Amphibia of Jefferson County, Mo. 189 
Bufo fowleri GAarmMAN—Fowler’s toad is rather abundant ana 
has been collected at Sulphur Springs, Pacific, Glaize Creek, Kimms- 
wick, Barnhart, Hollywood Beach, and Big River Heights. Its habits 
and characteristics differ little rie the preceding species. 
Acris gryllus (Le Conte)—The cricket frog is the most c 
mon frog in this county where it has been collected at Isle Du Bois 
Creek, Danby, Kimmswick, Barnhart, Antonio, Sulphur Springs, 
Featua, Pacific, Sunnyside, and Maxville. It is generally abundant 
wherever permanent waters are to be found, where it may be taken 
as early as the middle of February and as late as mid-November. 
On July 17, 1932, metamorphosis was occurring in these frogs at 
Isle Du Bois Creek where, it was estimated, many thousands of 
these small frogs occurred, and where specimenes in almost a 
stages of development were present. Some juveniles without fully 
absorbed tails had bright green dorsal patterns while tailed speci- 
mens approaching transformation possessed the La triangular 
dorsal marking, but no such larvae were observed to have the black 
tail tip characteristic of the tadpoles occurring in a eosiinnd pond 
at Danby, about two miles distant. A transforming specimen upon 
emergence from the ge on August 9 possessed a body length 
14.4 mm., tail, 14. wo boars and forty minutes later the 
tail measurement ag oe an absorption of 4.15 during this pe- 
riod. Another larva, measured at 9:15 , had a body length 
of 15.1, tail, 31.7, of which 9 mm. possessed dark pigmentation; 
the mouth was transformed, the dorsal pattern distinct. By 7:30 
P.M oe 10 the body es was 14.4, tail, ee dark tip, 3 a 
and by 2 P. M. August 11 the body length was 14, thi 
period of 40% hours sa seitucatin in body font: was 1.1 mm., 
ail, 30.2. By September 18 the transformation period was nearing 
its end and few larvae could be taken od seining at this time. On 
this date, however, a ribbon snake, Thamnophis sauritus proximus, 
was lying on a mat of aquatic vereenen | at a pond near Panrys 
and when captured it disgorged three cricket frogs, one a transform 
ing specimen. 
Pseudacris triseriata triseriata (W1ep)—The three-striped 
tree frog usually inhabits low, swampy areas ag is generally 
abundant where found. Specimens have been taken at Kimmswick, 
Imperial, Sulphur Springs, Barnhart, various places in : Rate Creek, 
Glaize Creek and the Meramec River, and near Danby. When the 
males are singing in the spring their inflated, yellowish-grey throats 
bear a remarkable resemblance to floating fruits of the horse nettle, 
Solanum carolinense. When disturbed, the frogs swim below 
surface and usually emerge amid a clump of grass or faa Many 
seem quite fearless and continue to sing when a hand is little over 
twelve inches distant; for when intent upon their aia they prac- 
