PYCNOGONIDA OF NEW ENGLAND AND ADJACENT WATERS. 477 



is considerably smaller, the third and fourth joints are much shorter and' 

 stouter,, and the latter is not expanded at the extremity. 



Legs enormously long, over four times the length of the body, very 

 slender near the base, much stouter distally ; the first and third joints 

 are short, the second much longer, about five times the first ;. the three 

 following are much longer and very stout ; the fourth is usually dis- 

 tended by the generative organs; tarsus very short and nearly trian- 

 gular; propodus nearly straight and very slender; it is very narrow at 

 the base, expanding to two and a half times this width, near the ex- 

 tremity ; on the inferior side, near the base, are four or five stout spines, 

 followed by a series of much smaller and more slender ones ; dactylus 

 slender, more than half the length of the propodus; auxiliary claws 

 slender, two-thirds as long as the dactylus. The legs bear a few scat- 

 tered stout hairs, most numerous distally. Length 1.5 millimeters ; ex- 

 tent 13 milUmeters. Color in alcohol, white. 



This interesting species is closely similar to the European P. hre- 

 virostris Johnston, the type of the genus, and it is possible that a larger 

 series of specimens may prove the identity of the two forms. The Pea- 

 body Museum has received, from Professor Semper, three specimens of 

 the Euroj)ean species, collected at Heligolaml, in the North Sea ; these 

 specimens agree in having a shorter and broader neck than that of our 

 species, and the rostrum is much longer. I think that the species must 

 be kept separate unless a series of specimens show intermediate forms. 



Kew Haven to Vineyard Sound. Several specimens were taken, in 

 1874, by Prof. S. I. Smith, from tubularian hydroids growing on the bot- 

 tom of an old ship at Noauk, Conn. Professor Yerrill notes that the 

 eyes are, in life, of a bright red color. 



Specimens examined. 



PSEUDOPALLENE Wilson. 



Body robust; neck broad and thick; rostrum more or less acute. 

 Antennae three-jointed, chelate; palpi wanting; accessory legs eleven- 

 jointed, present in both sexes; legs stout and comparatively short, 

 dactylus without auxiliary claws. 



This genus has hitherto been confounded with Pallene, and some con- 

 fusion has thus been caused in the diagnosis of that genus. 



In Pallene, as described by Johnston (Mag. Zool. and Bot., vol. i, p. 



