212 



GRIFFIN. 



II. Amphiporus brunneus n. sp. 



Length in alcohol of largest individual 3.3 cms. Breadth 5 

 mms. Color (in life) dark brown or smoky black on dorsum, 

 greenish or yellowish white ventrally. On each side of neck is 

 a pale angular spot. 



Internal Anatomy. Pro- 

 boscis - pore subterminal. 

 Cephalic gland moderately 

 ►^.'N-'-T.'- 's*- ''VO '%\ developed. Cephalic organ 

 ' " /^^A considerably in front of brain. 

 C^^^AoWl Cephalic canals open oppo- 

 -^si-^^^-y site mouth. Intestinal caeca 

 extend almost to brain. An- 

 terior portion of proboscis 

 very long ; in ordinary pro- 

 trusion the stylet-region re- 

 Stylet region of proboscis. The dotted mains within the everted an- 



pockets and stylets filled in diagrammatic- ^^^-^^ chamber. Basal por- 

 ally, the rest from camera lucida drawmg. 



tion of central stylet long, 

 two marginal pockets each containing two (or three ?) stylets.^ 



Habitat and Distribution. On piles and rocks about Port 

 Townsend. 



Fig. 23. Amphiporus formidabilis n. sp. 



12. Amphiporus angulatus (Fabr.) Verrill? 



I have provisionally referred to this 

 .species a form that occurs (though not 

 very abundantly) under stones near low- 

 est low water mark in Sitka Harbor, 

 Alaska. But two alcoholic specimens 

 are now available for description.^ It 

 readily contracts into a thick oblong 

 mass. 



Fig. 24. Aniphiponis brun- 

 neus. Central stylet. Cam- 

 era lucida. 



1 Rhynchoccel surrounded by a thin circular muscle sheath, within which is a 

 layer of longitudinal muscles. 



2 Owing to these two specimens having been collected too late to be packed with 

 the rest of the Alaska material, they were placed in the writer's microscope case, 

 and were therefore saved when the ship went down. 



