AMPHIPODA OF SOUTHKRN NEW ENGLAND. 



4S1) 



deeper than long, and deeper than their respective segments, the fourth deeply excavated at upper 

 posterior angle; last three coxal plates acute behind, first two (fifth ;nu\ sixth) ridged along lower 



side; mandibles with si_ ml joint of palp twice length of tirst and a] must as long as third; first maxillse 



with outer plate but little longer than its breadth at base and armed distally with nine dentigerous 

 spines; second joint of palp over twice length of first, and armed around tip and on distal third of 

 inner margin with eight or nine very short spines; maxillipeds with inner plates broad and very short, 

 not quite reaching: distal end of outer part of ischium; outer plates small, oblong, not quite reaching 

 tip of first joint of palp; fourth joint of palp claw-like, smooth; gnathopods of subequal size and similar 

 form; merus with postero-inferior angle acute; carpus with a very narrow, setose posterior lobe; pro- 

 podus large, subovate, palm convex: dactyl, when closed, fitting into a small pocket at upper end of 

 palm; outer ramus of posterior uropods markedly shorter than inner; telson subquadrate, with broadly 

 rounded posterior angles. 



Stimpson describes the color of this species as "very variable, generally dark reddish or brown, 

 variegated, and mottled with white. Some specimens were of a uniform deep purple, others pure 

 white. Eyes yellowish or vermilion colored, with a black dot in the middle." 



Length, 15 mm. 



Stimpson states that this species, when disturbed, "rolls itself up and remains quiescent, as if 

 feigning death. When in motion this animal preserves an erect posture, like the isopods, 



with its tail bent up underneath. It seldom swims, but makes powerful leaps by means of its well- 

 developed caudal stylets." 



Grand Manan (Stimpson), taken "in 10 fathoms on a sandy bottom inside of Duck Island ledge" ; 

 Henley Harbor. Labrador, "at a depth of 4 fathoms among weeds" ( Packard ); Gulf coast of Lai rador 

 (Smith); Eastport, Me. 



My description ami figures of this species are taken from a single imperfect specimen from East- 

 port, Me Elected by Professor Packard and belonging to the Boston Society of Natural History. 



Paranrphithoe pulchella (Kroyer). 

 ParamphUhoc euacantha Sars, Norske Nordbavs-Exped., p. 168, t. xrv. tig. 3, 1885. 



Thorax and first three abdominal segments with a prominent dorsal crest which on posterior 

 segments of thorax and first three segments of abdomen is produced posteriorly into large, oblique, 

 compressed spines. In some specimens the dorsal carina appears as 

 far forward as the first thoracic segment, but the first three segments 

 and often the fourth have no posterior spinous projection; fourth 

 abdominal segment with a triangular compressed elevation above, but 

 no true spine; posterolateral angles of second and third abdominal 

 segments land to a less extent the tirst also) produced into an acute 

 tooth; head with a broad obtuse rostrum and projecting, subacute 

 lateral angles; eyes broadly oval or nearly round; first antenna? nearly 

 as long as boily, first basal joint as long as next two; second antenna' 

 seldom much over half length of first; first coxal plates tapering to a 

 subacute point below, the three following ones with lower margin 

 rounded; gnathopods similar; hand oblong, widening somewhat dis- 

 tally; palm oblique, smooth except for a minute tooth not far from middle; the three posterior 

 peraeopods nearly equal; terminal uropods slender, outer ramus a little over half length of inner one; 

 telson oblong, distally rounded, with a minute projection on either side of tip). 



Length 17 mm. 



Widely distributed in the Arctic Ocean; Greenland (Kroyer); Norway (Sars); Labrador (Grand 

 Manan). 



The specimen figured approaches the form described by Sars as /'. euacantha, but which that 

 author subsequently concluded, in agreement with Hansen, was "only an excessively developed 

 variety " of pulchi Hi . 



ramphithoi pulchella. AtterSars. 



