Catalogue of the Library of the California Academy of Sciences; To January 1st, 1889

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1889 Excerpt: ... A NEW GENUS AND SPECIES OF N. A. SCARABJEIDJE. BY J. J. RIVERS. The insect about to be noticed, would in general appearance remind any one of Pentodon, but an oxamination of the mouth parts would at once dispel the idea, the strongly toothed outer margin in Pentodon, together with the highly developed teeth of its maxillary galea, would seem to remove those insects to different associates. The one I now mention has a history; it adorns several collections either without a name or else labeled Aphomis clunalis Lee. A reference made to LeConte's description of A. clunalis, Proceed. Acad. Nat. Soi., Phila., Vol. 8, p. 23, 1856, and at the end of the description the following phrase maxMarum galea bidentata, is sufficient to show that LeConte did not refer to the present insect, for its maxillary is entirely unarmed. There appears to be no description of this insect anywhere in the literature of N. A. Coleoptera; and thinking that as this species was from El Paso, Texas, Mr. W. Bates, of England, who is working upon the Mexican Searabreidae, had perhaps received and already incorporated it in his monograph, I wrote to him concerning it. He replied: Proceed and describe it; send me a copy of the publication containing the description, and I will adopt your naming if I find the species among those occurring across the line. This insect was in a large capture of Scarabaeidas taken last year at El Paso, Texas, by G. W. Dunn, after whom the specific name is formed; the generic name is derived from the unarmed condition of its galea or maxillary. The group it belongs to is very puzzling, as it appears to possess diverse characteristics; the tarsal form aml lack of stridulating organs throw it with Aphonus; the style of sculpture of the elytrae is of the common ob...