PLATES 
Following 
Page 
ite 2e Gallssor neweAmenicany Gymipidaey ei. 6 es eae et sae 12 
5. Guanacaste trees in pasturelands near Liberia, Costa Rica; Rio 
Colorado, northwest of Liberia, Costa Rica ................. 28 
4. Near the Rio Colorado, northwest of Liberia, Costa Rica; Volean 
Rincon de la Vieja from the airport at Liberia, Costa Rica. 28 
5. Rio Liberia below Liberia, Costa Rica; open grassland on does 
of Violeany Rincon cd gla aVale) alaeg een ee eon 28. 
6. Looking across pasturelands to the forested slopes of Cerro Santa 
Maria; Hacienda Santa Maria, with wooded slopes above 
obscured eby. Misty. 5 | yah gain. cape ee Cee ee Ne Eee cen 28 
‘-17. Fulgoroidea from Trinidad . eich Ud ie ste ee Re Re 510 
18. Ambystoma lacustris, new species, srl A. velasect Dugés _. 536 
19. Paratypes of Thorius troglodytes Taytor from crest of mountains 
near A CultZInNSOlMV CLACriLZ Usk ee MEN De ae eee nee teeta 536 
20. Bolitoglossa terrestris (Taylor) «a AAS CEES, ASR tein: 536 
21. Bufo canahferus Cope and EM WOph nye dorsalis Duméril and 
Bibron ..0hid wets peas” 3 536 
22: Bufo scoccifer” Copes) ee eo i he ede eee ae ee aaa 552 
23. Bufo marmoreus Wiegmann, Bleuther odactylus r ngetlncns (Cope), 
and Be for cristatus) Wiesmann as eee tenn earn reae 552 
24. Bufo valliceps Wiegmann and Hleutherodactylus augusti 
(LORE EREIS PAOrine ners Onl et Sh dae asaya Gat aes ie ape aS AEN AY ae 552 
AS Le UG) GAA OOK) INENRIOE, go 5.5 be Sac Go ae oc bce aadowccsogvovcen 552 
26: (Ayla sphacota Cope Sa bee Oey, 2th Se che ie ane eee 590 
27. Acrodytes spilomma (Cope) and A. modesta, new species ..... 590 
28. Agalychnis dacnicclor (Cope) and Acrodytes modesta, new 
SPCCIOS jute Stain Me ate RW screws aC Uchiha ela aT ae neha aan ct a eae nt 598 
ZO NIRICCELO YL ORINGLIA Cig LAT CWC Ou a 598 
HO, JEUAAR RD OOIG SOWKOTOHU ISIERB RS oo oe kb oo oe sae 598 
31. Agalychnis moreleti (Dumeéril) © TRAY, Duce SUSI eat Sega eae 598 
32. Microhyla usta usta (Cope) and M. uw. gadovii (Boulenger).... 602 
FIGURES 
Page 
LIVER CONCH AUSIRAN Oeirnt 10,7720 C0, C COC en 85 
Zi PSCUCOUDEUIIUS odie eal bcm ie Me tee Te ac. rs CR ANS RN a 92 
SUMP SCUROLIDEUNUS oa os Lk OE eae 99 
4, Pseudolipeurus, Psedophilopterus, and Strongylocotes............ 102 
BeSErong ylocobes: eh 35) eA Re, ee cho AE UC ee AE 114 
6: Strongylocotes 3.2 i NOS ee 117 
7. Strongylocotes: os. 6 Vee ie ee ls, Cer 120 
ILLUSTRATIONS 
VI 
