LARVAE OF DECAPOD CRUSTACEA 



425 



Most of the samples in which these Phyllosomas occurred were taken in deep water, 

 but as the hauls were generally continued to the surface, they offer little evidence 

 concerning vertical distribution. A few of the hauls (Sts. 100, loi, 102, 1377) prove, 

 however, that the larvae do reach very considerable depths, even to 2480-2580 m. The 

 specimens from deep water are nearly all in the last stage. Three specimens of the 

 Puerulus stage were caught at 250 m. at St. 100, about 170 miles from land and in 

 an ocean depth of over 3000 m. 



Fig. 30. Palinurellus'i , 4.7 mm. St. 1580. 



Genus Palinurellus, Von Martens.? (Figs. 30, 31) 

 St. 1580. 8° 44' S, 41° 50' E. 450-0 m. One specimen. 

 Length 47 mm. Greatest width 3-3 mm. Eye 1-3 mm. ; eye-stalk 075 mm. 



