REPORT ON THE AMPHIPODA. 277 



" Porcupine " Expedition, was given in Sir 'Wyville Thomson's Depths of the Sea, by mistake 

 (according to Norman in Mayer, Caprelliden, p. 35, note 1) for Cajrrella spitwsissima, 

 Stimpson. Normau, however, in 1886, gives " Caprella spinosissima, Norman = C. horrida, 

 Sars." A specimen supposed to be the female of the species in question was sent by 

 Norman to Mayer, and proved to be in fact an yEgina, which in Mayer's opinion may 

 represent a new species, to which he would in that case assign the name ^gina spinosisxima 

 Norman, but that is surely pre-occupied by Stimpson's species. That the specimen figured 

 in the Depths of the Sea is a CapreUa, I have satisfied myself by dissection of the 

 mouth organs, and in fact it no doubt falls to the name Caprella Iwrrida, Sars (see Note 

 on G. O. Sars, 1885). Unciola irrorata. Say, is mentioned. Podocerus nitidus, n. s., is 

 described. The new genus Leptotho'e, which Spence Bate identifies with Moira of Leach, 

 is thus defined : — 



" Body linear, segments well separated, epimera very small ; superior antennte longest, with a 

 long accessory fiageUum ; inferior ones subpediform ; legs of the first two pairs with 

 subcheliform hands, those of the second pair being largest, with uniarticulate fingers. 

 Caudal stylets of the last pair very long, with equal lanceolate rami on short peduncles. 

 This genus differs from Podocerus, Leach, in possessing accessory flageUa to the superior 

 antenna3 ; and from CratopMum, Dana, in its long nonuncinate terminal stylets, and in 

 having the superior antennae longest." The type species is " Leptotho'e Dans." now called 

 Mxra danse. Stimpson's Cerapus ruhricornis which "inhabits flexible tubes, of sizes 

 corresponding to that of the individuals, composed of fine mud and some animal cement by 

 which it is agglutinated," is identified by S. I. Smith with Eridhonius difformis, Milne- 

 Edwards. His Cerapus fucicola is identified by Sp. Bate with Podocirus cijliadricus, Say, 

 while Boeck doubtfully places both these designations under Podocerus awjuipes, Kr0yer, 

 Podocerus cylindricus, however, being the eldest of the names. S. I Smith gives Podocei-us 

 fucicola as an independent species, naming Podocerus cylitidricus, Say, not Bate, Con-op)hmin 

 cylindrieum. Stimpson's Cerapus Jasciatus is allowed by Sp. Bate to remain in that genus 

 with a I It cannot stay in that genus as defined by S. I. Smith, since the figure of the 

 pleon shows that there are at any rate five rami on each side to the uropods, whereas in 

 Cerapus there are only four. Stimpson doubtfully identifies Orchestia gryllus, Gould, with 

 Talitrus grijllus, Bosc. His Allorchestes littoralis is recognised by S. L Smith as Hyale 

 littoralis. The tail is said to terminate in an arched lamella, which may be a way of 

 expressing that it is cleft. 



Lysianassa spinifera, n. sp., according to Spence Bate, Brit. Mus. Catal., p. 120 (omitted from 

 index), " seems to be closely related to " his genus Phmdra. It is thus described :— " Body 

 smooth and shining, slightly compressed, but rounded above, broadest anteriorly, tumid at the 

 head, and much compressed at the abdomen, which constitutes nearly one-half the length 

 of the body. Epimera not very large. Head rounded, with a prominent down-cm-ving 

 rostrum, and rather large red eyes. Superior antennae two-thirds as long as the inferior 

 ones, thick at their bases, but tapering suddenly after the juncture of the long accessory 

 flageUum, which is nearly one-half the length of the principal one. Inferior antennae 

 with very thick basal articles, and equalling in length two-thirds that of the body, their 

 flagella constituting more than one-half their lengtL Legs hairy, all terminating in short 

 hooked fingers ; those of the first two pairs slender, longer than the rest, with the ante- 

 penultimate article in each a little expanded, but scarce sufficiently to form a hand. 

 Posterior legs much shorter than usual, and provided along their edges with short spine- 

 like hairs. First three segments of the abdomen serrated above on their posterior edges ; 

 last three compressed above into sharp spine-like projections, of which the middle one is 

 the longest. Caudal stylets of the first pair \-ery long and slender, projecting beyond the 

 sharp extremities of the second pair, which are short, while those of the third pair are 



