2ÓO 



g , Species not exceeding 48 mm. ia length. Abdomen 



3-times as long as carapace. Anterior gastric spine 



considerably smaller than posterior. . . . occidentalis Faxon var. iudica de Man 



(., Peraeopods of the first pair vvith the outer margin of the 



merus armed with a spine Challcngeri Ortm. ^ 



(Pontophilus gracilis C. Spence Bate, Report Challenger Macrura, 1888, 

 p. 4S7, PI. 87 ; Pontophilus challcngeri A. Ortraann, Decapoden und 

 Schizopoden der Plankton-Expedition, Bd. II. G. b., Kiel und Leipzig, 

 1893, p. 49.) 



^d i On either side of the mid-dorsal line a row of minute 



spines terminating in one principal tooth. One spine on 



each hepatic region. Rostrum short, rounded at apex, 



narrowed, concave above Pattersonii (Kinahan) 



(J. R. KlNAMAN, Proc. Royal Irish Acad. Vol. VIII, Part 1. Dublin 1862, 

 p. 4, 8. PI. V.) 



■^ c 2 Mid-dorsal line of carapace with tvvo spines. 

 d { Carapace with six lateral spines. 

 e x Mid-dorsal spines of carapace placed close together on 

 the anterior third. Antennal scale a trifle more than 



twice as long as wide australis (Hutton) G. M. Thomson 



(G. M. THOMSON, On the New Zealand Phyllobranchiate Crustacea- 

 Macrura. London 1903, p. 434, PI. 27, figs. 1 — 5.) 



e„ Mid-dorsal spines of carapace widely separate, posterior 



spine placed exactly on the middle of the carapace. 



Antennal scale considerably less than twice as long 



as wide Chiltoui Kemp 



(Stanley Kemp, Records Indian Museum, Vol. VI, Part i,Calcutta 191 1, 

 p. s, PI. II, figs. 6—10.) 



d 3 Carapace with three lateral spines : two are placed on the 



first or upper one of the three lateral keels, the third 



spine on the lower, while the second or middle keel is 



unarmed. Rostrum truncate bidentattis (de Haan) 



(W. de Haan, Fauna Japonica. Crustacea, 1849, p. 183, PI. XLV, fig. 14.) 

 ^d % Carapace with two lateral spines. 

 Rostrum acute, slender. 



e x Rostrum without lateral teeth junccus Bate 



(C. Spence Bate, 1. c, p. 491, PI. 88, figs. 2— 4.) 



w., Rostrum with one lateral tooth on each side. Spines of 



the lateral faces of carapace in an oblique plane . . gracilis S. I. Smith 

 (S. I. Smith, 1. c, 1882, p. 36, PI. VII, figs. 2 — ia.) 



e % Rostrum with two lateral teeth on each side. Spines of 



the lateral faces of carapace in the same level . . . profundzis Bate 

 (C. Spence Bate, 1. c, 18S8, p. 490, PI. 88, fig. 1.) 

 d l Carapace with one spine on each side. 



