Cope.] l-OO [Dec. 19, 



orbital or infrafossal spots. One row of lai'ge dorsal spots. Twenty- 

 three rows of scales ; superior labial scuta 11-12 ; subcaudal scutella 

 22-29. 



There are usually two rows of small spots on each side of the large 

 dorsal series, and sometimes the latter breaks more or less into two rows. 

 In a specimen from Guanajuato (Duge.s), the dorsal spots continue into 

 the small lateral spots, forming lateral cross-bands as in Crotalus enyo. In 

 a specimen from the valley of Toluca, the lateral spots are obsolete, and 

 there are 25 rows of scales. The anterior part of the superior preocular is 

 cut off to form a second loreal behind the usual one. 



Tlie Crotalus intermedius of Fischer is near this species, but has several 

 peculiarities according to Fischer, which may distinguish it. 



Hab. Guanajuato, Duges ; Jalapa, Flohr ; Toluca, Vasquez. 



Crotalus basiliscus Cope. Proceeds. Academy Phila., 1864, p. 66. 



Crotalus rJiomhifer Latreille, Duges La Naturaleza, Mexico, 1877, 



p. 22. 

 This species, originally discovered by Xantus at Colima, is generally 

 distributed in Mexico. I have not seen it from east of the plateau. Duges 

 has obtained it at Guanajuato. 



IV. Aruba, Leeward Islands ; Julien. 



The present collection was made by Prof. A. A. Julien, of Columbia Col- 

 lege, New York. Aruba is the westernmost of tlie series of islands which 

 lie in the Caribbean sea along the north coast of South America. Its posi- 

 tion is but a short distance to the eastward of the moutli of the Gulf of 

 Venezuela. Its position gives its fauna considerable interest. The birds 

 brought by Professor Julien, have been already reported on in papers pub- 

 lished by the New York Academy of Sciences, by my friend, George N. 

 Lawrence. 



1. Paludicola brachtops Cope. 



2. GONIODACTYLUS ALBOGULARTS D. & B. 



3. GONIODACTYLUS VITTATU8 Wicgm. 



4. Phyllodactylus julieni, sp. nov. 



This species is neai'ly related to the P. tuherculosus Wiegm., but may be 

 distinguished by three characters. First, the abdominal scuta are less nu- 

 merous, forming about thirty transverse series between axilla and groin ; 

 while those of P. tuherculosus are in at least forty cross rows. Second, the 

 dorsal tubercles form uninterrupted longitudinal series, no small scales in- 

 tervenhig between those of one row ; although small scales separate those 

 of different rows. Third, there are three scuta behind the mental. In 

 most specimens of the P. tuherculosus there are two ; in one only I find 

 three. There are five narrow, straight blackish cross-bands between the 

 axilla and groin ; one in the front of the arms, and one across the nape, a 

 brown band posterior to the eye. These markings become obsolete in the 



