176 PROCEEDINGS OF THE ACADEMY OF 



Bright dark bluish-green, with coarser or finer black vermiculations on neck, 

 nape, gular and scapular regions. An elongate, black, light-edged spot above 

 axilla, on each side interscapular region, and one or two each side of nape. 

 Head above, anterior to line connecting angles of mouth, pale brown. End of 

 muzzle to ear \" 9 /// ; ear to vent 4 // 1 /f/ , Anterior limb 3 // 3 /// ; posterior 

 to heel 3"; heel to end digit V 4"'. 



Hah. ? Mus. Brit. 



Of the preceding species of Anolis, sixteen have been derived from the Brit- 

 ish Museum collection. My particular acknowledgments are due to Drs. Gray 

 and Giintber, the directors, for the ample facilities afforded me in the exami- 

 nation of these and of other objects of interest under their care. 



Laemanctus s erratus. 



Occipital prominence shorter and more elevated than in L. 1 o n g i p e s, its 

 border serrated with six prominent angular scales. Front with three pairs of 

 large plates, the two posterior bounded exteriorly by two others. Seven su- 

 perior labials to beneath orbit ; infralabials smaller, lateral scales larger than 

 inlongipes. Scales everywhere keeled ; dorsals a little smaller than abdo- 

 minals. Collar not very distinct. Dorsal crest not elevated on the posterior 

 half of the back. 



A yellow band from loreal region to groin, brown bordered above from orbit 

 to ear. A broader pale lateral band and six brown cross bars on the back. 



This species is said to be found in the Orizaba Valley, Mexico. It is figured by 

 Prof. Dume>il in the Archives du Muse6, 1856, pi. xxi. Specimens are also in the 

 Museums of London and Leyden, the latter of which, through the liberality of 

 Prof. Hermann Schlegel, have served as the types of my description. 



The Laemancti fitzingeri, obtusirostris and undulatus of Wieg- 

 mann, belong to the genus Urostrophus, while th*e L. acutirostris is a 

 true Polychrus. The type specimens of Wiegmann are preserved, under the 

 direction of Prof. Peters, in the museum of the Friederich Wilhelm's University 

 in Berlin. My thanks are due to the Professor for the many facilities which he 

 kindly placed at my disposal, during investigations among these and his own 

 numerous types. 



Uta iigricauda. 



Series of large dorsal scales narrow, embracing seven rows of uniform size ; 

 the scales smaller than the smooth abdominals, keeled, those posterior larger 

 than those in the anterior part of each row. Laterals minute, flat ; caudals 

 largest of all, very strongly keeled ; antebrachials and prefemorals larger than 

 dorsals, keeled. Two dermal folds on each side, and a strong one in front of 

 gular fold, beside a few cross folds in front of shoulder. Ear large, with three 

 small fringe scales. Lateral occipitals small ; frontal long, undivided, pre- 

 ceded by five large scales, of which the posterior pair is in contact on the me- 

 dian line. Five rather broad supraorbitals, separated from marginal row by 

 minute scales. Infralabials five on each side, large, separated by one row of 

 smaller scales from labials: the anterior pair in contact. Eleven and twelve 

 femoral pores. End of muzzle to ear 5 lin. ; ear to vent 1 in. b\ 1. ; vent to end 

 of tail 3 in. 2 1 ; anterior limb 9 1. ; posterior 1 in. 2 1. ; hind foot 6 1. 



Brown above, sometimes very dark, with seven short lateral black coss- 

 bands, sometimes light edged behind, on each side ; never confluent across the 

 median line. Tail black or blackish brown. Head above lighter, with a few 

 superciliary brown specks or cross lines. Each side of abdomen blue from 

 axilla to groin, deepest and nearly meeting other side on the median line. 

 Throat in males orange. 



jlab. Cape St. Lucas, Lower California. From the Xantus collections, (No. 

 3723) Mus. Smithsonian, No. 5307. Mus. A. N. S. Phila. 



This species is nearest U. graciosa, of the Colorado region, but has a 

 shorter muzzle, broader front, and other distinguishing traits. It was found 



[Aug 



