84 BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



The following notes were made on the cotypes of Cystignathus 

 albilabris : 



B.M. Nos. 60. 4. 18. 61-64, St. Thomas, Riises Coll.: One adult 

 and three young (head-and-body length of largest being 17.2 mm.). 

 Adult individual : Head-and-body length, 41.2 mm.; transverse diam- 

 eter of tympanum, 2.5 mm.; transverse diameter of eye, 4.7 mm.; 

 anterior edge of eye to nostril, 3.3 mm.; the hind limb being carried 

 forward along the body, the tibio-tarsal joint reaches to center of 

 tympanum; a vertical white line on lower eyelid; white stripe on 

 upper lip indistinct, although it is present on the three young; a 

 distinct tarsal fold; large inner and small outer metatarsal tubercles; 

 long longitudinal dermal folds on sides, with intercalated linear series 

 of smaller dermal ridges, in addition to others irregularly placed; 

 white reticulations appear through brown on the sides; underside of 

 tibia spotted; vomerine teeth in transverse rows far behind level of 

 choanae. 



B.M. Nos. 60. 4. 18. 65-67, St. Thomas, Ruses Coll.: One adult 

 and three young (the head-and-body length of largest being 17.2 

 mm.). Adult individual: Head-and-body length, 42 mm.; trans- 

 verse diameter of tympanum, 2.8 mm.; transverse diameter of eye, 

 4.8 mm. ; anterior edge of eye to nostril, 3.8 mm. ; the hind limb being 

 carried forward along the body, the tibio-tarsal joint reaches to poste- 

 rior margin of orbit; white stripe on upper lip indistinct, although it is 

 present on the three young; other characters the same as in the pre- 

 ceding cotype, except that the sides are more nearly smooth, there 

 being a few scattered dermal nodular elevations in place of dermal 

 ridges; throat, sides of chest, and concealed surfaces of tibia thickly 

 spotted with small brown specks; vomerine teeth in slightly arched 

 transverse rows far behind level of choanae. 



B.M. No. 60. 4. 18. 68, St. Thomas, Riises Coll.: One adult and 

 two young (the head-and-body length of largest being 17 mm.). 

 Adult individual: Head-and-body length, 36.8 mm.; transverse diam- 

 eter of tympanum, 2.2 mm.; transverse diameter of eye, 4.5 mm.; 

 anterior edge of eye to nostril, 3.4 mm.; the hind limb being carried 

 forward along the body, the tibio-tarsal joint reaches to center of eye; 

 white stripe on upper lip indistinct, although it is present on the two 

 young; a sharp tarsal fold; toes with vestigial web at base; throat 

 and sides of chest with closely approximated small brown spots; skin 

 on sides fairly smooth, with no distinct longitudinal dermal folds or 

 ridges, though there are a few scattered nodular elevations; minute 

 supernumerary tubercles on plantar surface of foot; vomerine teeth 

 in transverse rows far behind level of choanae. 



Cope states that his supposedly new species, Cystignathus labialis 

 (U.S.N.M. Nos. 31300-05), was based on young specimens in which 



