46 



cylindrisk, kun lidet afsmalnende bagtil og bar sidste Seg- 

 ment betydelig længere end de foregaaende. 



Rygskjoldet er forholdsvis stort, ligesom opsvulmet og 

 aeppe mærkeligt indknebet i sit forreste Parti. Detdækker 

 nasten fuldstændigt Forkroppen, kun ladende en ubetydelig 

 Del af sidste Segment oventil frit. Dets forreste Eand er 

 i Midten stærkt udbuet. dannende en bredt afrundet Pande- 

 plade. der delvis dækker Roden af Øinene; den bågeste 

 Rand er oventil kun ganske svagt udrandet. Cervicalfuren 

 er skarpt og tydeligt markeret, og den foran samme belig- 

 gende Del af Rygskjoldet er ovenfra seet kjendeligt bredere 

 end Bagkroppen. 



Øinene (se Fig. 2) er meget smaa og ufuldkommet 

 udviklede samt rager ikke som sædvanlig! ud over Ryg- 

 skjoldets Sider. Af Form er de kort pæreformige og noget 

 affladede, med den pigmenterte Del oventil kun indtagende 

 den alleryderste Randzone. Pigmentet er som bos de øvrige 

 Arter a f Slægten smukt lyserødt, Derimod er Facetteringen 

 kun lidet tydelig. 



Iste Par Føleres Skaft {ibid.) er af den sædvanlige 

 Bygning og omtrent af samme Længde som den foran Cer- 

 vicalfuren beliggende Del af Rygskjoldet. Svøbemes Længde 

 kan ikke nøiere bestemmes, da deres ydre Del paa det 

 undersogte Exemplar var afbrukket. 



2det Par Føleres Blad (ibid.) er forholdsvis af ikke 

 ubetydelig Størrelse, næsten l j 3 længere end Iste Pars Skaft 

 og af aflang lineær Form. med den ydre Kant ganske glat 

 og lige samt fortil endende med et lidet tandforinigt Frem- 

 spring, den indre svagt buet og Enden meget skraat af- 

 skaaren i Retningen indenfra udåd. Langs den indre Kant 

 og Spidsen er fæstet et temmelig betydeligt Antal af lange 

 Fjærbørster. 



Fodderne er af den for nærværende Slægt characteri- 

 stiske spinkle, traaddannede Form. Kun enkelte a f dem var 

 endnu i Behold paa det undersøgte Exemplar, og disse viste 

 en lignende stærkt forhenget Form som hos E. cibyssorum, 

 idet det ydre Parti (Fig. 3) var særdeles langt og tyndt, 

 med de 2 sidste Led tilsammen neppe overstigende l / 3 af 

 det foregaaendes Længde. 



Æggeposen eller Marsupium var paa det undersogte 

 Individ meget stor og fyldt med næsten fuldt udviklede "Unger. 



Det midterste Halevedhæng (se Fig. 4) viser det for 

 Slægten characteristiske Udseende. Det er ganske kort, 

 neppe længere end bredt og bærer paa den næsten lige af- 

 skaarne Enderand 4 omtrent lige lange Torner og i Midten 

 2 fint cilierede Børster. 



De ydre Halevedhæng (ibid) har særdeles smale og 

 forlængede, lancetformige Endeplader, begge rundt om be- 

 satte med lange Fjærbørster. Den ydre er omtrent 1 j i 

 længere end den indre, der ved Basis viser det sædvanlige 

 Høreapparat. 



Hele Dyrets Legeme var i frisk Tilstand i boi Grad 

 gjennemsigtigt og næsten uden nogen Pigmeutering. saa at 



of the genus, very slender. cylindrie, tapering but little 

 posteriorly, and has the terminal segment much longer than 

 any of those preceding it. 



The carapax is comparatively large, as it were swollen. 

 and well-nigh imperceptibly constricted in its anterior part. 

 It covers almost the whole of the cephalo-thorax. Leaving 

 but a very small jjortion of the last segment uncovered 

 ahove. Its anterior margin is considerably arcuate, forming 

 a hroad. rounded frontal plate, which partially covers the 

 base of the eyes; the posterior margin is but slightly emar- 

 ginate above. The cervical groove is sharply and distinctly 

 marked, and the portion of the carapax lying anterior to 

 it has, when viewed from above. a diameter perceptibly ex- 

 ceeding that of the posterior division of the body. 



The eyes (see fig. 2) are exceedingly small and imper- 

 fectly developed, and, contrary to what is usually the case. 

 do not project over the sides of the carapax. In shape, 

 they are abrupt-pyriform and somewhat applanated, with 

 the cornea occupying, above, only the outermost marginal 

 zone. The pigment, as in the other species of the genus, 

 is a beautiful light-red. On the other hand. the areolar 

 structure of the cornea is anything but distinct. 



The peduncle of the Ist pair of antennæ (ibid.) has 

 the usual structure. and well-nigh the same length as the portion 

 of the carapax placed anterior to the cervical groove. The 

 length of the flagella cannot be accurately given, their outer 

 part in the specimen examined having been broken off. 



The scale of the 2nd pair of antennæ (ibid.) is 

 comparatively large, almost one-third longer than the ped- 

 uncle of the Ist pair. and oblongo-linear in form. with the 

 outer margin quite smooth and straight and terminating 

 anteriorly in a small dentiform projection; the inner margin 

 is slightly arched. and has the extremity verv obliquely 

 truncate, from within to without. Along the inner margin, 

 and at the point. are attached a considerable number of 

 long. plumose bristles. 



The legs exhibit the slender, filiform appearance charac- 

 teristic of the present genus. A few only were left in the 

 specimen examined, and these had a very elongated form, 

 similar to that in E. abyssorum, the outer portion (fig. 3i 

 being extremely long and slender. with the two last joints, 

 tåken together, scarcely exceeding by one-third the preced- 

 ing articulation in length. 



The incubatory pouch, or marsupium. was verv large in 

 the specimen examined. and full of almost mature young. 



The telson (see fig. 4) exhibits the appearance charac- 

 teristic of the genus. It is quite short, scarcely longer than 

 broad. and has on the well-nigh truncate terminal margin 

 4 long spines. about equal in length, and in the middle 2 

 delicately ciliated bristles. 



The outer caudal appendages (ibid.) have 2 exceedingly 

 narrow and prolonged. lanceolate terminal plates, both beset 

 round the edges with long. plumose bristles. The outer 

 plate is about one-fourth longer than the inner. which ex- 

 hibits at the base the usual auditory apparatus. 



The whole body of the animal, in a fresh state, was 

 well-nigh translucent, and scarcely at all pigmented. so that 



