242 



Anrwlida CJwetopoda 



ARABELLA {Ghrube) EMers. 

 Ehlers. Borstenwurmer, p. 398. 



Arabella opalina Verrill. 



Lumi>riconereis splendida Leidy. Mar. Inv, Fauna R. I. and N. J., p. 10. 



" (?pa^i7ia Verrill. Invert. An. of Vin. Sound, etc., p. 594, 



pi. xiii, figs. 69, 70 ; also p. 342. 



Very common at low water; also dredged frequently. 



I have received from Prof. Verrill advance sheets of a 

 check list of Marine Invertebrata of ^ew England, in 

 which the generic position of this species is rectified as 

 above. 



STAUROCEPHALUS (Gruhe) Ehlers. 

 Staurocephalus pallidus Verrill. 



Invert. Animals of Vineyard Sound, etc., p. 595 and p. 348. 



Through the kindness of Prof. Yerrill, I have been 

 able to compare my specimens with those found by him 

 in the Sound near ]N"ew Haven. This species is rare in 

 Virginia. I found only five during the entire season. 

 They differ from the Sound specimens only in being nar- 

 rower ; specimens nearly as long as the type forms not 

 being more than 1™°" in diameter. The length (50"^°") given 

 by Verrill (1. c. p. 596) is not correct. In alcohol the 

 longest of the two original specimens, has a length of Ib^"^. 

 The antennae are longer than the head ; composed, when 

 perfect, of 12 articles. The palpi (lateral or anterior an- 

 tennae) have a stout cylindrical basal part, forming about 

 three-fourths of their entire length, and a terminal fusi- 

 form article, separated from the basal part by a deep con- 

 striction; they are shorter than the antennae, but longer 

 than the head. The head is somewhat elongated, more 

 so than in the following species. Eyes small, orange-yel- 

 low, the front pair largest. In living specimens the con- 

 striction b€tween the basal and terminal parts of the dorsal 



