266 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



2. Yellowish, pale yellow with tinge of orange, dull orange, ocher, 

 buff, or yellowish brown; margins of head pale or colorless; 

 with 3 to 7 irregular red, purple, or black ocelli, of which the 

 most anterior are largest flavescens 



3. Body contracts by shortening and thickening — not by coiling in 

 spiral; regenerative capacity very slight ruber 



3. Body contracts by coiling in spiral ; regenerative capacity almost 

 unlimited vegetus 



4. With conspicuous median dorsal stripe, but without transverse 

 markings; dark brown or olive, with median dorsal stripe of 

 white or yellow extending whole length of body and widening 



out on head to form broad white marking bilineatus 



4. Without conspicuous median dorsal stripe 5 



5. Body with narrow transverse rings of paler color 7 



5. Body without transverse rings of paler color 6 



6. Pink, rosy, flesh color, or pinkish red, sometimes with tinge of 

 blue; tip of head white both above and below, sharply marked 

 off from rosy color of body ; often with bluish tinge after preser- 

 vation rubescens 



6. With a single narrow whitish band connecting posterior ends of 

 cephalic furrows on dorsal side of head. Body and head dark 

 reddish brown or purple torquatus 



7. Green or brown, with numerous narrow white or yellow rings 

 at irregular intervals; head with white ring about midway be- 

 tween brain and tip geniculatus 



7. Deep brown or black; middle of head without white ring . . 8 



8. Deep brown, chestnut, or slaty, sometimes with greenish tinge ; 

 with narrow transverse pale yellow rings at intervals along 

 whole length of body; with 7 to 15 very inconspicuous, fine, 

 hairlike longitudinal lines of yellow on dorsal surface; tip of 

 head white, usually with 2 orange-colored spots . . . pictifrons 



8. Brown, greenish black, or bluish black; without longitudinal 



lines atrocaeruleus 



21. Lineus atrocaeruleus (Schmarda), 1859 

 (Plate 24, fig. 4) 



Meckelia atrocaeruleus Schmarda, 1859; Lineus atrocaeruleus Burger, 

 1896; Isler, 1901. 

 A common species. Color greenish black or bluish black with numer- 

 ous white rings at intervals along entire length of body. An inconspicuous 

 white spot surrounds proboscis opening, sometimes extending posteriorly 



