226 BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



and the three specimens in the Science College Museum, in Tokyo. I 

 have also before me three specimens from Haha shima, in the southern, 

 or Coffin Group, U.S.N.M. Nos. 23899, 33857, and Sci. Coll. Mus. 

 Tokyo No. 48, essentially like the ones from the middle group. These 

 agree pretty well with Hallowell's description, ° except that he does not 

 mention a pale dorso-lateral line which is more or less apparent in all 

 the specimens mentioned above. A single large specimen (Sci. Coll. 

 Mus. No. 50), probably from Chichi shima, is considerably darker, 

 with scarcely a trace of the lateral line, but the duskiness of this speci- 

 men may be due to defective preservation. Of the ten specimens 

 mentioned, six have 24 scale rows around the middle of the body, 

 while four have 26. 



Description (figs. 196-198).—^^?//^; U.S.N.M. No. 33857; Haha 

 shima^ Bonin Archipelago; March, 1904; Owston collection. Ros- 

 tral in contact with fronto-nasal ; nostril round, in the lower portion 

 of a rather large, pentagonal nasal; a small triangular postnasal. 



107 



Figs. 196-198.— Cryptoblepharus boutonii nigropunctatus. 2 x nat. size. 196, top of head; 

 197, SIDE or head; 198, underside of head. No. 50, Sci. Coll. Tokyo. 



in contact with nasal, anterior loreal and first supralabial; no supra- 

 nasal; fronto-nasal slightly broader than long, not in contact with 

 frontal ; prefrontals rather large, in contact with each other, with both 

 loreals, and with anterior supraocular; frontal small, considerably 

 smaller than fronto-parietal, in contact with first and second supra- 

 oculars; four supraoculars, second largest ; f our superciliaries ; fronto- 

 parietal (consisting of the fused fronto-parietals and interparietal) 

 quadrangular, in contact with frontal and three supraoculars, verj^ 

 large; parietals long and narrow, broadly in contact behind fronto- 

 parietal; one pair of large nuchals, in contact behind parietals, and 

 followed by a double series of short, but very wide plates, or scales, 

 which gradually decrease in width backward, merging into the two 

 median dorsal scale rows; first loreal very high and narrow, in touch 

 with first supralabial behind postnasal; second loreal much lower, 

 pentagonal, in contact with two preoculars; the upper suture of the 



a In Hallowell's description "fronto-parietals" is evidently a misprint for fronto- 

 parietal. 



