246 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



and first superciliary; third with first superciliary; a long subocular 

 lying above the sixth and seventh (or seventh and eighth) supralabials, 

 which it scarcely displaces; 10 supralabials on the left side, 9 on the 

 right; four temporals in the first row, forming a semicircle behind the 

 eye; mental very small, not differentiated except by position from the 

 neighboring infralabials, followed by a large unpaired postmental; 



Figure 67.—Celestus costatus: a-c, Top of head (a), side of head (i), and chin (c) of U.S.N.M. 



^No. 61931, from Laguna, near Samana, Dominican Republic, X IV2; d, top of head of 

 U.S.N.M. No. 10260, from Puerto Plata, Dominican Republic (type of C. rugosus Cope), 

 X 2; e, top of head of U.S.N.M. No. 12145, from near Port-au-Prince, Haiti (type of C. 

 weinlandii Cope), X 2. 



four pairs of chin shields, the first two pairs of which are in contact 

 with the infralabials; ear opening roundish, about one-half the diame- 

 ter of the eye opening on the left side of the head, smaller still on the 

 other side; body elongate, the tips of the adpressed fore limbs and 

 hind limbs just failing to meet; 43 scales around the body anteriorly, 

 39 posteriorly; 100 dorsal scales in a straight line between the occipital 

 and a point du'ectly above the vent; 60 ventrals from the anal plates 

 to the center of the breast level with the axillae ; dorsals and laterals 



