McMURRICH 



NOTES ON SOME CRUSTACEAN FORMS 



61 



The abdomen is elongated and cylindrical, and consists ot four 

 joints exclusive of the furca. The first joint is much longer than any 

 of the others, about half as long again as the fourth; the second is 

 about half as long as the fourth and the third approximately two- 

 thirds the length of the second. The furcal appendage is short and 

 bears a number of long setae, three at the extremit}^ of each lobe and 

 about six in the interval between these (Fig. 16). 



A search for the adult Dendrogaster in the body-cavity of So- 

 laster evdeca was without results, but the search from force of circum- 



Fig. 16. Dendrogaster larva. Last abdominal 

 segment and furca. 



stances was confined to a very limited number of individuals. Whether 

 the larva obtained is a new species or identical with D. astericola 

 cannot satisfactorily be determined; it seems to differ in certain 

 details from the description by Knipowitsch cited above, but this 

 description is merely a preliminary notice and the fuller account of the 

 species"^ is at present inaccessible. The fact, however, that a Dendro- 

 gaster very similar to, if not identical with, D. astericola occurs on the 

 Western Atlantic coast seems to be worth v of record. 



^N. Knipowitsch. Beitrâge zur Kenntnis der Gruppe Ascothoracida. Trav. 

 Soc. Nat. St. Petersburg. XXIII, 1892. 



