GAJIMAKIDJE. 183 



convex, covered anteriorly with a short fur, and along the supe- 

 rior margin with several rows of short hairs ; the inner surface is 

 concave, forming a hollow, into which the dactylos impinges) ; 

 dactylos shorter than palm, serrated along the inner margin, and 

 imj)inging against the inner surface of the propodos, and not along 

 the margin of the palm. Three posterior pairs of pereiopoda gra- 

 dually increasing in length. Penultimate pair of pleopoda sliorter 

 than the preceding ; idtimate extremely long, lanceolate, fringed 

 upon each margin Avith short spines, each subapicaUy tipped with 

 a cihum. Telson double, tipped with two or three spines. 

 Length -i-jjths of an inch. 



Hah. Dexon (Montagu); 'Plymouth (Leach); Polpcrro (l/r. Zom^7j- 

 7-in) ; Cxdtrea, Co. Down, Ireland (Professor Kinahan), 



2. MeUta obtusata. (Plate XXXIII. fig. 3.) P.M. 



Cancer (Gaumiarus) obtusatus, Montagu, Linn. Tram. xi. p. 5. t. 2. 



tig. 7. 

 Gaunnanis obtusatus, Liljeborg, Ofvers. afKomjl. Vetensk. Akad. For- 

 haiidl. 1854, p. 452. 



Bruzi'Uus, Skand. A7nph. Gamm. p. 55. 

 Amphithoe obtusata, Edwards, Ann. des Set. Nat. xx. ; Llist. des Crust. 

 iii. p. 83. 



IMiite, Jlist. Brit. Crmt. p. 201. 

 Gosse, Marine Zool. i. p. 141. 

 Gammai-us maculatus, Liljcbory, Ofvers. af Kongl. Vetensk. Akad, 

 FurhamU. 1852, p. 10 ; Kongl. Vetensk. Akad. Forhandl. 1853, p. 138 

 (not Johnston). 



Second, third, fom-th and fifth segments of the pleon having small 

 teeth upon the postero-dorsal margin. Eyes small, round. Su- 

 perior antenna) half as long as the animal ; firat and second joints 

 of the pedimcle each as long again as the third; flagellimi a 

 little longer than the peduncle. Inferior antenna) having the 

 peduncle quite as long as the peduncle of the superior ; flageUum 

 half as long as the flageUum of the superior. First pair of gna- 

 thopoda having the carpus as long as the propodos, the inferior 

 margin fringed with fine short hairs and, anteriorly, with two 

 short obtuse spines ; propodos ovate, palm oblique, slightly con- 

 vex, and armed with short equidistant spines ; dactylos arcuate. 

 Second pair of gnathopoda having the car[)us short, inferior angle 

 produced, sharp ; the propodos large, quadrate, broadest at the 

 palm ; palm at right angles with the propodos, having a tubercle 

 near the base of the dactylos, and a sharp short tooth at the 

 inferior angle, and another near the middle upon the internal 

 side, between which and the ]»alm the dactylos impinges as in a 

 groove ; dactylos scimitar-sliaped, being broadest near the apex. 



