1917] Camp: Notes on the Systematic Status of Toads and Frogs 119 
Diagnosis—Like Rana boyli boyli, but attaining much larger 
size, and (except In young) with no light patch in front of dark areas 
across upper eyelids. Dorsal ground color usually lighter than in 
R. b. boylv, light yellow to brown, contrasting with the darker moss- 
like patches on the back. Tips of toes more expanded than in boylit. 
Description —V omerine teeth on two oblique ridges between nares ; 
head pointed in outline as viewed from above, broad, its width entering 
body-length two and two-thirds times; hind limbs long, posterior side 
of bent tarsus reaching forward to snout; fourth toe on hind foot 
reaching forward not quite to knee-fold; dorso-lateral fold indistinet, 
not pitted anteriorly ; tympanum and area surrounding it very rough, 
beset with small tubercles; web of hind foot extending nearly to tips 
of toes ; outer and inner metatarsal tubercles distinet ; plantar tubercles 
very large; tips of toes expanded, dise-shaped; distal end of flexed 
tibia held at right angles to body reaching anus; color above dark 
yellow, with a reticulated pattern of moss-hke dark patches; beneath, 
yellow, spotted with dusky on throat and chest; upper lip below eye, 
mottled. 
Material—F ifty-one specimens in the Museum of Vertebrate Zool- 
ogy, from the following localities in southern California: San Jacinto 
Mountains: Keen’s Camp (nos. 3804, 3805) ; Strawberry Valley, 6000 
feet altitude (mos. 534, 550, 584) ; Fuller’s Mill, 5600-5800 feet (nos. 
278-287, 314) ; Sehain’s Ranch, 4900 feet (no. 353); Cabezon, 2000 
feet (nos. 151, 177); and Snow Creek, near Whitewater, 2500 feet 
(nos. 79, 194-197); San Bernardino Mountains: Santa Ana River, 
5500 feet (nos. 714, 715) ; Fish Creek, 6500 feet (nos. 772-774) ; and 
Barton Creek, 6000 feet (mo. 4389); and San Gabriel Mountains: 
Canons near Sierra Madre, 1200-3000 feet (nos. 4874-4377, 4388, 4855, 
4856, 4868) ; West Fork San Gabriel River, 3000 feet (nos. 4378-4385) ; 
Arroyo Seco Canon near Pasadena (nos. 770, 771); and Little Rock 
Creek Canon, 4700 feet (nos. 4390, 4391). 
Variations —The dorsal color pattern in some specimens, particu- 
larly those from the San Gabriel Mountains, is different from any- 
thing found in R. b. boylit. The ground color is lighter in these speei- 
mens than in either of the two northern subspecies, and is thickly 
marked with the lichen-like dark patches from which the name is 
derived. In other specimens, especially those from the San Jacinto 
Mountains, the color is darker, becoming uniformly dark brown in a 
single individual from Strawberry Valley, one of the extreme southern 
stations for the species. Some of the San Jacinto Mountain specimens 
