188 PROCEEDINGS OF THE ACADEMY OF 



Diploglossus stenurus. 



Sides vertical : outline of body contracted at axillae ; head distinct, muzzle 

 obtuse : tail depressed at base, much compressed throughout the remainder 

 of its length, twice as long as from vent to opposite auricle. Extremities 

 pressed to the sides not meeting ; toes compressed, very unequal. Scales in 

 forty-two longitudinal series, each with 26 lines and a strong median keel. From 

 orbit to end of muzzle equal to width between orbits. Postoccipital smaller 

 than interoccipital. Five supraorbitals. Internasal longer than in D. 

 o c c i d u u s, nine-sided, the anterior angle right, the latero-posterior pro- 

 duced. Lateral borders of frontal curved. A rhombic postnasal ; two frenals 

 longer than high ; nine supralabials, suborbital over 6th and 7th ; four pairs 

 of large infralabials. Maxillary and mandibular teeth subbicuspid, with an 

 antero- lateral groove. Length from muzzle to vent 5 in. 10 1. ; tail 9 in. 1 

 lin. ; posterior extremity 2 in. 



Color above brown, with occasional spots formed by a deeper brown scale. 

 Sides with vertical undulate light bars, darker bordered, which are subdivided 

 superiorly so as to form longitudinal series of light spots. Top of head uni- 

 form. Tail with light vertical bars. Beneath yellowish. 



Bab. Hayti. Found near Jeremie, by Dr. A. F. Weinland, whose collec- 

 tion is in Prof. Agassiz splendid Museum at Cambridge. Beside species 

 described in this memoir, Dr. "Weinland obtained the types of the previously 

 unknown genera Panolopus and Ialtris. 



In this species and the D. occiduus (Celestus Or.), in theOneyda sagr ae 

 {Diploglossus part. Gray,) and Panolopus costatus, I have observed that 

 the slender quasi- squamous terminal third of the tongue, is retractile within 

 the other portion, which covers it as a sheath. This is not mentioned by 

 the French herpetologists ; Wiegmann does not mention it in Herpetologia 

 Mexicana, but says in Archiv f. Naturgesch. 1837, p. 129, " * lingua * sub- 

 parte basali, aquamarum linguam forma referenti, quasi emergente.'" It is a 

 structure probably characteristic of the Diploglossinse. It does not occur 

 in* Siderolamprus, which is allied to Plestiodon, though resembling Diplo- 

 glossus in the plating of the head. 



On Neosorex albibar bis. 

 BY E. D. COPE. 



Of the twenty well distinguished species of shrews- which Prof. Baird,* 

 enumerates as inhabiting the United States, one only exhibits that peculiar 

 modication of structure which is indicative of his genus Neosorex. This animal, 

 the N. navigator, Cooper, has been found in Washington Territory. It 

 is, therefore, a matter of some interest that the present article introduces to no- 

 tice a second species which the author discovered at the Profile Lake, in the 

 Franconia Mountains, New Hampshire. In September, 1859, two specimens 

 were seen swimming in the Lake about forty feet from the bank : their motion 

 was undulatory, their backs alternately appearing above, and disappearing 

 beneath the surface of the water. They were caught under stones upon the 

 shore, where they had taken refuge. This aquatic habit, so little known 

 among American Soricinoe, would be inferred from comparison with the water- 

 loving Crossopodes of Europe, where we find the feet similarly fringed with 

 a border of stiff hairs. 



N. albibarbis as compared with the navigator has a shorter tail, 

 and a shorter hind foot. The color of the thorax and abdomen is also much 

 darker. 



2 55 44 



Dental formula . The internal process of the superior incisor 



2 22 33 



* In vol. viii. of the Pacif. R. R. Rept. 



[April, 



