Rev. A. M. Norman's Notes on British Ampliipoda. 117 



clivaricating simple setae, wliicli have hamate tips ; outer 

 margin of pahn (tig. 7) furnisiied witli regularly arranged 

 long setffi, inner margin (fig. 8) with stiff bent seta3, each of 

 which is furnished at the bend with two or three lateral 

 prongs ; alternating with tliese stiff seta3 are a series of shorf:, 

 blunt-topped spinules, and another series is seen behind these 

 of a similar character. Two anterior pair oi percmpods with 

 the dactylus scarcely more than one fourth length of pre- 

 ceding joint. Last perasopods (fig. 9) with nieros and carpus 

 subequal, propodos slightly longer, of good breadth (but not 

 flattened out, as in L. fissicornis)^ with four pairs of spines on 

 the anterior and two or three sette on posterior margin ; finger 

 short, not exceeding one fourth of length of propodos, gradu- 

 ally attenuated, tv/o spines on the propodos at its base. 

 Telson longer than peduncle of last uropods, and these have 

 the branches very broad and foliaceous. As in L. 'pallida the 

 first, second, fourth, and fifth segments of pleon have a central 

 dorsal tooth. The colouring of the two specimens is alike 

 and remarkable, the ground-colour pale with markings as 

 follows of deep purple (at least that is their colour now iu 

 specimens which were mounted fresh from the sea twenty- 

 three years ago) : — Antenn[B and antennules each with a spot 

 on the last joint of peduncle ; the purple colour commences 

 on the head, across which it passes obliquely from behind 

 forwards to the mandibles ; thence the colour is suffused over 

 all parts except the distal joints of the anterior perteopods 

 until the middle of the last segment of perason ; here it passes 

 obliquely forwards, and is continued through the thighs of 

 the fourth perteopods, leaving the thighs of the last perajopods 

 white, except that distally on them is a small spot of the same 

 colour, which also appears in a spot near the base of every 

 joint (except ischium and propodos) of three posterior perseo- 

 pods, as well as in blotches on the back of second and two 

 following segments of pleon, and stainings at the base of the 

 pleopods attached to these segments, on the distal portion of 

 first and second and on the basal portion of the last uropods. 

 Length 6 millim., exclusive of antennte. 



The absence of a produced calx to the wrist of the i\iO 

 gnathopods will, apart from all other characters, at once serve 

 to distinguish this species from L. pallida^ L. Kinahaniy and 

 L. Jissicornis (M. Sars). In this respect it resembles L. cequi- 

 cornis, G. O. Sars ; but from that species it may be known 

 by the different antennules, the much smaller wrists of the 

 gnathopods, longer and less flattened propodos and shorter 

 and stronger nail of last pera?opods, and by the four dorsal 

 teeth on the pleon instead of one only. 



