PLEURODELIDA. — CIV. 181 
511. D. fusca (Rafinesque). Brown above, with gray or pur- 
plish spots or shades, becoming blackish with age; marbled below ; 
eyes prominent; tail as long as head and body. L.4. Mass. to 
Ohio and S.; common in springs; remarkable for its activity. 
Represented from Ind. S. and W. by var. auriculata Holbrook, with 
small red spots on sides and sometimes a dark ear-spot. (Lat., 
dusky.) 
aa. Costal grooves 12; tail compressed and keeled. 
512. D. nigra (Green). Uniform black; body stout; palatine 
teeth never wanting. L. 6. Penn. to Ill. and S., in mountain 
springs. 
Famity CIV. PLHURODELIDA. (Tue Newrts.) 
Vertebre opisthocelian; carpus and tarsus ossified. Palatine 
teeth in two series diverging backward; no parasphenoid teeth; 
skull with a bony post-fronto-squamosal arch, a skeletal character 
which separates this family from the European Salamandride. 
Genera 5; species 16; chiefly of Europe and Asia. 
a. Tongue small, thick, oval, attached by nearly its whole inferior surface; 
toes 4-5, outer and interior on hind foot rudimentary; tail compressed. 
Diremictrytus, 261. 
tie. Heaie S 
261. DIEMICTYLUS Ratfinesque. (dis, two; fur, half; 
ddxrvdos, toe.) 
| 513. D. viridescens Rafinesque. Newt. Evert. Ert. Above 
olive green or reddish of varying shades; lemon yellow below; 
each side usually with a row of several rather large scarlet spots, 
each surrounded by a black ring; back with a pale streak; belly, 
with small black dots; head with three longitudinal grooves; 3 
large pores behind eye. L. 3}. E.U.S., abundant N. and N. E.; 
in ponds. 
Var-tminiatus—Rafinesque, the Rep Ert, is entirely similar, 
but bright vermilion red, and with the skin rougher. It is found 
jin the same region but away from water, under stones, etc., coming 
out after rain. It is probably a form of the preceding, its pecu- 
liarities being due to life out of water. (Lat., greenish.) 
Orpver XXVII oesetten: (THE TaILLEss BaTRA- 
CHIANS.) 
Body short and broad; all four limbs present, the hinder limbs 
long and strong, adapted for leaping; lowgr jaw usually tooth- 
less; tail wanting in the adult. Young (tadpole) fish-like, with 
broad head, external branchie, a long tail, no limbs and no teeth; 
the intestinal canal very long, adapted for a vegetable diet; from 
