No. 477] 



RHODE ISLAND COPE POD A 



65r 



On each side of the mouth there is the structure representetl in 

 Fig. 21 wliose identity is not clear hut which probahly represents 

 the maxiUa. It is a ridge which hears in front a 2-j()inted appen- 

 dage and ends posteriorly in a strong spiuv. Tlie hasal joint of 

 the appendage is drawn out posteriorly into a cui vrd spine. suolU'n 

 at base. It is possible that this represents the outer rannis and tiie 

 basal portion of the appendage, 'i'he distal joint is oval, outwanllv 

 directed, and ends in two strong bristles. The first nia\iilipe<l 



toothed or bristled. The second luaxilUped ( Fiu-. 20) is ;!-jointed. 

 The basal joint bears near the middle of its inner snrfa( (> a strong, 

 backwardly directed spine. The second joint is about one half 

 as long as the first. The distal joint is a sickUvsliaped hook with 

 a spine at base. The mouth is supplied with a protrnsible pro- 

 boscis which is a truncated cone arnu-d at ilie apex with a circle 

 of inwardly directed spines. This suggests that the rnetanaiiplius 

 is ready to attach itself to a host. 



At the posterior end. the carapace bears a pair of swiminini:' 

 legs. The first of the free thoracic segments bears a pair of leu's 

 and the second has on each side two spines. Two segments follow, 

 the first witliout appendauvs. an<l the s(>cond. the anal H-iiient, 

 with the short furca. The two pairs of leu'^ are very nnnlar. 



feathered bristle on the tip of the outer edur of each l.a>al joint. 

 The outer ramus of the first pair of swinuninu- feci has four spines, 

 one at the outer side and three at the end. an<l three long feathered 



