EXPLANATION OF THE PLATES. 



PLATE I. ii. 



Costa Rica Batrachia, natural size, excepting figs. 8a, 9a, and 13a, which are twice natural size. 

 Fig. 1. Cranopsis fa&tidio&us ; la, mouth. Page 96. 



2. Cre.pidius epioticus; 2a, month. Page 97. 



3. Ollotis caerulescens; 3a, mouth. Page 98. 



4. Bufo auritus. Page 99. 



5. Bufo coccifer. Page 100. 



6. Dendrobates lalamancee. Page 102. 



7. Hyla nigripes. Page 104. 



8. Phyllobates hylasformis; 8a, mouth. Page 107. 



9. Lilhodyles podicifer us ; var. D. Page 108. 



10. Lilhodyles melanostictus ; 10a, mouth. Page 109. 



11. Lilhodyles megacephalus ; 11a, mouth. Page 110. 



12. Trypheropsis chrysoprasinus; 12a, mouth. Page 114. 



PLATE II. * \XXH 



Fig. 1. Anolis insignis; one-half natural size. Page 120. 



2. Anolis microtus ; one-half natural size. Page 119. 



3. Anolis pachypus ; natural size. Page 122. 



4. Anolis oxylophus ; natural size. Page 123. 



5. Chalcidolepis melallicus; natural size. Page 116. 



PLATE III. rir 



Fig. 1. Basiliscus plumifrons, natural size; la, head from above. Page 125. 

 2. Basiliscus milralus; head from above, natural size. Page 127. 



PLATE IV. ^ 'It 



Fig. 1. Dendophidium melantropis. Page 134. 



2. Dryophis brevirostris. Page 132. 



3. Hyla elreochroa ; 3a, mouth. Page 105. 



4. Eylodes cerasinus ; 3a, mouth. Page 112. 



PLATE V. ->i ■ 2-7 



Fig. 1. Leptognalhus argus, natural size. Page 130. 



2. Teleuraspis schlegelii, natural size. Page 149. 



3. Bolhriopsis proboscideas, natural size. Page 150. 



4. Hyla uranochroa, natural size. Page 103. 



PLATE VI. * |»C IS 



Heads of Lacertilia and Ophidia, natural size, except figs. 2 and 4. 

 Fig. 1. Mabuia alliacea, from above. Page 115. 



2. Chalcidolepis melallicus; a, above; b, below; twice natural size. Page 116. 



3. Amiva gabbiana ; a, above; b, below. Page 117. 



4. Anolis trochilus, above; twice natural size. Page 121. 



5. Anolis oxylophus, above. Page 123. 



6. Xiphosoma annulalum : in this and the following figures, the superior view is marked 



a, the lateral b. Page 129. 



7. Leplognalhus argus (a). Page 130. 



8. Leplognalhus pietirentris (a and 6). Page 130. 



9. Leptophis etruginosus (a and b). Page 132. 



10. Leptophis saturatus (a and b). Page 133. 



11. Spilotes chrysobronchus (a and 6). Page 136. 



12. Conlia calligaster (a and b). Page 146. 



13. Bolhriopsis proboscideus (a). Page 150. 



Note.— In the Catalogue of Ophidia given on page 95, the species Colobognathus nasalis and 

 Colophrys rhodogaster should be for the present omitted, as they occur in the adjoining State of Nica- 

 ragua. 



etc (|.-)-77 



