NO. 1302. AMERICAN PAR ASITIC ARGULID.E-WILSON. 711 



reference to the parasite, the latter simply repeating- the mistake of 



*^&^ describes and portrays what he calls a female of the species 

 which was the only specimen obtained. His figure shows at once that 

 he has mistaken the sex and has really a male. 



The length of the abdomen, the size of the testes, and the accessory 

 copulatory organs on the posterior legs are unmistakable proofs of 

 this Thorell also states that both the male and female are known, 

 which would manifestly be rather difficult from a single specimen. So 

 far as known the present description and figure of the female are the 



first published. 



That this is really the female of the species was yery pleasantly con- 

 firmed after the description had been written by finding a male and 

 female in the material sent for examination from the Ohio State Uni- 

 yersity, which had been taken together from the same Mmnnow 

 The habitat of this species must now be extended to include the whole 

 Atlantic coast, for the National Museum collection includes No blo3, 

 taken from among many fish at Waquoit, Connecticut; No/>lbO, from 

 Long Island Sound, and an unnumbered specimen from Woods Hole. 



{fimdulus= generic name of its host.) 



ARGULUS PUGETTENSIS Dana. 

 Plate XV. 

 Arguhcs pugettensis Dana, U. S. Exploring Expedition during the years 1838- 

 1842; under the command of Charles Wilkes, U. S. Navy, XIII, Crustacea.- 

 Thorell, Om tvenna Europeiska Argulider, etc., (Elvers, af Kongl. 

 Yetensk.-Akad. Forhandlingar, 21st series, Stockholm, 1864. 



Carapace elliptical, longer than wide, entirely coyering the legs; 

 posterior sinus rather narrow, two-fifths the length of the carapace 

 ibdomen large, l)road elliptical, nearly half the length of the rest of 

 the body; anal sinus lu-oad triangular, cut fully to the center, lobes 

 subacute; papilhv basal. , 



Sucking disks a little more than a quarter the width ot the caia- 

 paceand close together; posterior maxillipeds large and well armed; 

 basal plate broadly wedge-shaped, teeth short, blunt, and far apart. 

 Antenna^ medium ^ize, but yery poorly armed. Swimming legs short, 

 iust reaching the edge of the carapace, furnished with flagella; lobes 

 on the posterior pair small and scarcely projecting. Oyiduct papillae 



small. 



Color, yellowish white in alcoholic specimens. 



Length, 17.3 mm.; length of carapace, 12.8 mm.; width ot cara- 

 pace, 10 mm.; breadth of abdomen, 4 mm.; length, 5.3 mm. Male 



unknown. , ^^ ^ , 



miMtat.-Yvom the shores of Puget Sound. Host unknown. 

 {FugeUe7isis=ivom the name of its habitat.) 



