size it was not possible even with the liighest vntig- 

 nification to see enough details to make an accurate 

 drawing of this appendage (five specimens 

 examined). 



Remaining appendages consisting of mandible 

 (fig. 166), first maxilla (fig. 167), and second 

 maxilla (fig. 168) contained within the mouth- 

 tube. Figure 169 illustrates position of appendages 

 within tube. All other appendages lacking. Egg 

 sacs broken on all but one specimen ; sacs held close 

 to body on either side of abdomen ( represented by 

 dotted lines on fig. 165) and containing 50 to 75 



eggs. 



Color in life, cream. 



Male. — Unknown. 



EtynwTogy. — This species is named for Richard 

 Gooding who made preliminary examinations of 

 this species and firet recognized it as new. 



Remarks. — This species can be separated from 

 all other species of Coloiomatiis except C. nmrae- 

 nae by the two cephalic lobes present in the other 

 species. It can be separated from C muraenae by 

 the presence of a posterior lobe between the caudal 

 rami in the new species (no such lobe in C. 

 muraenae). 



Sites of infestation. — Oolobmnatv-^ goodingi lias 

 been found in three of the major lateral line canals 

 on the heads of needlefislies : preoperculomandib- 

 ular (from the tip of the lower jaw posteriorly) : 

 interorbital (above each eye) ; and preorbital 

 (short canal in front of eye) . C. goodingi has occa- 

 sionally been found on the upper jaw which does 

 not appear to have a distinct branch of tlie lateral 

 line system. The most common site of infestation 

 (51 of 66) in Sfro-ngyhira Jiotata. is the lower jaw, 

 where a large easily visible swelling fonns (fig. 

 171) . The next most common site in S. notata is in 

 the interorbital canal (11 of 66 sites). Only three 

 infestation sites were on the upper jaw and one was 

 in the preorbital canal. Similar swellings were 

 present in infested S. Tnarina and S. timucu. 



No distinct capsule (fig. 171) such as is present 

 in western Atlantic species of StrongyJura was 

 found in any specimens of TyJosurus or Ahlennes. 

 In Ablennes, expansion of the lateral line canal is 

 usually internal and makes it very difficult to detect 

 infested specimens; consequently, O. goodingi was 

 at first thought to be confined to western Atlantic 

 species of Sfrongylura. 



Twenty-one of 24 Venezuelan specimens of 



COPEPODS AND NEEDLEFISHES 



Tylosunts crocodilns (132-300 mm. BL) were in- 

 fested with 0. goodingi. Of 46 sites, 37 were on the 

 lower jaw (19 on the left and 18 on the right) and 

 9 were in the interorbital canal (4 on the left and 

 5 on the right) . Three Bahamian and one Jamaican 

 specimens each had an infestation site on the right 

 side of tlie lower jaw. A specimen of T. crocodilus 

 from Haiti had one small C goodingi in the left 

 interorbital canal and one on each side o£ the lower 

 jaw. 



Histopafhology. — Seven C olobom.<it'us lesions 

 were examined in step-serial sections prepared 

 from mandibles and maxillae of four Strongylura 

 notata from Bimini. Tliese tissues had been fixed 

 in 4 percent fonnalin and were decalcified in 5 

 percent formic-citrate before sectioning. Staining 

 was hematoxyline and eosin. 



Reactions to the Colohomatus were variable, 

 ranging from almost none (fig. 172) to a nearly 

 complete obliteration of the involved lateral line 

 canal by gi-anulation tissue, inflammatory infil- 

 trate, and, in some infestations, new bone forma- 

 tion (fig. 173). New l)one formation was always 

 orderly and showed no evidence of neoplastic 

 transformation. In one example the formation 

 could be related to fracture of an adjacent bone 

 trabeculum. New bone formation was always as- 

 sociated with marked chronic osteitis or osteitis 

 combined with microfracture. 



The epithelium lining the canals occupied by 

 Coloiomatus was generally only a few cells thick, 

 and the cells were extremely flat except where 

 underlying inflammation was pronounced. In the 

 latter situation, tlie epithelium was thickened and 

 usually diffusely infiltrated by the cellular 

 i-eaction. 



The inflammatory infiltrates were comix>sed 

 mainly of lymphocytes and macrophages. Mono- 

 nuclear eosinophils were moderately numerous, 

 often fonning small clusters. Occasionally, the 

 granulation tissue contained fairly discrete granu- 

 lomas, and the epithelioid cells within these granu- 

 lomas contained deposits of eosinophilic material, 

 possibly derived from phagocytosis of the necrotic 

 ova commonly present within the cavity (fig. 174). 



HOST-PARASITE LIST 



The species of copepods collected from each 

 species of needlefish are given in this section. The 



393 



