Transcribing the field notes of the Museum of Vertebrate Zoology

Collector:Grinnell - 1925 Location: San Diego Date: March 3, 1925 Page Number: 2452

in any feasible way. Klauber is amateur herpetologist, a good friend and scientific protege of Dr. VanDenburgh before the latter's death. His published list of San Diego County snakes is very creditable. Klauber took me out to the Scripps Institution beyond Lajolla in the afternoon yesterday; there we saw Dr. F.B. Sumner and the latter's "murarium." The chief things Dr. F.B. Sumner is breeding are the Alabama races of Peromyscus, a white one in San Jose Island [unknown 4], a dark one in the interior of the state, and one of intermediate tone on the mainland seashore. Dr. Sumner caught alive and brought with very few fatalities over 150 of these mice to Lajolla, where they are thriving and breeding in his mouse-house. I saw the first generation from the sand-white race, bred in confinement, and they are just like their parents - no darkening. Dr. Sumner has cross-mated some of the mice, and has blended intermediate offspring, between parents of the different races; in other words the characters do not sharply segregate. So far, attempted matings between the Alabama (P. leucopus, ssp.) with Californian P. maniculatus, ssp., have proven fruitless. The Austrian zoologist, Dr. Paul Kammerer, had been at Lajolla in the forenoon; Dr. Sumner was very