59 



Par enormt forlænget, over dobbelt saa lang som selve 

 Stammen, med Endedelen sammensat al' et stort Antal at' 

 korte Led. Epignathen er smalt lancetformig og omtrent 

 af Basaldelens Længde. 



2det Par Kjævefodder (Fig. 13) er kraftigt udviklede, 

 mere end dobbelt saa lange som Iste Par og mangler som 

 sædvanligt Epignatb. hvorimod Exognathen er af samme 

 Udseende som paa foregaaende Par. Af Stammens Led er 

 det 4de længst. 5te Led. der sædvanlig med foregaaende 

 danner en stærk knæformig Boining, er noget fortykket i 

 Enden og her teet børstebesat. Sidste Led er særdeles lidet 

 og meget bevægeligt forbundet med det foregaaende. saa 

 at det kan slaaes ind mod en tilsvarende Udrandning i den 

 indre Kant af dette (se Fig. 14). Let bar foruden en bel 

 Del finere Bolster paa hver Side en Rad af korte cilierede 

 Torner. Selve Spidsen indtages af en noget større ucilierel 

 Torn. der forestiller den rudimentære Endeklo. 



Fødderne (Fig. 15) viser den for Slægten characteri- 

 stiske spinkle Form og er navnlig i den indre Kant for- 

 synede med talrige lange og tynde Børster. Det stærkt 

 forlængede 4de Leil bar paa Iste Par ved Enden i det 

 ydre Hjørne et Knippe af lange fortilrettede Fjærbørster, 

 der mangler paa de øvrige Par. Endedelen er (paa de 

 forreste Par) betydelig kortere end 4de Led og bestaar 

 ligesom hos B. megalops kun af 2 Led. foruden Endekloen. 

 Svømmegrenen (Exopoditen) svarer i sin Bygning fuldkom- 

 men til Exognathen paa Kjævefødderne og er som denne 

 ualmindelig stærkt forlænget. med Endedelen sammensat af 

 indtil 36 Led. 



Brystposen eller Marsupium. der paa et Par af de 

 erholdte Exemplarer var stærkt udviklet (se Fig. 2). er 

 som bos de øvrige Arter af denne Slægt sammensat af ikke 

 mindre end 7 Par tydelige Plader, der udgaar fra Basis af 

 samtlige Fedder samt sidste Kjævefodpar. hvorfor den ogsaa 

 indtager Størsteparten af Forkroppens Yentralside. De 

 forreste af disse Plader (se Fig. 13 og 15) er smalt tunge- 

 formige, de øvrige bliver bagtil succesivt større og mere 

 lancetdannede. 



Bagkroppens Buglemmer (Fig. 16) er af den sædvanlige 



rudimentære Beskaffenhed. kun dannende smaa enkle, i den 

 ene Kant med stærke Fjærbørster forsynede tilspidsede Plader. 

 Det midterste Halevedhæng (Fig. 17) er temmelig 

 stort, pladeformigt og af arlan? Form. med den ydre Del 

 noget afsmalnende. Dets Sidekanter er ganske svagt buede 

 og. naar andtages det basale Parti, teet besat med Torner, 

 der er af meget ulige Størrelse og saaledes grupperede, at 

 der inellem to længere altid tindes et vist Antal (6 — 8) 

 kortere. Enden er som sædvanligt i Midten dybt indskaaret. 

 Indsnittet. der omtrent indtager l / 3 af Vedhængets Længde, 

 er forti] ganske smalt, dog afrundet i Bunden, og bar Kan- 

 terne besatte med kamformigt ordnede Tænder. Endefligerne 

 (Fig. 18) er stumpt koniske og ved Spidsen forsynede med 

 3 omtrent ligestore Torner. 



Here. as in the succeeding pairs, the exognath is quite 

 unusually produced, being more tban twice as long as the 

 stem itself. and has the terminal section composed of a large 

 number of short articulations. The epignath is slender- 

 lanceolate, and about of the same length as the basal part. 



The 2nd pair of maxillipeds (fig. 13) are powerfully 

 developed, more tban twice as long as the Ist pair. and as 

 usual without any epignath. Of the joints of the stem. the 

 4th is the longest. The 5th joint, which, along witb the 

 preeeding. usually forms a strong, geniculate curve, is 

 somewhat inspissated at the extremity, and there denselj 

 beset witb bristles. The last joint is exceedingly small, and 

 very flexibly connected witb the preeeding. in sucb manner, 

 that it admits of being bent in toward a corresponding 

 emargination on the inner border of the Latter (see fig. 14i. 

 It bas. exclusive of a great niany slender bristles, on eitber 

 side a series of short eiliated spines. The point itself 

 bears a somewhat larger. naked spine, that represents tlie 

 rudimentary terminal claw. 



The legs (rig. 15) exhibit the slender form charac- 

 teristic of the genus, and are furnished, more particularly 

 along the inner margin, with numerous long and slender 

 bristles. The very elongate 4th joint has on the first pair, 

 at the extremity. in the outer corner, a fascicle of long, 

 anteriorly directed. plumose bristles. wanting in the otber 

 pairs. The terminal part (on the foremost pairs) is con- 

 siderably sborter tban the 4th joint, and consists, as in B. 

 megalops, of 2 articulations only. besides the terminal claw. 

 The natatory branch (the exopodite) corresponds in its 

 structure perfectly with the exognath on the maxillipeds, 

 and is. like that, greatly produced. the terminal part being 

 composed of as many as 36 articulations. 



The marsupium. or incubatory pouch which. in one or 

 two of the specimens collected, was greatly developed (see fig. 

 2), is, as in the otber species of tbis genus, composed of not 

 less than 7 pairs of distinctly defined plates, proceeding from 

 the base of the legs and of the last pair of maxillipeds; 

 and bence it occupies the greater part of the ventral face 

 of the anterior division of the body. The foremost of tbese 

 plates (see figs. 13. 15) are narrow-linguiform. the others 

 become successively larger posteriorly and more lanceolate 

 in shape. 



The abdominal limbs (fig. 16) have the usual rudimentary 

 character. forming merely small, simple, pointed plates, fur- 

 nished along one of the margins with strong. plumose bristles. 



The telson (fig. 17) comparatively large, oblongo-lamel- 

 lar in form. with the outer part somewhat tapering. Its 

 lateral margins are very slightly arched. and. saving the 

 basal part. densely beset with spines. very unequal in size, 

 and so disposed that a certain number (6—8) of shorter 

 always occur between two longer ones. The extremity 

 is, as usual. deeply cleft in the middle. The incision. 

 measuring about one-fiftb of the length of the appendage, 

 is quite narrow anteriorly. but rounded at the bottom, and 

 has the margins beset with teeth. in a pectinate arrange- 

 ment. The terminal lobes (fig. 18) are obtusely conical. and 

 furnished at the point with 3 spines. about equal in size. 



