130 ME. T. SCOTT ON ENTOMOSTRACA 



posterior part of the abdoineu, exclusive of caudal stylets, is about half as long as the 

 genital segment, and the breadth less than half the length. A small sucker-like 

 appendage springs from each side of the median ventral line and at the posterior end of 

 the genital segment. Caudal stylets very short. 



Habitat. Loanda Harbour, in a surface tow-net gathering, during the afternoon of 

 February 15th. One specimen only obtained. 



The outline of the frontal plate, in this species, somewhat resembles an equilateral 

 triangle, from the aj)ical part of which a portion equal to about two fifths of the height 

 has been cut otf, while the sucker-disks are situated near the middle of what remains 

 of each side. The species is named in compliment to Dr. Murray of the ' Challenger ' 

 Expedition, who has done so much to foster and encourage the study of marine 

 zoology. 



Caligus bengoensis, n. sp. Provisional name. (PL XIV. fig. 20.) 



Length about 2*4 mm. Prontal plate about one fifth of the length of the cephalo- 

 thorax, narrower anteriorly. Sucker-disks forming almost a complete circle. The 

 length of the genital segment of the abdomen is about equal to one-and-one-third times 

 its breadth ; the following segment is shorter than broad, and in length equal to about 

 half the breadth of the genital segment ; the last abdominal segment is longer than the 

 preceding one, and about as broad as long. Caudal stylets half as long as the last 

 abdominal segment. The fourth pair of feet are moderately stout. 



Habitat. Loanda Harbour, in a surface tow-net gathering, but not the same as that in 

 which Caligus Murrayanus was obtained. 



Caligtjs DUBiiTS, n. sp. Provisional name. (PI. XIV. fig. 22.) 



'Female. Length 3"G mm. Porehead broadly rounded, sucker-disks comparatively 

 shallow. Cephalothorax equal to about four sevenths of the entire length of the animal. 

 The genital segment, which becomes wider towards the distal end, is about as long as 

 the remaining portion of the abdomen, including caudal stylets ; its breadth at the distal 

 end is equal to about three fourths the length, and the postero-lateral angles are rounded. 

 The remaining portion of the abdomen, the length of which is about equal to the 

 posterior end of the genital segment, is three times longer than broad ; no articulations 

 were observed in this part of the abdomen. The length of the caudal stylets is equal 

 to twice the breadth, and each is furnished with three moderately short plumose setse. 



Habitat. Loanda Harbour, in two surface tow-net gatherings, collected, one on the 

 13th and one on the 15th of February ; also in a surface tow-net gathering collected off 

 Appi, January 18th. 



NoGAGUS, Leach. 

 NoGAGUS vALiDUs, Dana. (PI. XIV. fig. 23.) 



1853. Nuyayus validus, Dana, Crust. Expl. Exped. p. 13G3, pi. xciv. fig. 9 a-h. 



