MUSEUM OF COMPARATIVE ZOOLOGY. 137 
EXPLANATION OF PLATES. 
PLATE I. 
_ Fig. 1. Map of Triassic area in Connecticut from Long Island Sound to the north 
bend of the Farmington River, based on Percival’s map in his Geology 
of Connecticut. The numbers in circles refer to localities on the sev- 
eral trap ridges described in the text, and in most cases figured on 
a larger scale in later plates. See page 104. 
Plates II. and III. contain outline maps traced from town maps in county 
atlases, the trap ridges being sketched in black; they cannot claim 
much accuracy, but will probably serve as guides to the localities 
that furnish exposures of critical contacts. 
PLATE ILI. 
Fig. 2. Adjacent ends of Saltonstall and Totoket Mountains. For locality 14, 
see p. 110; locality 15, see p. 111. 
Fig. 3. North end of Totoket Mountain. Locality 4, see p. 107; locality 16, see 
p. 111. ; 
Fig. 4. North end of Higby Mountain. Locality 6, see p. 107; locality 17 and 
17’, see p. 111; locality 24, see p. 115. 
Fig. 5. Chauncy Peak, south end of Lamentation Mountain, and Quarry Ridge, 
~- Meriden. Locality 7 and 7’, see p. 108; locality 8 and 8’, see p. 108; 
locality 19 and 19’, see pp. 112, 113. 
Fig. 6. Notch Mountain and eastern ridges of the Hanging Hills. Locality 9 
and 9, see p. 109; locality 10, see p. 109; locality 19 and 19’, see 
pp. 112, 118. 
PLATE IIL 
Fig. 7. Farmington Mountain and its anterior ridge. Locality 12, see p. 109. 
Fig. 8. Farmington River Gap, at Tariffville. Locality 13 and 13’, see p. 110. 
Fig. 9. Rock Falls of Aramamit River. Locality 23, see p. 114. 
Fig. 10. North end of Lamentation Mountain. Locality 18, see p. 112. 
Fig. 11. Posterior ridges to Saltonstall Mountain. Locality 20, see p. 113; locality 
21 and 21’, see pp. 113, 114. 
