Meinert.l lOA [Oct. '2, 



ferred by me to the above named species ; but the specimen is so 

 badly preserved, that no further or closer investigations have 

 been possible either of the characters of the genus or of those 

 of the species. 



3. Gen. Bra nchiostoma. 



Branchiostom-a Newport, Trans. Linn. Soc. Lond., xix, p. 411. 



Lamina cephaliea a lamina prima dorsali partim obtecta. 



Oculi ocellis 4. 



Antenna? longiusculae, tenuiusculse, manifesto attenuate, 18-21-articu- 

 latae. 



Labri fimbria brevis, setis simplicibus. 



Labii processus subconici, barba e setis brevibus, densis, uncinatis facta ; 

 palporum fimbria e setis brevibus, densis, uncinatis facta. 



Palporum maxillarium unguis in latere interiore dentibus binis longis, 

 acutis armatus ; fimbria digitalis setis parum uncinatis, ungueni nullo 

 modo explens. 



Mandibular ante pectinibus 10-12 juxta et pone lamellam dentatam 

 coarctatis instructae. 



Metameri quarti sternum integrum, sat robustum ; presternum longe 

 prominens, ante in dentes majores incisum ; pedes prensorii articulo 

 secundo et tertio minimis, interruptis. 



Segmentum septimum spiraculis instructum. 



Spiracnla sat profunda, magna, subovalia vel post subtriangula, fere 

 perpendicularia ; antica abrupte major a minusque profunda. 



Pleurae posticse infra porosse. in spinam longam productae. 



Pedes anales elongati, quinquearticulati, articulo primo (femore) 

 spinigero vel inermi, ungue minus curvato, subgracili ad basin unguiculis 

 binis longioribus, rectis armato. 



1. Branchiostoma affine. 

 Branchiostoma affine Kohlrauscb, Beit. z. Kenntn. d. Sc, p. 22. 



Arch. f. Naturg. Jahrg., 47, p. 68. 



Fusco-griseum vel flavum, in dorso medio linea angusta, pallida nota- 

 tum, pedibns antennisque flavis ; sat gracile, manifesto sparse punctatum, 

 laminis ventralibus integris, capite subovali, immarginato. Antennae 

 breviusculse, 18-ariiculaiae, prseter articulos lernos priores dense, brevis- 

 sime hirsutae, articulis mediis longiusculis. 



Dentes prosternnles quaterni, obtusi, per paria approximati, exteriores 

 minores vel evanidi ; dens coxalis obsolete trilaciniatus. 



Pedes anales perlongi, graciles, in latere interiore femoris spinis parvis 

 3-5 in seriem singdlam, in latere in feriore spinis 4-7 in series binasdigestis 

 armati. 



Laminae dorsales quatuor priores omnino, 5-7 fere immarginatae, ceteroe 

 manifesto marginatae. 



