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MARINE INVERTEBRATA OF GRAND MANAN. 49 



Cerapus fAsciatus, St., n. s., Fig. 35. Female, elongated, head narrow, thorax 

 very broad in the middle, where the height equals scarcely one-third of the breadth ; ^■^'^ y 

 abdomen very slender throughont its loiigtli, being about one-half the width of the ^ 



thorax. Antenn;v very slender, with long llagella, the inferior arising much behind, J-^^ 



and somewhat longer than the superior ones, which are greatly thickened at their 

 bases. Legs of the first two pairs with small subchcliform hands, those of the 

 second i)air largest. The remaining thoracic legs are slender, the third and fourth 

 pairs with oval basal articles, and the last pair longer than the others. Natatory 

 feet of great length. Caudal stylets very long and slender, those of the first pair 

 projecting beyond the others, those of the last pair short and rather thick, each 

 terminating in two short curved processes. Ground color wine-yellow, with narrow 

 transverse bands of dark-reddish Ijrown, one to each segment, on the back. The 

 small epimera of the last three thoracic segments are also dark brown. Eyes rather 

 large, rounded, Ijlack. Length, 0.32 inch ; proportions of other parts : greatest 

 breadth, .23; length of superior antenna), .5; of the last pair of legs, .44; of the 

 abdomen, .43 ; of the first pair of caudal stylets, .19. The figui'e represents the 

 caudal stylets, seen from above. It was dredged in thirty-five fathoms, on a gravelly 

 bottom, in the Hake Bay. The degree of elongation and flexibility of the terminal 

 articles of the antennas seems a character of insufficient importance to separate this 

 species from Cerapus. 



Orchestia grtllus, Gould, Inv. Mass., 334. TaVdrus gryllus, Bosc, Hist. Nat. 

 des Crust., ii. 104 (?). Say, Journ. Acad. Nat. Sci., i. 386. This species is found 

 plentifully among the half-dried Ftici, which line some of the shores just above 

 high-water mark in large quantities. It is of a dark-yellowish color, very glossy, 

 Avith three dark olive longitudinal bands along the back. It is very active, leaping 

 to considerable distances. I have never found it inunersed, although some moisture 

 is, of course, necessary to its existence. The species found in similar po.sitions in 

 Massachusetts Bay is undoubtedly the same, but there are doubts whether it is 

 identical with that described by Bosc, from the salt marshes of South Carolina. 



Allorcuestes littoralis, St., n. s.. Pig. 30. Small, robust, rounded above, smooth 

 and shining; eyes very large, black, rounded, not far removed from each other; 

 superior antennje about two-thirds as long as the inferior ones, which are rather 

 stout, and equal in length about one-fourth that of the body ; second pair of legs 

 with short, but stout hands, much larger than those of the first pair; posterior legs 

 long, with each article projecting a little at the insertion of the succeeding one. Caudal 

 stylets short, but very thick, spinous; those of the first pair much the longest; the 

 simple ones of the posterior pair very short but thick at base. Tail terminating in 

 an arched lamella. Color varying from bright green, through the various shades of 

 olive, to brown. Length, 0.3 inch. Taken abundantly on stones in the second 

 subregion of the littoral zone, especially where the Fucus nodosus and F. vesicidosus 

 flourish. It occurs on our whole coast from Massachusetts Bay to Grand Manan. 



Lysianassa spixifera, St., n. s. Body smooth and ,«hining, slightly compres.sed, 

 but rounded above, broadest anteriorly, tumid at the head, and much compressed 

 at the a1)domen, which constitutes nearly one-half the length of the body. Epimera 

 not very large. Head rounded, with a prominent down-curving rostrum, and rather 



