Il6 COE 



viz., in E. riofaccitm the cerebral sense organs are very small, 

 and lie far in front of brain, while in E. burgcri they are 

 remarkably large for the genus and lie only slightly in front of 

 brain. 1 The practical absence of cephalic glands is in accord 

 with most species of the genus. Neither Burger nor Griffin 

 makes any statements in regard to the proboscis, which usually 

 presents the most tangible specific characters. 



6. AmpAiporus imparispinosus Griffin. Sitka, Alaska ; Puget 

 Sound. 



7. A.formidabilis Griffin. Alaska and Puget Sound 



8. A. brunncus Griffin. Port Townsend, Puget Sound. 

 Presents the following peculiarities : Length in alcohol 3. 3 cm. ; 

 width 5 mm. Color in life dark brown or smoky black dorsally, 

 greenish or yellowish white ventrally ; on each side of neck is a 

 pale, angular spot. Cephalic glands moderately developed ; 

 cephalic sense organs considerably in front of brain. Intestinal 

 cseca reach nearly to brain. Basis of central stylet long ; two 

 lateral pouches with two (or three ?) stylets each. 



In some respects this description agrees with the characters 

 of Parancmcrtcs'pcrcgrinci) which is common in Puget Sound, 

 but on the following page (p. 213) the species is represented as 

 bearing " a more or less general resemblance to A. angulatus." 

 There can hardly be said to be the slightest resemblance be- 

 tween P. pcrcgrina and A. angulatus , so that even with Griffin's 

 notes and material at hand, there being no specimens of this 

 form it is impossible to determine to which, if any, of the des- 

 cribed species this A. brunncus belongs. For the present it is 

 necessary therefore to consider it as a distinct species. 



9. A. angulatus (Fabr.) Verrill. Sitka and Redout Bay, 

 Alaska. Doubtfully referred to this species by Griffin ; several 

 varieties obtained. This species is abundant along the whole 

 coast, from Bering Strait to Puget Sound. 



10. A. drcpanophoroidcs Griffin. No locality given. Length 

 4-5 cm. or less ; form short and stout ; color red above, white 

 beneath ; eyes numerous, in rows along antero-lateral margins of 

 head. Cephalic and submuscular glands prominent. Cerebral 

 sense organs large, situated beside brain and extending pos- 



1 Coe, Proc. Wash. Acad. Sci., in, p. 26, 1901. 



