PSEUDORHABDIUM 181 



labials; mental small, in contact with anterior chin shields, 

 and separating first labials ; 3 labials touch anterior chin 

 shields; second pair of chin shields slightly smaller than first; 

 eye very small; anal undivided; ventrals, 140; subcaudals, 22; 

 scales smooth, in 15 rows. 



Color in life. — Above very shiny, more or less iridescent, dark 

 blackish brown to bluish brown ; about neck is a more or less 

 distinct yellow collar (dim or almost wanting in adults), formed 

 above by three or four small yellow spots ; a cream-colored 

 spot on fifth upper labial ; below canary to yellowish cream with 

 a dark area on outer edge of each ventral; posterior ventrals 

 mottled, and subcaudals almost uniformly dark; occasional dark 

 areas on middle part of ventrals. 



Measuremmits of the type of Pseudorhabdium mcnamarx Taylor. 



mm. 

 Total length 242 



Snout to anus 220 



Tail 22 



Width of head 5.5 



Width of body 5 



Variation. — Males and females differ in the number of ven- 

 trals and subcaudals, the averages being for males : ventrals, 

 131; subcaudals, 28; for females, ventrals, 142; subcaudals, 22. 

 Four specimens show the postocular fused with the supraocular, 

 and in No. 197 a preocular is present. There is some variation 

 in the relative length and width of the frontal. In some speci- 

 mens these are equal and in one or two the length slightly 

 exceeds the width. The females have the underside of the tail 

 uniformly dark, while the males have it mottled and lighter. 

 Nos. 192, 193, 194, and 195 have the second and third lower 

 labials fused, thus leaving only two labials touching the first 

 chin shields. 



Remarks. — The species is rather common at altitudes of 800 

 to 900 meters on Canlaon Volcano. No specimens were taken 

 at a higher or lower altitude. They were found under logs and 

 rotting trash. They feed on earthworms and are in turn 

 preyed upon by Cyclocorus lineatus, which is plentiful in the 

 same locality. Specimens were usually found in pairs, a male 

 and a female, in the same place. The females taken in Decem- 

 ber contained three undeveloped eggs. The species is named 

 for Mr. Homer McNamara, superintendent of the La Carlota 

 Agricultural Station, who rendered able assistance in making 

 collections on the volcano. 



