Indian Deep-sea Dredgincj. 1G9 



pointed and recurved towards the outer (^/>), and with a small 

 triangular process on the inner margin of the endopodite 

 {en) as in Parapasijjhae. 



Second maxillas (PI. XI. fig. 3) with well-developed inner 

 {ex) and middle {bp) laciniffi, the latter of which is bilobed, 

 thus differing from those of all * previously described genera, 

 in which both lacinise are reduced to a quite rudimentary- 

 condition ; and with a relatively very large and powerful 

 scaphognathite, in correlation to the spacious efferent branchial 

 channel. 



First maxillipedes (Pl.XI. fig. 4) with well-developed endo- 

 podite {en) and middle {bp) and inner {ex) lacinia3, the latter of 

 the two last of which, though decidedly weaker, is nevertheless 

 produced inwards to the same level as the former, and is fairly 

 well fringed, thus also differing from all previously described 

 genera, in which indeed little besides the exopodite of these 

 jaws remains, the laciniai being both reduced to a more or 

 less scanty fringe of weak setse and the endopodite to a 

 minute projection of the inner margin of the exopodite, whilst 

 the epipodite when present is smaller {Parapasiphae) or alto- 

 gether wanting {PasipJiae). The exopodite gives off from its 

 inner margin just below the true apex a pedunculated oval 

 plate, which serves as the occlusor apparatus of the efferent 

 branchial aperture and, in correlation with the large size of 

 that aperture, is much larger than in any other genus. 



Second maxillipedes (PI. XI. fig. 5) almost exactly as in the 

 Pena3idea, seven-jointed, the division between the second and 

 third joints being still quite distinct at the edges ; furnished 

 with a short tapering exarticulateexopodite (e^), which scarcely 

 exceeds the third joint in length ; and with a complete podo- 

 branchia {ep + br) , thus contrasting strongly with those of previ- 

 ously described genera, in which the corresponding appendages 

 are weaker and but six-jointed, the second + third being indistin- 

 guishably fused into one, there is never any trace of an exo- 

 podite, and the podobranchia is represented at most by a small 

 epipodite and may be entirely wanting. 



Third maxillipedes (PI. XL fig. 6) four-jomtedf, as inPanrphae, 

 Ph^e, and Parapasiphae, furnished at the base with a rudimen- 

 tary epipodite, and, quite close to the base of the second joint 

 (2 + 3 + 4), with a minute tapering exarticulate exopodite, 

 similar to, but much smaller than, that of the second maxilli- 

 pedes, and lodged in a groove in the side of the joint. 



* Except Leptochela, which would appear to have fully developed 

 second maxilliB. 



t Leptochela has five, aud is so far less modilied than any other genus. 



Ann. (& Mag. N. Hist. Ser. 6. Vol. xi. 12 



