11 it COPEPODA. 



J\I K>OCHERES ANGLICUS, Norman & T. Scott. (PI?. X. fig. 18; 

 XL fig. 10 ; XII. fig. 13 ; XIII. fig. 13 ; XIV. fig. 11 ; 

 XIX. fig. 6 ; XX. fig. 8.) 



1905. Mesocheres anr/Iicnx, Norman & Scott, Ann. & Mag. Xat. Hist. 

 ser. 7, vol. xv. p. 298. 



Description of the female. Cephalothorax ovate, moder- 

 ately robust and widest in the middle, the width being equal 

 to rather more than half the length ; the first segment is 

 about one and a half times the entire length of the remaining 

 segments. The abdomen, which is narrow and elongated as 

 in Scottocheres, consists of three segments; the first is rather 

 longer than the combined lengths of the other two, it is 

 widest at the proximal end, and produced on each side into 

 a book-like process similar to the Scottocheres already men- 

 tioned ; the anal segment is the smallest one, being only a 

 little more than half the length of the preceding segment. 

 The furcal joints, which are long and slender, are about four 

 times as long as the last abdominal segment, and the outer 

 margin of each joint is fringed with minute cilia, the prin- 

 cipal apical setae are only moderately elongated (Y\. XIX. 

 fig. (\). The specimen represented by the figure measures 

 05 mm. (about -^ s of an inch). 



The antennules are composed of twenty-one joints, and 

 are similar in structure to those of Asterocheres Boecki ; a 

 moderately stout sensory filament springs from the distal end 

 of the eighteenth joint (PI. XII. fig. 13). 



The antennae are three-jointed ; the first is longer than 

 the next two joints taken together, the third joint is small 

 and bears one long and two short apical sette. Secondary 

 branch small, uuiarticulate, and furnished with one or two 

 slender apical bristles (PI. XIV. fig. 14). 



The mandibles and maxilla were damaged, and we are 

 therefore unable to describe their structure. 



The first maxillipeds consist each of a single short and 

 moderately stout basal joint, which bears an elongated stout 

 and strongly-curved terminal claw, while from near the ba?e 

 of the claw there springs a moderately long spine (PI. X. 

 fig. 18). 



The second maxillipeds are long and slender, and similar 

 in structure to the same appendages in Asterocheres Boecki 

 (PI XII I. fig. 13). 



The first four pairs of thoracic feet are somewhat similar 

 to those of the same Asterocheres, but their armature differs 

 to some extent, especially the armature of the fourth pair. 

 This pair is moderately stout, and the spines on the outer 

 fdi'e and apex of the outer branch, as well as the terminal 



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