464 ME. p. W. BASSETT-SMITH OS [-^-pr. 18, 



G. 19. ECHTHEO&ALEUS Stp. & Lutk. 



Carapace as in Dinematura. Dorsal plates of last thoracic ring 

 proportionally larger ; no median processes posteriorly to genital 

 segment; abdomen and caudal plates not projecting. Thoracic 

 limbs as in the preceding genus, except that the inner branch of 

 the second and third pairs has only two joints instead of three. 



(1) ECHTHEOGALEUS COLEOPTEATUS. S $ . 



Dinemoura coleoptratus Gruerin, Icon. d. Reg. animal, iii. 1817, 

 pi. xxsv. fig. 6. 



Pandarus alatus Johnst. Loud. Mag. Nat. Hist. viii. 1836, p. 202. 



Dinemoura alata M.-E. Hist. Nat. Crust, iii. 1840, p. 464. 



„ „ Baird, British Entom. 1850, p. 285, pi. xxxiii. 



fig. 8. 



Nogagus ? S . 



Echihrogaleus coleoptratus Stp. & Liitk. Bidrag til Kundskab, 

 1861, p. 380, pi. viii. fig. 15. 



In Coll. Brit. Mus. 



Host : Lamna cornuhica. 



(2) ECHTHEOGALEUS NEO-ZBALANICUS. $ . 



Dinematura neozealanica Thomson, Trans. N. Z. Inst. 1839, 

 vol. xxii. p. 359, pi. xxv. fig. 2. 

 Host : " Shark." New Zealand. 



(3) ECHTHEOGALEUS AEEINIS. $ S • 



Dinemoura affinis M.-E. Hist. Nat. Crust, iii. 1840, p. 465, 

 pi. xxxviii. fig. 15. 

 „ „ Stp. & Liitk. Bidrag til Kundskab, 1861, 



p. 382. 

 Dinematura hraccata Dana, U.S. Expl. Exp., Crust, ii. 1848, 

 p. 1370, pi. 95. fig. 4. 



Nogagus hraccata cJ , Heller, Eeise d. Novara, 1865, p. 197, 

 pi. XX. fig. 3. 



In Coll. Brit. Mus. 



Host : Leptocarcharias sp. New Zealand and Tongatabu. 



(4) ECHTHEOGALEUS INDISTINOTUS. ^ . 



Dinematura indistincta Kr. Bidrag til Kundskab, 1863, p. 183. 

 Host : — ? Valparaiso. 



Division ii. Pandarina;. — All the limbs provided with hook-like 

 appendages, or with the edges quite smooth. 



Gr. 20. Ceceops Leach. 



Carapace oval, robust, deeply notched iu front. Anterior antennae 

 small, hidden. Last thoracic segment with a pair of short dorsal 

 plates. Genital segment as long as cephalothorax. Abdomen small. 

 Caudal plates minute. All the thoracic limbs biramose, increasing 



