1920. 



89 



(4) Tile abdomen nfthe female having' a row of stroiifr cliaracteristic spines on 



tlie posterior marj^ins of both surfaces of the first seven abdominal 

 seg-meuts. 



(5) By the inteaument of tlie abdomeu being covered for the most part witli 



scales and minute spines. 



Scales are also j^-esent in two genera, occurring on marine mammals, 

 but in both these they are of a totally different construction, beinu- 

 attached to the integument l)y means of a minute stalk, whereas in 

 Xeolinof/nafhus they form part of the integument itself, and may be 

 only rudimentar}' spines. 



J^eoJinor/natlnis eleplianttiU, sp. nov. 



5 , Head mucli longer than broad, widening but little behind the antennae, 

 the occipital area entering a broad U-shaped groove in the thorax. Forehead 

 conical, with four minute hairs on each side ; on the 

 dorsal surface behind the anterior margin there is a nar- 

 row transverse band slightly darker than the rest of the 

 head, and between the antennae there is a median trans- 

 verse suture, which projects forward on each side 

 towards the anterior basal margin of the antennae; 

 between this structure and the antennae there is a 

 short hair on eiicli side, another short one a little 

 distance beneath it, and a minute hair a short distance 

 above it. On the ventral surface there is a longish hair 

 on each side between the antennae, and two minute 

 admedian ones some distance beneath these. On the 

 margins of each temple there are four or live minute 

 hairs, and two admedian ones in a line with the base of 

 the temples, T/iora.v narrow in front, broadening to- 

 wards the abdomen ; sides I'ounded, with a minute 

 hair near the middle. The parts of the dorsum are 

 very indistinct and hard to make out. Sternal plates 

 elongated and narrow, almost touching the first pair uf 

 coxae, J^effs : the legs have been dealt with under 

 generic characters, and parts not described there can 

 be clearly made out in the illustration. Abdome)t 

 elongated, shaped as in lig, 1. First seven segments 

 with a row of strong spines on tlie posteiior margins 

 of both surfaces, which are peculiarly constructed (see 

 figure). The ventral surface of the first segment is 

 covered with minute .spines in front, then about seven 

 rows of .scales, which are directed in precisely the 

 opposite direction to those on the head, and beneatli 

 these again there are more minute spines, some of 

 which have a very minute hair at their apices. The 

 dorsal surface is similar, except that there appear to 



be no spines in front of the scales. The second, fourth, and sixth segments 

 are covered both dorsally and ventrallv with small scales The third, fifth, 



1. ICeoliiw/iifi/huselephantttli, 9. 



2. Ditto, (^.genitalia. 



