Bemerkungen über die Phyllopoden. 149 



Lepidurus viridis Baird Ann. of nat. bist. 1852. Second 

 Series Vol. X. p. 56., nach der Angabe 2 Zoll lang-, 1 Zoll 

 breit, aus Van Diemensland. Ich kann ans der Beschreibung 

 nicht die Charaktere entnehmen, auf welche ich bei der Un- 

 terscheidung der andern Arten besonderes Gewicht gelegt. 

 Die Originalbeschreibung lautet: Body of animal , including 

 the Aap of tail segmenl, about two inches long and one 

 broad. The carapace and whole body are of a fine green 

 colour, the carapace covering about two-thirds of the abdo- 

 men ; the edges of the notch in the posterior part of the ca- 

 rapace are strongly toothed , and those of the inferior half 

 of Ihe carapace are very finely serrated; these teeth are of 

 two sets, the one much larger than the others; the larger 

 teeth are of a green colour, tipped at the point with dark 

 brown; the are about eleven in number , and between each 

 there are two or three much smaller ones interspersed. The 

 appendages of the first pair of feet are very short and small, 

 scarcely extending beyond the edge of the carapace. The 

 Segments of the abdomen are each studded with a row of 

 stout , slightly curved spines of a green colour tipped at 

 their edges with dark brown. The tail Aap is oval , keeled 

 down the centre, the keel being beset with short sharp spi- 

 nes, and the edges of the Aap are finely serrated. The long 

 setae of the tail are nearly the lenghth of the whole animal, 

 and are covered with short hairs. 



4. A. longicaudatus. 

 Apus longicaudatus J. Le Conte Ann. of nat. bist, of the 

 Lyc. of New-York IV. p. 155. Abbild. (Wiegm. Arch. 1847. 

 II. p. 203.). 



Nordamerica, Rocky-Mountains zwischen Lodge-poolcreek 

 und Crowecreek. 



Diagrnosis specieruin. 



a. Lamina setis caudalibus interiecta nulla, colore cor- 

 poris subflavo, primo pede longissimo, multo lon- 

 giore quam secundo. 



A. cancriformis, Scuto ovali, sinu posticodentibusulrin- 

 que c. 12 brevibus, simplicibus, Serie rontinu9 armato, pedum 



