42 Annelida Ohcetopoda 
ARABELLA (Gruhe) Ehlers. 
Ehlers. Borstenwiirmer, p. 398. 
Arabella opalina Verrill. 
Lumhriconereis splendida Leidy. Mar. In v. Fauna R. I. and N. J. , p. 10. 
" opalina 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 {Qruie) Ehlers. 
Staurocephalus pallidus Verrill. 
Invert. Animals of Vineyard Sound, etc., p. 595 and p. 348. 
Through the kindness of Prof. Verrill, I have been 
able to compare my specimens with those found by him 
in the Sound near New 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 15°"°. 
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 between the basal and terminal parts of the dorsal 
