[575] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 281 



ARGULUS MEGALOPS Smith, sp. nov. (p. 452.) 



Carapax subelliptical, longer than broad ; the antero-lateral margin 

 with a deep sinus; the posterior lobes of the carapax, each side of the 

 shallow and narrow sinus, broady rounded. Eyes very large, their 

 diameter a tenth as great as the breadth of the carapax. Body pro 

 jecting much beyond the posterior margin of the carapax. Tail some 

 what ovate, about two-thirds as broad as long, the sinus only a small 

 notch, extending not more than a tenth of the length. Natatory legs very 

 long, all projecting beyond the carapax. Squamiform appendages upon 

 the bases of the prehensile legs, with a pappilose area upon the expanded 

 portion, and the posterior margin armed with three rather slender 

 teeth, separated by broad spaces; the terminal segment of the leg 

 armed with two small hooks. 



Color of alcoholic specimens, yellowish white. 



Length, 2.2 mm ; length of carapax, 1.3; breadth of carapax, 1.0 ; length 

 of tail, 0.7; breadth of tail, 0.47. 



Vineyard Sound, taken at the surface, July 8. 



ARGULUS ALOS^E Gould, (p. 459.) 



Invertebrata of Massachusetts, p. 340, 1841. 



Parasitic upon the alewife in Massachusetts Bay, according to Gould. 

 OALIGUS CURTUS Miiller. (p. 459.) 



Eutomostraca,p. 130, PI. 21, figs. 1,2, 1785 ; Kroyer, Nat. Tidsskrift, vol. i, p. 619, 

 PI. 6, fig. 2, 1837. CaUym M dlleri Leach, Encycl. Brit., Suppl., vol. i, p. 405, 

 PL 20, figs. 1-8, 1816, (teste Baird et al. ;) Baird, British Entoniostraca, p. 271, 

 PI. 32, tigs. 4, 5. Caligits Amerlcanus Pickering and Dana, Arner. Jour. Sci., 

 vol. xxxiv, p. 225, PI. 3-5, 1838 ; Dana, U. S. Expl. Expd., Crust., PL 93. 

 Abundant upon tbe cod-fish of our coast and of Europe. It is prob 

 ably the Caliym pi acinus of Gould and other American writers. 



CALIGUS RAPAX Edwards, (p. 457.) 



Hist. nat. des Crust., tome iii, p. 453, PL 38, fig. 9-12, 1840 ; Baird, op. cit.,p. 270, 

 pi. 32, figs. 2, 3; Steenstrup and Liitken, Bidrag til Kundskab om det aabue 

 Havs Snyltekrebse og Lermeer, p. 359, PL 2, fig. 4, 1861. 



Vineyard Sound, on the stingray, (Trygon centroura,) and small speci 

 mens, both male and female, taken at the surface at Wood s Hole, Sep 

 tember 3, in the evening. These specimens from the surface, according 

 to Professor Verrill s notes, were light flesh color, thickly speckled with 

 minute brown spots, the eyes bright red. 



LEPEOPHTHEIRUS, species, (p. 459.) 



A species with a long tail, and somewhat like the L. gracilis, (Van 

 Benaden sp.,) was found upon the stingray (Trygon centroura) taken in 

 Vineyard Sound. 



LEPEOPHTHEIRUS, species, (p. 459.) 



A species with a very short tail, and approaching Heller s genus Anu- 

 retes. South shore of Long Island, upon a flounder, (Chcmopsetta ocel- 

 laris.) 



