34 MH. L. A. BOEEADAILE ON CETTSTACEAlfS [Jail. 18, 



2. Peotosquilla teispinosa (Dana). (Plate Y. figs. 1, la.) 



Oonodactylus trisphiosus, Dana, Zool. U.S. Expl. Exped., Crust, 

 i. p. 623 (1852) ; Miers, A.un. Mag. Nat. Hist. 5, v. p. 121, 

 pi. iii. fig. 10(1880). 



Protosquilla trisinnosa, Brooks, ' Challenger ' Stoinatopoda, p. 71 

 (1886). 



The naming of this species is generally credited to White (List 

 Crust. Brit. Mus. p. 75, 1847), but, as" White published merely 

 the name and a reference to a plate (in the " Zoology of the Voyage 

 of the ' Erebus ' and ' Terror ' ") which never appeared, the true 

 author is Dana, who was the first to describe it. 



No complete figure of /-'. irispinosa has ever been published, and 

 as the representation of the telsou given by Miers does not accurately 

 depict either White's original specimen in the British Museum 

 or that in Dr. AVilley's collection, which themselves agree 

 closely, I have determined to append a figure to the present note. 



All descriptions of this species hitherto published have over- 

 looked the fact that the three tubercles of the telson are not 

 smooth, but covered with miuute spinules. An amended definition 

 of the species will run as follows : — 



" A Protosquilla ^^ith the two antero-lateral spines of the ros- 

 trum nearly as long as the median ; carapace with corners nearly 

 rectangular, anterior more acute than posterior ; fifth abdominal 

 segment longitudinally corrugated ; sixth abdominal segment 

 clearly marked off from the telsou, and bearing six smooth tubercles ; 

 telson bearing a median and two lateral large tubercles coAered 

 with minute spinules, the median anterior to the two laterals ; 

 postei-ior border of telson divided by deep narrow fissures into six 

 lobes ; submedian, intermediate, and lateral spines of the telson 

 small and placed in notches ; several submedian spinules." Length 

 about 40 mm. 1 5 specimen from Lifu, Loyalty Islands. 



3. GoNODACT¥LUS CHiEAGEA (Fabr.). (Plates V. fig. 4, & A^I. 

 fig. 8.) 



Squilla chiragra, Fabricius, Ent. Syst. t. iii. pt. i. p. 513 (1793). 



Gonodactylus cliiragra, Latreille, Eucycl. Meth. x. p. 473 (1825); 

 Dana, Zooh U.S. Expl. Exped., Crust, i. p. 623, pi. xli. figs. 5 a, 6 

 (1852); Miers, Ann. Mag. Nat. Hist. 5, v. p. 118(1880); Brooks, 

 ' Challenger' Stomatopoda, p. 56, pi. xv. fig. 4 (1886). 



Gonodactylus smithii, Pocock, Ann. Mag. Nat. Hist. 6, xi. p. 475, 

 pi. XX. B. fig. 1 (1893). 



Pocock has described, under the name of Gonodactylus sniithii 

 (Plate Y. figs. 2, 2 a, b), a form differing from the type as follows : — 



(i.) The crests upon the sixth abdominal segment and telson 

 are much more compressed and carinate than in chiragra. 



(ii.) The crests upon the sixth abdominal segment are produced, 

 without constriction, into long spines. 



