208 



GRIFFIN. 



dorsal longitudinal line, and one transverse band at neck (fig. 17, 

 {3), a form almost black and not showing the lines that char- 

 acterize No. 2. All three varieties agree in the much lighter 



ventral portion marked off from darker dor- 

 sum by sharp line of demarkation. Anterior 

 and lateral margins of head in all three va- 

 rieties very light almost white. Eyes nu- 

 merous, distributed along side of head, on 

 each side of demarkation-line between light 

 margin and dark dorsum. The colors keep 



1 



Fig. 17. Emplectone- 

 via viride Stimpson. 

 Showing pattern on 

 head. 



fairly well in alcohol, darkest green, paler, 

 palest olive, and even bluish varieties 

 can be distinguished. Some speci- 

 mens from West Berkeley, California, 

 became gray in alcohol. 



Internal Anatomy very similar to 

 E. gracile. Mouth opens into rhyn- 

 chodeum ; cephalic organs some dis- 

 tance in front of brain ; canals from 

 cephalic organs run forward to open 

 ventrally in region of proboscis-pore ; 

 proboscis-pore^ some distance from tip 

 of head. 



Intestinal caeca do not quite extend 

 to brain. Central stylet of proboscis 

 with very long basal portion, two 

 marginal stylet-pockets are present, 

 each containing five long curved sty- fig. 18. Empledonevia viride 



lets. Ducts from these marginal Stylet and region of proboscis 



pockets appear to be dilatable prox- 



imally (fig. 18). In some specimens 



preserved in alcohol the stylet gland 



and basal portion of central stylet are 



a bluish green in color and contrast 



strongly with the adjoining non-pig- 



mented portion of the proboscis. 



ac. — anterior chamber, cs. — 

 Central stylet, dd. — ducts of 

 marginal pockets, hd. — basal 

 dilation of same. nis. — mar- 

 ginal stylets. ;///. — marginal 

 pockets, b. — basal portion of 

 central stylet. /. — ejacula- 

 tory duct. sg. — stylet gland. 

 rz. — reservoir. 



1 In instances like this where the mouth opens into the rhynchodeum the common 

 opening (" gemeinschaftliche Oeffnung " Burger) will be called proboscis-pore. 



