HARRIMANIA MACULOSA II5 



spaces of other species. But to this suggestion T do not attach much 

 importance. 



GENERAL REMARKS. 



From this brief diagnosis there is no doubt that Harrtmania 

 mactdosa belongs to the family Balanoglossidae, if we accept 

 Willey's proposal to separate the Enteropneusta into families, 

 as I am disposed to do. Of the two genera hitherto known into 

 which the species of this family naturally group themselves, 

 Balanoglossus and Dolichoglosstis^ Harrimania is unquestion- 

 ably closer of kin to Balanoglossus. From this, however, it is 

 clearly set off by the -persistence of the esophageal notochord 

 in the adult animal^ the invasion of the pharyngeal region by 

 the skeleton crura, and probably by the peculiar structures 

 at the anterior ends of the trunk coelom. 



This species was found at Prince William Sound and Kadiak, 

 Alaska. At Prince William Sound it was collected at two 

 points, Orca and Port Valdes. All the specimens from 'the latter 

 place were taken by Dr. Wesley R. Coe, to whom I am indebted 

 for well-preserved specimens, as I did not myself do any col- 

 lecting at that point. 



It is an interesting and significant fact that this ani^nalis not a 

 burroiver in the sense in which most Enteropneusta are. It 

 lives under stones, where it often makes its way through the 

 mud at the plane of contact between the stone and the earth. 

 So far as my observations have gone it rarely plunges directly 

 into the ground, as do other species. In collecting, one turns 

 over the rocks and picks up the animals as he does various holo- 

 thurians, etc., and does not need to dig in the mud for them. 

 At Prince William Sound, where we found it in by far the 

 greater abundance, it was collected at extreme low tide only. 

 At Kadiak, however, the few specimens secured came from 

 nearer high water mark than I have ever before seen Enterop- 

 neusta living. These two facts relative to the animal's life 



' Spengel suggested these terms as subgeneric designations for the short and 

 long proboscised species, respectively, of the genus Balattoglossus as restricted 

 by him. The knowledge obtained since Spengel wrote, added to the considera- 

 tions which led him to suggest such a subdivision of the genus, convinces me 

 of the wisdom of recognizing the two groups as distinct genera. 



