l.AMMAUin.l!. 1 ]."> 



stj'lifitrin. Aiitopomiltinifvte piiir of jjloopotla sliort ; rami voiv 

 unequal: ])enultiniate sliort; rami 0(]unl : ultimalc Ion,-;; rami 

 hroad, tapering, much longer than peduncle, one branch I'niiiishcd 

 witli plumose cilia ; the outer clean, having an articulation near 

 the apex. Telson having each division tipped with a solitary 

 central spine with a fine hair upon each side. 

 Length -rVths of an inch. 

 Ilnh. Macduff (Jfr. Gregor). 



The uauio is given in compliment to the author of the ^Fonograph 

 of the British Eutomostraca. 



2. Urothoe marinus. (Plate XIX. fig. 2.) 



Sulcator marinus, Spencc Bate, Si/)iopsis,l^-c., Ann. Nat. Hist. Feb. 18<>7. 

 White, Hist. Brit. Crust, p." 175. 



Cephalon not produced into a rostnim. Superior antcnnsc ha\ing 

 the peduncle as long a-s the inferior antenna; ; superior margin 

 having fa.scieuli of cilia ; flagellum scarcely longer than last joint 

 of pedimcle ; secondary appendage half as long as the primary. 

 Inferior antennae ha%ing the first joint of the peduncle a« long as 

 the other two, furnished with three longitudinal rows of obtuse- 

 pointed spines gradually increasing in length towards the distal 

 extremity of the joint, each subajncally tipped Avith a small 

 hair ; fourth and fifth joints subequal, furnished superiorly and 

 distally with a few spines and long haii-s ; fiagellum consisting of a 

 single joint, tijipcd %vith two long hairs. First paii' of gnathopoda 

 much smaller than the second ; carpus longer than the projjodos, 

 dilated inferiorly, straight, sparsely ciliated, minutely produi-ed 

 anteriorly ; propodos narrow ovate, slightly increasing anteriorly, 

 ciliated ; pabn not defined ; dactylos long, curved. Second pair of 

 gnathopoda larger than the fii-st, which it resembles, except that 

 the inferior dilated margin of the carpus is convex and fringed with 

 two longitudinal rows of cilia, one directed anteriorly, the other 

 ])osteriorly ; distal margin excavated: propodos increasing ante- 

 riorly in bi-eadth ; palm emarginate, scarcely defined ; inferiur 

 angle rounded, ciliated. Two anterior pairs of pereiopoda uniform ; 

 ]>asos fuiTiLshed at the posterior distal extremity \\ith a fasciculus 

 of plumose cilia ; carpus furnished posteriorly with four obtuse- 

 pointed spines, gradually increasing in length ; propodos dilated 

 posterioily, and I'ui'nished with four or five shai'p straight 

 spines of unequal length ; dactylos nearly straight, M'ith coarse 

 serrat\u-e.s (or small tubercles) upnn the j)os(orior margin. The 

 dactylos, M-ith the large spines upon the jiropodos and the spines 



i2 



