99 . 335 



Forekomst. Harger skriver (op. cit. n° 4, p. 381): «This species was described 

 by Stimpson from Charleston, S. C. Most of the specimens in the collection are from 

 Vineyard Sound!, where it occurs sometimes in great abundance, and is common 

 especially during the winter. It is found swimming about in shallow water, and may be 

 taken by a scoop-net, and it is found also in lobster pots. It was dredged in 4.5 fathoms 

 off Block Islands! near the eastern end of Long Island Sound, in 1874, but has not yet 

 been found north of Cape Cod.» Derpaa, giver Harger en speciellere Liste, hvortil hen- 

 vises. — De to af mig undersøgte Exemplarer ere tilbyttede fra A. ,'\I. >'orman . der vist 

 har faaet Arten fra Nordamerika. 



Sammesteds skriver Harger: ^Length of large specimens -32°'°', breadth 10"°™, 

 but usually smaller; 22"°" long, 7"°"° broad. The ground color in life is yellowish, with 

 reddish hro\\n on the anterior margin of the head and on the posterior margins of the 

 segments, especially in the dorsal region, where the segments are also marked with black 

 dots. In the life the body is somewhat translucent in the thinner parts.» — Harger 

 har ogsaa i op. cit. ii°4 sammenstillet Artens rigtige Synonymi indtil 1878. 



Leidy meddeler lop. cit. ii°li. at han, gaaende ved Strandbredden ved Beach Haven, 

 New Jersey, fandt "here and there a dead crab, Callinectes hastatus, lying on the sand, 

 near the last high tide mark. The crabs observed happened to be all females and they 

 appeared to have died recently, as some were quite fresh and showed no signs of decom- 

 position. Others, broken open by removing the carapace, were found to have the body 

 cavity swarming with a living isopod. the Cirolana concharum. wliich had preyed upon 

 the organs and were variously colored by the food with which they were gorged. From 

 a single crab there were taken 108 of the Cirolana ranging from 15 to 22 mm. in length 

 by 5 to 7 mm. in breadth.» — Den samme Forfatter anfører i op. cit. n°3, at han senere 

 ogsaa har fundet den samme Cirolana i døde Stykker af Platyonicliibs ocellatus. 



Lockwood lop. cit. n°l, her refereret efter Science, I!,, 1883, p. 664l meddeler 

 et interessant Fund af denne Art. I en voxen Hun af Krabben Callinectes hastatus Ordway, 

 funden ved New Jersey, fandtes 23 ^U Tomme lange Exemplarer af Cir. conchanim 

 (bestemte af Hargeri i Dyrets venstre Side. «The ovaries and the tissues on. the left side 

 were completely honeycombed.» «With these predaceous wolves, literally consuming its 

 (Krabbens) inwards, it surely would soon succumb.» Resten af Lockwoods Antagelser 

 forbigaas, da de dels ere usikkre, dels utvivlsomt fejlagtige. 



Denne Art er kun kjendt fra den af Harger omtalte Kyststrækning. Naar G. O. 

 Sars lop. cit. n"?, p. 61i skriver, at den af ham «først paa Storeggen observerede og 

 nylig af Dr. Hoek fra den hollandske Nordpolexpedition beskrevne Form inemlig C. microph- 



ihalma Hoeki stemmer fuldslu?ndig overeens med den amerikanske Form», nemlig 



C. conchanim^ saa er dette urigtigt. Sars har ogsaa senere lop. cit. n°4, p. 29| optaget 



43' 



