296 PRONEOMENIA. 



Proneomenia filiformis HANSEN, Bergens Mus. Aarsberetning, 

 1888, no. 6, p. 10. 



Simroth and Pruvot simply repeat Hansen's brief diagnosis. The 

 specimen is unique in the Bergen Museum, and has not been cut, so 

 that the internal features are still unknown. 



Subgenus Amphimenid Thiele, 1894. 



Amphimenia THIELE, Zeitschr. f. Wissensch. Zool., Iviii, p. 273, 

 244. 



Radulauniserial ; having gullet glands and lobed salivary glands; 

 spicules of two forms; cloaca simple. Type P. neapolitana. 



P. NEAPOLITANA Thiele. PI. 43, figs. 25, 26, 27, 28. 



Body elongated, round, with very strong integument, bearing two 

 kinds of spicules : some small, hollowed, tapering to a point at each 

 end, usually somewhat curved, and others considerably larger, 

 pointed at one end only, being rounded at the other or running out 

 in a sharp margin (fig. 26, 27). The smaller spicules lie tangential 

 or obliquely in the cuticular layer, the larger ones perpendicular, with 

 projecting points (fig. 25). Ventrally the latter sort fails, and the 

 smaller ones become perpendicular. Ventral groove with a rather 

 narrow median fold, a smaller one on each side of it, bordering the 

 spiculose cuticle ; wholly disappearing before it reaches the cloaca ; 

 in the space between them lies a preanal gland, below the hypodermis. 

 Radula with one row of teeth, each tooth rounded in the middle in 

 front, tapering at the sides, narrowed behind and running out in two 

 rather long and acute points, which overlie the following tooth (fig. 

 28). Cloaca small. No copulating organ or penis spicules. Length 

 about 30, diam. 1'5 mill. 



Naples. 



Proneomenia neapolitana THIELE, Zeitschr. f. AViss. Zool., 1889, 

 xlix, p. 429 (footnote) ; 1. c., p. 392 (no name) ; Biol. Centralbl., xi, 

 p. 725. F. (Amphimenia) neapolitana THIELE, Zeitsch. Wiss. Zool., 

 Iviii, p. 244, pi. 14, 1 5, f. 51-94. 



Subgenus SIMROTHIELLA Pilsbry, 1898. 



Solenopus (in part) KOREN & DANIELLSEN, Arch. Math, og 

 Naturvid., ii, p. 120. SIMROTH, in Bronn's Klassen u. Ordnungen 

 des Thier-Reichs, p. 228. Not Solenopus Schonherr, Curcul. Disp. 

 Meth., p. 268, 1826. 



