NEMATOBRACHION BOOPIS. 267 



30. Nematobrachion boopis Calmax. 



Phitt' 10, figs. -1:1-411. 



1890. Ncmalodactyliis boopis Calman, Tran.s. Roy. Iri.sh Ac:ul., 31, p. 17, pi. 2, figs. 19-28. 

 1905. NoiKiltrhrarhion boopis Calman, Rejit . iSeaand Inland Fisheries of Ireland, 1902-3, pt. 2, App. 4, 

 p. 153, pi. 2(1. 



Sta. 4081. Dec. 8, 1904. Lat. 18° 47.1' S., long. 89° 20' W. 300 fms to surface. 2 specimens (1 cf, 



1 iinmat.). 



c. A,'c- I-. ,, ,.„,, T , .-..-.o ,,, -/ ^. 1 r,-o .„>,.' „• 1 300 fnis. to surface. 1 specimen. 

 Sta.40S(. Dec. 11, 1904. Lat. 22 49.0 .S., long. Oi 30.0 \\ . ■ ,, ,. , . ,. , • 



( 212o tms. to surlace. 1 specnnen. 



Sta. 4095. Dec. 23, 1901. Lat. 2.5° 22'.4 S., long. 107" 45' \V. 300 fms. to .surface. 1 specimen. 



Sta. 4705. Dec. 2.S, 1904. Lat. 1.5° 5.3' S, long. 99° 19' W. 300 fms. to surface. 2 specimens. 



Sta. 4707. Dec. 29, 1904. Lat. 12° 32.2' S., long. 97° 42' W. 300 fms. to surface. 1 specimen. 



Sta. 4722. ,lan. 10, 1905. Lat. 9° 31' S., long. 100° 30.5' W. 300 fms. to surface. 1 specimen. 



Sta. 4724. Jan. 17, 1905. Lat. 11° 13.4' S., long. lt)9°39' W. 300 fms. to .surface. 1 specimen. 



Sta. 4742. Feb. 15, 1905. Lat. 0° 3.4' N., long. 117° 15.8' \V. 300 fms. to surface. 1 specimen. 



Descn'pliiiu. — Body somewliat cliinisy. — The frontal plate i.s a \'ery ishort 

 triangle with the \'ertex oI)tu.se and without any vestige of a ro.stnun; the 

 lateral margin.s are very conspicuously raised, nearly vertical; the keel between 

 the cervical groove and the tip of the frontal plate is rather high, with a short 

 portion slightly in front of the middle a little more raisetl and feebly angular. 



The eyes are extremely large, dark brownish or nearly blackish above on 

 the somewhat flatly \'aulted upper surface; somewhat lighter on the outer side, 

 on which is seen a netu'ly horizontal or somewhat oliliciue light groo\'e, sejiarating 

 the \'ery large ujiper section from the lower small section which is developed only 

 on the outer side and less than twice as high as the ujjper. — The antennular 

 peduncles are short and robust, the proximal joint very considerably raised above 

 at the distal end at)out as a transverse, subvertical lobe which, seen from in 

 front, is subtriangular, much broader than high, with the \'ertex l)roadly rounded 

 and very setose; the joint has no si)iniform process at the outer distal angle. 

 Second joint somewhat \aiillcd abn\e towards the end, slightly pro(hic('d above 

 the base of third jninl, with the up])er outer corner nf ihis pruduced jiart either 

 angular or feebly ])rojccting as a small, short tooth. Third joint wilh the dur,s;d 

 keel rather short and moderately low. — Antennal s([uama somewhat narrow, 

 tapering to the I)r()adly roimded end and without outer distal tootii; terminal 

 joint of the peduncle of the endopud somewhat thickened. 



The maxillulae (hg. 4a) witii the i)roximal lobe scarcely as broad as the 

 distal, which is about as broad as long, while the palp is \-er_\- slender and slightly- 

 longer than the outer margin of tlie distal lo!)e; a pseiide\o])o(i is not dex'eloped, 

 but the lobe of tiie first joint is somewhat ex]iande(l in the distal (hrection. — 

 The maxillae (fig. 4b) with the main jiart a lillle longer tiian broad: tiie palp 



