OAMMARID.E. I'W 



jHMlunt'lo ; soioiiflaiT ap])onflii{::o nearly halt' as loii^ as the ]h>- 

 (hiiicle, consisting of two luiij'; aiticuli ; third joint of the ptdunde 

 not so long as the fii-st, and the first not so long as the second. 

 Peduncle of the inferior antennae longer than the peduncle of the 

 sui)erior, last two joints siibequal, and more than as long again as 

 the preceding ; tlagellum four- or five-articulutcd, not longer than 

 H])out half the length of the last joint of the peduncle. Coxa of 

 the tii\st pair of giiathopoda produced anteriorly to a point ; basos 

 very long, nearly -an long as the second pair of gnathopoda ; 

 meros inferiorlj and anteriorly produced, as long as the carjjus ; 

 carpus longer than the propodos ; propodos long-ovate ; dactylos 

 nearly as long as the propodos, internal margin serrated. Second 

 pair of gnathopoda not longer than the fii'st two pairs of pereio- 

 poda ; caipus as broad as the propodos ; propodos having the mar- 

 gins parallel, palm oblique, imperfectly defined. Third pair of 

 pereiopoda very short, shorter than the preceding pair ; basos 

 oval. Fourth pair considerably longer than the tliird, furnished 

 with long cilia ; basos oval, with the postero-inferior angle pro- 

 duced. Plcopoda subequal. Telson with one or two plumose cilia. 

 Colour claret-red, with black spots, chiefly on the coxae, legs, and 

 dorsal and marginal surfaces of each segment of the body. 

 Length -^ths of an inch. 



Hah. Plymouth Sound, trawled off the Eddystone, andOxwich Bay. 

 Glamorgan^C. >S'. 5.). Polperro {Mr. Loufjlinn). Loch Fyne and 

 St. Ives {Mr. G. Barlee). 



I have taken, from trawl-refuse, a specimen that diifcrs from 

 the one described in having the fii-st pair of gnathopoda shorter and 

 much more robust ; also a second specimen, the colour of which is 

 yellow, spotted with black, and the internal margin of the dactylos on 

 Ihe first pair of gnathopoda entire. These being the only differences 

 between them and the form 1 have described, I doubt whether th<^ 

 distinctions are more than those of sex, or variety de]«ii(li'iit \\\>tm 

 local circiimstances. 



2. Aora typica. (Plate XXIX. fig. 8.) 



Aora tj-uica, Kroyer, Tkhkr. ser. 2. i. p. 328. pi. 3. f. 3. 

 Lalaria longitai-sis, Nicoh-t, Gmjs Hist, de Chile, iii. pi. 2. f. 8. 



Eyes small, round. Superior antenna) two-thirds the length of the 

 animal ; inferior one-fo>irth shorter than the superior. Firet 

 pair of gnathopoda having a large tooth directed forwards near 

 the superior extremity of the anterior margin of the basos ; meros 

 inferiorly produced, as long as the carpus ; carpus rather longer 

 than the propodos ; propodos slightly arcuate, palm none, infei-ior 



.M 



