106 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 91 



(U.S.N.M. No. 5285, type) ; Mirador (U.S.N.M. Nos. 6369 [3], 12112, 

 25034, 46452^6453) ; Orizaba (U.S.N.M. Nos. 12117, 30358) ; Potrero 

 Viejo (U.S.N.M. Nos. 109767-109768; D. McH. Forbes No. 256; 

 EHT-HMS No. 5528) ; Tequeyutepec, 7 miles west of Jalapa 

 (U.S.N.M. Nos. 109769-109773; D. McH. Forbes Nos. 386-388) ; San 

 Jose de Gracia (EHT-HJMS No. 5529). 



CONIOPHANES FISSIDENS DISPERSUS, new subspecies 



Holotype.—BU.T-HMS No. 5531, male, El Limoncito, Guerrero, 

 collected by E. H. Taylor. 



Paratype.—EB.T-B.MS No. 5532, same data. 



Diagnosis. — Scales in 19 rows ; males with supraanal tubercles ; su- 

 pralabials 8 ; ventrals 120 and 122 in two males ; caudals 81 in one male ; 

 ventrals minus caudals 41 in one male ; spots on belly small, scattered, 

 not forming regular series; middle and posterior part of belly may 

 be completely unspotted (except ends of ventrals) ; white dorsolateral 

 stripes on nape short, diffuse ; inner border of dorsolateral light stripe 

 poorly defined on tail, not evident in front of anus ; no spots or irregu- 

 larities of pattern in dorsal area between lateral stripes ; latter poorly 

 defined, diffuse. 



Descnption of holotype. — ^Rostral much broader than high, portion 

 visible from above a little less than half length of internasals ; latter 

 two-thirds length of prefrontals; frontal pentagonal, anterior edge 

 straight, its length (4.8 mm.) greater than its distance from tip of 

 snout (4.3 mm.), less than maximum length of parietal (5.9 mm.), 

 subequal to distance of frontal from posterior edge of parietal (not 

 in median line); sides of frontal parallel; nasal large, divided; a 

 large loreal; one preocular; two subequal postoculars; temporals 

 1 + 2 + 3, the upper secondary and upper tertiary fused to form an 

 elongate scale similar to primary temporal ; eight supralabials, fourth 

 and fifth entering orbit, seventh highest and largest, sixth next largest; 

 nine infralabials, five in contact with chin shields; mental separated 

 from anterior chin shields, which are a little longer and larger than 

 posterior. 



Dorsals in 19-19-15 rows, smooth, without pits ; ventrals 122 ; caudals 

 81 ; anal divided. 



Ground color light grayish brown, somewhat darker near middle of 

 body and on sides; a broken, dim dark line extending along adjacent 

 edges of fourth and fifth scale rows, descending posteriorly to middle 

 of fourth ; a broken, scarcely discernible vertebral dark line ; a dorso- 

 lateral area somewhat lighter, well defined only on nape, where it is 

 white ; a small white spot three scales back of tertiary temporals, even 

 with end of dorsolateral light line, which terminates two scales behind 

 light nuchal spot; all dorsal scales with a dark edge. A dark stripe 



