OAMMAUID.E. 77 



l):iiin at a right angle ; dactylos short, obtuso. Second pair of 

 giiathopoda haN-ing the propodos short, plentifully tufted with 

 hairs that almost hide the dactylos. The inferior surface of 

 the carpns covered with an armour of tridentate scales. The two 

 posterior pairs of pcreiopoda hanng the basos ovate, and extend- 

 ing to and covering half the meros. Posterior pair of pleopoda 

 short, the rami not longer than the base ; a dorsal sinus upon the 

 fourth segment. 

 Length ^ths of an inch. 



I have received this species from Btrangford Loch, where it was 

 dredged by Mr. George Barlee, and from Falmouth, by Mr. W. Webster. 

 I have also di-edged it in PljTnouth (Sound. 



10. Anonyx lagena. (Plate XIL fig. 7.) B.M. 



Lysianassa vel Anonyx lagena, Kroi/er, Chron. Amjip, p. 9. tab. 1. f. 1, 

 Lysianassa lagena, Edwards, Hist, des Crust, t. iii. p. 21. 

 Bell, Bvldiers Last of the Arctic Voyages, Ajypendix. 

 Anonyx vorax, Stimpson, MS. * 



Eyes large at bottom, like an inverted comma. Inferior antenna? as 

 long again as the superior. Mandibles having a tubercle within 

 and below the appendage ; a posteriorly directed tooth upon the 

 anterior extremity of the incisive margin, and a sharp cm'ved 

 tooth a little above the posterior extremity. First pair of gna- 

 thopoda having the cari)us rather broader than the propodos ; the 

 propodos gi-adually narrowed from the carpus to the palm, where 

 it again slightly increases in width ; palm not oblique, pectinate ; 

 the inferior angle armed with one or more short spines. The 

 second pair of gnathopoda ha\ing the propodos more than half as 

 long as the carpus. The posterior margin of the third segment 

 of the pleon deeply concave. Posterior pair of pleopoda longer 

 than the preceding. Telson deeply cleft. 

 Length nearly an inch and a half. 



I have been enabled to compare a specimen of Stimpson's species, 

 A. vorax, with a specimen of A. larjena presented to the British 

 Museum by M. HolbiiU, and can perceive no specific distinction be- 

 tween the two. 



Krijycr records the species as from Greenland ; Holbtill's specimen, 

 in the British Museum, was also procm-ed there. Sir James lloss 

 brought some home from the Arctic Seas ; and Mr. Stimpson's species, 

 A. vorax, was taken in Behring's Straits. Specimens of this species 

 are preserved in the MiLscum of tlie Royal College of Surgeons. 



* The names referred to Stimpson's MS. are those attached to the specimens 

 that ho 90 kindly sent to me, and whicli I have not been able to find in his pul)- 

 lished works, for most of wliicli I am also indebted to liim. 



