184 procp:edings of united states national museum. 



Ocelli in two large clusters ou eacli side of the head, the anterior groups 

 largest, somewliat triangular, covering the anterolateral mai^gins and 

 extending upward and backward on the head, where they terminate on 

 each side in a small subdorsal group of ocelli, more distinct than the 

 rest; just back of these are two distinct clusters of ocelli. Transverse 

 fossse run up on each side, in line with the posterior groups of ocelli. 

 Proboscis large, finely papillose, reddish. Length, 50'"" or more. 



I have also met with another species, which agrees nearly with ^4. 

 ])ulcher, as described by M'Intosh, and with which it is i)robably 

 identical. 



Atnphiporus Stimpsoni Verrill {=^Ommatoplea ISttmpsoni Girard, in Stimpson). 



This is very common in Massachusetts Bay and northward to the 

 Bay of Fuudy and Labrador, from low-water mark, under stones, to 

 100 fathoms. It is easily recognized by its clear, dark purplish or cho- 

 colate-brown color above, with pale margins and a squarish or triangu- 

 lar white spot ou each side of the head, and usually with a narrow 

 white band across the neck ; beneath, pinkisli or flesh-color. Ocelli in 

 two or more rows in an elongated group on each antero-lateral margin 

 of the head, and a pair of small subdorsal clusters on the transverse 

 white nuchal band. Often loO'""^ long and 8"" to lO'"'" broad. 



The Planaria migulata of Otho Fabricius was probably based on this 

 species ; but his description is insufticient to determine this with cer- 

 tainty. 



Amphiporus lactifloreus M'lutosh. 



Common at Eastport, Me., under stones, at low- water mark. Its color 

 there is usually pale flesh-color, or dull whitish or grayish. Length, 50°°^ 

 to 100°!'^. 



Amphiporus cruentatus, sp. nov. 



A species peculiarly characterized by having red blood, so that the 

 vessels appear distinctly red through the translucent integument. Body 

 flaccid, versatile, slender, tapering to both ends ; head not very distinct ; 

 snout strongly ciliated. Ocelli about 12 on each side of the head, in 

 an interrupted longitudinal row, the most anterior one considerably 

 larger. . Two slight transverse grooves on each side of the head, appar- 

 ently not extending across the dorsal side, but the anterior ones curve 

 forward in front of 'the ganglia, and the posterior ones behind the 

 ganglia. Proboscis long, densely covered with elongated, conical papil- 

 lae. A simple central stylet and two small lateral ones on each side. 

 Color light reddish salmon, mth conspicuous bright red median and 

 lateral blood-vessels, containing a corpusculated red fluid. 



Vineyard Sound, 4 to 5 fathoms, July 21, 1875. 



Tetrastemma vermiculus Ebr. (?): M'Intosh. 



This species, as determined by M'Intosh, was common on the piles of 

 wharves at Gloucester, Mass., in 1878. Color pale grayish or yellowish. 



