LEODICIDyE OF THE WEST INDIAN REGION. 



77 



The anterior aciculse have a bluntly rounded end, and in this respect they agree 

 with the dorsal ones of later somites (text-figure 275). Each has a translucent margin 

 with a brown central core. The ventral aciculse of later somites are slightly enlarged 

 toward the end, then bent slightly, and end with a terminal and subterminal tooth 

 covered by a hood. Like the others, these have a central brown core (text-figure 276). 



The maxilla is very small, the one drawn (text-figure 277) being not more than 

 0.75 mm. long. It is extremely delicate and transparent. The carrier is small, blunt- 

 pointed posteriorly, with a faint, darker-brown outer margin and a broader patch of 

 brown along the line of contact of the two halves. The forceps are relatively rather heavy. 

 The proximal plates have 6 teeth on the right and 5 on the left, the right distal with 11, 

 the left distal with 4, the unpaired with 5 larger and a very small sixth. A brown cres- 

 centic patch lies distal to each distal paired plate. The mandible (text-figure 278) is even 

 more transparent than the maxilla, though a trifle longer. The shafts are very slender, 

 united only at their distal ends. The beveled portion is very indistinct and there is a 

 long horn-like process on either side. The only trace of color is a patch in the middle 

 between the two halves of the beveled portion. 



Paramarphysa obtusa was collected in shell sand at Flatts Inlet, Bermuda. The 

 type is in the Yale University Museum. 



269 



273 



276 



TEXT-FIGURES 269 to 278. Paramarphysa obtusa Verrill. 



269. Head x24. 



270. First parapodium x!42. 



271. Tenth parapodium x!42. 



272. Simple seta x333. 



273. Compound seta x666. 



274. Pectinate seta x666. 



275. Posterior dorsal acicula x666. 



276. Posterior ventral acicula x666. 



277. Maxilla x66. 



278. Mandible x66. 



279. First parapodium of Onuphis 



magna Andrews x!8. 



