[35] 



DECAPODA FROM ABLATEOSS DREDGINGS. 



379 



The genus Notostomus is very closely allied to Meningodora aud it is 

 quite possible that it will be necessary to unite them. 



Measurements in millimeters. 



Station 



2042 



2074 



Sex , 



Length from tip of rostrom to tip of telson 



Length of carapax including rostrum 



Length of rostrum 



Hight of carapax 



Breadth of carapax 



Length of eye-stalk and eye 



Greatest diameter of eye 



Length of antenna! scale 



Breadth of antennal scale , 



Length of second perseopod 



Length of first peraeopod 



Length of chela , 



Length of dactylus 



Length of second peraeopod 



Length of chela 



Length of dactylus , 



Length of third peraeopod , 



Length of propodus 



Length of 'dactylus 



Length of fifth peraeopod 



Length of propodus 



Length of dactylus 



Length of sixth somite of pleon 



Hight of sixth somite of pleon 



Length of telson , 



135 

 61 

 13 

 35 



21.0 

 7.8 



42 



38 

 9.5 

 3.5 



46 

 9.4 

 3.2 



75 



34.5 

 3.5 



65 



25 

 0.7 



11.3 

 9.3 



24.0 



? 

 150 

 65 

 16 

 36 

 25 



20.5 

 8.5 

 44 

 36 

 9.4 

 3.6 

 45 

 .3 

 .2 



3. 



70 

 3L5 



3.6 

 63 

 24 



0.6 

 13.0 



9.0 

 24.5 



Station 2042, July 30, north lat. 39° 33', west long. 68° 26' 45", 1,555 

 fathoms, globigerina ooze, temperature 38^° — 1 male (7051). Station 

 2074, September 3, north lat. 41° 43', west long. 65° 21' 50", 1309 fath- 

 oms, fine mud, temperature 40<^ — 1 female (7052). 



Meningodora mollis Smith. 



Bull Mu8. Conip. Zool. Cambridge, x, p. 74, pi. 11, figs. 8-9, pi. 12, figs. 5-9, 



1882. 



One male (7051) was taken August 1 at Station 2051, K lat. 39° 41', 

 W. long. 69° 20' 20", 1,106 fathoms, blue mud and globigerina ooze, 

 temperature 39°. 



On account of the extreme softness of the entire animal, this speci- 

 men, like the single female from which the species was first described, 

 is in rather bad condition, but it has the peraeopods complete, and ena- 

 bles me to supplement the original description to a considerable extent. 



The dorsal carina, over and back of the base of the rostrum, is armed 

 with about seven minute spiniform teeth. The proximal part of the 

 upper flagoUum of the antennula is much stouter than the lower, strongly 

 compressed, and its outer inferior surface clothed with short hairs. 

 The antennal scale is considerably more than twice as long as broad, 

 very thin, foliaceous, slightly narrowed distally, and obliquely rounded 

 at the tip. 



The first perseopods are scarcely stouter than the second gnathopods 

 and fall considerably short of their tips : the merus is compressed and 

 as long as the proximal segment of the endopod of the second gnatho- 



