37 



at' Bugvalkene og deres Borster ere meget talrige (T. VI, 

 Fig. 2ii), kortere og tykkere (Fig. 27) end de jjaa den 

 ovrige Del at' Kroppen (Fig. 2.')) og tillige let brunttarvedc. 

 medens disse ere tarvelose. Bag disse tire Led konnner et 

 o — -i'"'" langt, glat Ror, som mod Enden er lidt opdrevet 

 l)aa Dorsalsiden og her ender med en liden Tap. der 

 hænger udover den kortere, brede Laulerlæbe tor Analaab- 

 ningen (T. VI, Fig. •22). Rorets Overtiade er tværturet 

 over E.j'gHaden og begge Sidetlader; paa Bugtladen deri- 

 mvd tindes der to longitudinale Folder som Fortsættelse at' 

 Bugvalkene (T. VI, Fig. 23). Ved at komprimere denne 

 Uel og undersoge den under Mikroskopet sees den at være 

 beklædt al' en Chitinhiid, der gaar i et med Kroppens; den 

 er desuden forsynet med et Lag Ring- og et Lag Længde. 

 muskler og inde i Roret kan Tarmkanalen skimtes. Hos det 

 ene Exemplar manglede dette Ror (T. VI, Fig. 28). 



Hvad enten nu dette er en udkrængbar Analtrakt, 

 der kan trækkes ind i Kroppen eller den altid er ude. saa 

 er den tilligenied de 4 fodkmidebærende Led saa mærkelig, 

 at Dyret kanske rigtigst burde lienfores til en ny Slægt- 

 men da det forresten viser saa stor Overensstemmelse med 

 AniMotrypane aiihgasier. har jeg foretrukket at lienfore det 

 til samme Slægt. 



Sphærodorum abyssorum, n. sp. 



Stat. 33. 



Et mindre vel bevaret Exemplar, ca. I ctm. langt, 

 tilspidset i begge Ender (T. VI, Fig. LU). Chitinhuden 

 er losnet over hele Bagenden, og ogsaa hist og her ellers. 

 Dyret har mest Lighed med Ephesia gracilis. Det har 

 som denne smaa klare Papiller paa Ryg- og Bugtladen; 

 tiere saadanne tindes ogsaa jjaa hver af de kuglelormige 

 Rygcirrer (T. VI, Fig. 18), der ere fy kite med Celler, fuld- 

 konanent afgrændsede fra det ovrige Hypoderm, men hvis 

 nærmere Anordning paa Grund af Præparatets Tilstand ei 

 kan udredes. Ogsaa paa Enden af Fodknuderne tindes 

 Papiller, og disses Borster række noget længere frem end 

 hos Ephesia (/rar/lis: der er som hos denne en Aciciila i 

 hvert Borstebundt. De 4 — h andre Borster ere sammen- 

 satte; paa den bredere skraat afskaarne Ende sidder en 

 liden tynd, krummet Spids (T. VI, Fig. 19). Lignende 

 Borster tindes hos den af Graff i Ann. & Mag. of Natural 

 History Vol. XX beskrevne Sphærodorimi Claparedi. 



with true pedal protuberances (Pl. VI, tig. 22), bearing 

 two fascicles of bristles. The pedal protuberances may be 

 regarded as a continuation of the ventral prominences; their 

 bristles are exceedingly numerous (PI. VI. tig. 2G), shorter 

 and thicker (fig. 27 i than those occurring elsewhere cm the 

 body (tig. 25), and of a lightish l)rown. whereas the latter 

 are colourless. Posterior to these 4 segnn^nts is seen a 

 smooth lobe, 3""" — 4'"'" long, somewhat raised at the extremity 

 on the dorsal side, and terminating there in a slender spigot- 

 shaped projection reaching out over tlie broad and com- 

 paratively short nether lappet of the anal opening (PL 

 VI, tig. 22). The lobe is transversely striated both on the 

 dorsal and the lateral surfaces, whereas on the ventral 

 surface occur two longitudinal folds, [jrotending from the 

 ventral prominences (PI. VI. Fig. 23). On compressing this 

 tube and examining it under the microscope, it is founil to 

 be invested with a chitinous integument coalescing with that 

 of the body; moreover, it has a layer of annular and a 

 layer of longitudinal muscles, and within the tube can be 

 discerned the intestinal canal. In one of the specimens 

 the tube was wanting (PI. VI, fig. 28). 



Now, whether this tube be an exserted anal tract 

 admitting of being invaginated into tiie body, or whether it 

 be non-retractile, it certainly constitutes, along with the 4 

 pedal protuberances, so remarkable a sharacter, that a 

 new genus should, perhaps, be established for the reception 

 of the animal; but, possessing as it does, so much in 

 common with Ammoirypane auJofjaster, I have nevertheless 

 referred it to the same a;enus. 



Sphærodorum abyssorum, u. sp. 



Stat. 33. A 



A somewhat nmtilated specimen. 1"" in length, with 

 acuminate extremities (PI. VI, lig. IB). The chitinous 

 integument was detached over the whole of the posterior 

 part, and here and there also in other places. This animal 

 bears most resemblance to Ephesia (jyarilis, and is, in 

 common with that form, furnished with small, transparent 

 papillæ on the dorsal and ventral sui'faces; several papillæ 

 of the same kind occur, too, on each of the globular dorsal 

 cirri (PI. VI, Kg. 18), which are composed of cells, per- 

 fectly distinct from those in the remaining portion of the 

 matrix; their arrangement cimld not. however, be distin- 

 guished owing to the bad state of the specimen. Papillæ 

 also occur at the extremity of the pedal jn-otuberances, 

 whose bristles reach a tritie farther out than do those in 

 Ephesia gradlis; as in that form, eacii fascicle is furnished 

 with an acicula. The remaining bristles (4 or 5 ) compound ; 

 at the broad, obliquely truncate extremity is seen a small, 

 slender, arcuate point (PI. VI, tig. ISt). Similar bristles 

 occur, according to Graft' (Ann. & Mag. of Natm-al History, 

 Vol. XX), in Sphærodorum Claparedi. 



