360 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 92 
medially, or more; high mountains near the southern edge of the plateau, 
known only from Zempoala, Morelos and Mexico_____~ jarrovii sugillatus 
Dorsal scales on lower foreleg but little if any smaller than those on upper 
foreleg; no dark streaks in lateral belly patches; nuchal collar Jess than 
four scales long middorsally; eastern mountains of Mexico, from northern 
Querétaro south into Hidalgo and possibly central Veracruz 
jarrovii immucronatus 
8. Supraoculars essentially in one row; if an outer row is evident, it is composed 
of scales much smaller than those of inner row, and usually number no 
more than two; mountains of western Mexico, from Nayarit north into 
southern Arizona and INNew Mexicoo2—=--. =) == ae ee jarrovii jarrovii 
Supraoculars in two rows, those of outer row a little smaller than those of 
inner» usually: numbering, three or) more== 22 32 el ee eee 4 
4. Adult males black above and below, with orange areas and spots on sides of 
head, belly, and tail; only throat, underside of tail, and posterior surface 
of hind leg not black; females somewhat similar, very dark above, the collar 
poorly defined; young with poorly defined, narrow, light borders on neck 
collar; dorsal scales average 87.5; southeastern Coahuila__ jarrovii oberon 
Adult males light brown above, with very broad, very well defined nuchal 
collar; a median area on belly white except in very largest males; sides 
of abdomen blue, black edged; females and young with more distinct light 
borders on nuchal collar; dorsal scales average 40.6; central plateau region 
from central Mexico (State) north to northern Zacatecas___ jarrovii minor 
SCELOPORUS MELANORHINUS CALLIGASTER, new subspecies 
Holotype —vU.S.N.M. No. 112201, Acapulco, Guerrero. 
Paratypes—U.S.N.M. Nos. 112199-112200, 47732, topotypes; No. 
112186, Coyuca, Guerrero; Nos. 112202-112203, 4 kilometers north of 
Apatzingan, Michoacin; San Blas, Nayarit (Nos. 51384-51389, 64667) ; 
“Guadalajara,” Jalisco (Nos. 24925-24926); Colima (Nos. 31496, 
58159) ; Tamarindo, Guerrero (No. 47731). Also EHT-HMS Nos. 
8279-8299, Hda. El Sabino, Michoacan; Nos. 8302-8310; Acapulco; 
Nos. 8267-8270, Hda. Queseria, Colima; Nos. 8278A, 8271-8278, Hda. 
Paso del Rio, Colima. Univ. Mich. Mus. Zool. No. 80070, Hda. Paso del 
Rio, Colima; No. 80069, Hda. Gloria, Colima. 
Diagnosis.—Similar to S. melanorhinus melanorhinus, except femo- 
ral pores usually (84 percent) less than 20 on each side; lateral belly 
patches usually confluent medially in adult males. 
Description of holotype—Adult male, 85 mm. snout to vent; dorsal 
scales 27; femoral pores 17-18; lateral belly patches partially confluent 
medially. 
Comparisons.—This subspecies is distinguished from typical mela- 
norhinus largely upon the basis of average femoral pore count. Ninety- 
three counts of 46 specimens from Guerrero north show a range of va- 
riation from 17 to 24, average 19.2, with 16.1 percent of the counts over 
20. Fifty-eight counts of 29 specimens of typical melanorhinus from 
Oaxaca show a range of variation from 18 to 27, average 21.6, with 77.6 
percent of the counts over 20. 
