cerenopus concolor 

 Lee ; Hydrophilus limbalis Lee ; H. ellipticus Lee.; Diplotaxis angulata Lee; 

 Clerus latecinctus Lee; Asclera cana Lee; Dineutus sublineatus Aube, (9 in- 

 teger Lee); Sinoxylon asperum Lee. ; Arhopalus eurystethus Lee 



And these in Texas and New Mexico: Megacephala Carolina Dej. ; Casnonia 

 pennsylvanica ; Lebia grandis Hentz.; Plochionus timidus Hald. ; Derobrachus 

 geminatus Lee; Elaphidion validum Lee; Tragidion annulatum Lee; Den- 

 drobias 4-maculatus; Coccinella abdominalis Say; Acmaeodera flavomarginata; 

 Dermestes vulpinus Linn.; Euparia strigata?; Ligyrus rufinasus Lee; Ludius 

 (Crigmus) texanus Lac; Bostrichus punctipennis Lee; Notoxus monodon ? ; Sito- 

 philus oryzae ; Hydrophilus triangularis Say ; Polycaon exesus Lee; Calosoma 

 scutator Fabr. 



Of the remaining species nearly all appear to be new ; the genera are those 

 already known in our territory, with the exception of one species of Megasoma, 

 several species (perhaps five) of Breathus, allied to the common Mexican species, 

 and three Cerarnbycida? of unknown genera. 



1861.] 



