REPORT ON THE AMPHIPODA. 213 



setosus. Pes primi paris robustissimus, manu subcheliforiiii ; pes secundi paris gracilior, 

 manu carcns subcheliformi ; pedes tertii qvartique paris pergraciles ; pedes qninti, sext-i 

 septimiqiie paris graciJes, femoribus parum dilatatis. Pedes abdominales primi, secundi et 

 tertii paris natatorii, breves sed robustissimi ; pedes abdominales quarti quintique paris 

 xaltatorii, validi ; pedes sexti paris fere rudimentares, natatorii. Epimera minima, fere 

 evanescentia." 



In tlie description of the species Glauconome leucopis, Kr0yer says, " Sjette Par Bugfydder 

 meget smaa og plumpe ; Roddelen omtrent to Gange saa lang som den ydre Endeplade, 

 meget bred, i Enden skraat afskaaren i Eetningen indad og bagtil ; den ydre Endeplade 

 regelmsessigt oval, vsebnet i Enden med fem eller sex temmelig lange B0rster ; den indre 

 Endeplade er endeel mindre end den ydre, stunipt konisk, ligeledes forsynet med et Par 

 B0rster." Boeck does not notice this detailed descrif)tion, but refers to the figure in the 

 Voy, en Scand., as erroneously giving these uropods with two branches, instead of a single 

 branch and a produced peduncle. S. I. Smith, 1880, on the ground that Boeck had access 

 to Kr0yer's types, accepts his correction of Kroyer, and identifies Glauconome leucojn.s with 

 Unriola irrorafa, Say. It should, however, be observed that Kr0yer's description is 

 extremely jjrecise, and that the figure, Voy. en Scand., pi. 19, fig. lu, which agrees with it, 

 was not drawn by Kroyer himself, if we may trust the signature " C. Thornam del." at the 

 foot of the plate. In any case, as S. I. Smith observes, the name Glauconome is preoccupied, 

 but whether it should be identified with Unciula may still perhaps remain a little doubtful. 



Eusirus cuspidatus, n. s., figured pi. vii. fig. 1, a-d., is next described as type of a new genus 

 near to Gammarun and Ampldlhoc, and with some appi'oach to Leucofhoi'. The genus 

 Eusirus is described as follows :■ — 



" Antenna superiores flagello appendiculari rudimentari, tertioque pedunculi articulo minutis.simo, 

 fere rudimentari. Antennx inferiores pedunculo flageUi longitudinem superante. Maxillx 

 jn'iori.'i paris palpo elongato, acuminato, setoso, cujus articulus primus dimidiam secundi 

 articuli longitudinem superat. Mandibula parva, apice bifurco, dentato, flabello setaruni 

 marginis interioris, tuberculo molari transverse-elliptico dentibus minutissimis confertis 

 formato ; palpus triartioulatus duplam fere requat mandibulre longitudinem. Pedes- 

 maxiUares laminis maxillaribus minutis, deutatis ; palpo maximo, robustissimo. Pedei>- 

 fhoracici primi et secundi -pans eadem ferme invicem forma et magnitudine, manu armati 

 subcheliformi maxima, laminari, ungve maximo sed gracillimo ; articulo antepenultimo 

 praelongo, gracili, postice calcarato, antice ad medium marginem manus anteriorem protento. 

 Pedes thoracici tertii quartique paris pergraciles sed forma vulgari. Sex branchiarum paria 

 (annuli thoracici 2di-7mi). Quatuor laminarum in femiuis paria thoracicarum (annuli 

 2di-5ti). Reliqua ferme ut in genere Gammaro vel Amphithoe." 



This genus is placed by Boeck in his subfamily Leucothoin». 



Dulichia qmiosissima, n. s.. Tab. vi., fig. 1, a-k, is described as type of a new genus inter- 

 mediate between the GamriKjrina and Caprellina. The genus is thus defined : — 



" Corpus valde elongatum, gracile. Antennx longissimse (imprimis superiores), subpediformes ; 

 superiores flagello instructse appendiculari. OcuU prominentissimi, acuminati. Pedeit 

 iiia.nllares forma valde dilatata. Pedes thoracici primi jiaris compre.=si, manu (articulo 

 quarto) magna, ungveque biarticulato instructi (qvi ungvis articulo quinto sextoque junctis 

 efficitur). Pedes secundi paris manu instructi subcheliformi (qvie apud mares maxima est). 

 Pedes tertii (piartiqiie paris minimi, fere filiformes, invicem ejusdem [eadem] ferme longi- 

 tudine et forma. Pedes cpdnti, sexti sep)timi<pie jMris elongati, lineares (femore non dilatato), 

 prehensiles. Sextus thoracis annulus cum septimo coalitus, ut diflicilius distingvantur. 

 Epimera nulla vel prorsus rudimentaria. Abdomen quinque modo compositum annulis et 

 quinque prajditum pedum paribus, quorum tria anteriora natatoria, duo posteriora saltatoria 

 sunt." 



