IQI3-] S.Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 189 



The fourteen examples of this species in the Indian Museum were obtained at 

 the following localities : — 



^ Off Andaman Is., 20 fathoms. ' Investigator.' 2 <J , 4 2, n '5-18 mm. 



9850-3 off Little Andaman I., io| fathoms. 'Investigator.' 1 tf , 3 ? , 16-26 mm. 



s ^ 9 Off Table I., Coco group, Andamans, 9^ fms. ' Investigator.' 1 J 1 , 3 5 , 13-16-5 mm. 



The locality of Miers' type specimen of Gonodactylus excavatus is unknown. The 

 only other example which has hitherto been recorded was found on the Macclesfield 

 Bank, China Seas, in 24 fathoms (Pocock). 



[Gonodactylus folini, A. Milne-Edwards.] 



1868. Gonodactylus folinii, A. Milne-Edwards, Nouv. Arch. Mus- Hist. Nat., IV, p. 65, pi. xviii, 



figs. 8-11. 

 1886. Protosquilla jolinii, Brooks, Voy. H.M.S. ' Challenger,' XVI, Stomatop., p. 70. 

 1886. Protosquilla elongata, Brooks, ibid., p. 67, pi. xv, figs. 2, 12 ; pi. xvi, fig. 4. 

 1895. Gonodactylus folinii, Hansen, Isop., Cumac. u. Stomatop. Plankton- Bxped. , p. 86. 

 Gonodactylus folini is known only from the Atlantic, in the vicinity of the Cape 

 Verde Is. Hansen has re-examined the specimen which Miers (1880 (a), p. 123) recorded 

 from Mauritius and remarks that it is in reality an example of Gonodactylus ectypus, 

 Müller. The species has in consequence no place in a list of Indo-pacific species. 



G. folini is allied to G. excavatus, but the distal excavation of the telson is not so 

 deep and bears setae, but no denticles, on its edges. Moreover, the two apical teeth, 

 which are found in the preceding species on either side of the excavation, are replaced 

 in the Atlantic form by three blunt lobes. 



22. Gonodactylus brooksi (de Man). 



1887. Protosquilla brooksii, de Man, Arch. f. Naturgesch., LIU, i, p. 579, pi. xxii a, fig. 8. 

 1910. Protosquilla brooksii, Fukuda, Annot. Zool. Japon., VII, p. 140, pi. iv, figs. 1, la. 



In the possession of a wide and deep median excavation in the distal margin of 

 the telson G. brooksi and the three succeeding species resemble G. excavatus and folini ; 

 they are, however, readily distinguished by the presence of stout spinules or long spines 

 on the dorsal aspect of the telson. 



The carapace, in G. brooksi, is a little longer than broad ; it is rather wider behind 

 than in front, and the antero-lateral angles are rectangularly rounded. The median 

 of the three rostral spines is very long, reaching to or beyond the anterior extremity 

 of the eyes, while those of the lateral pair are much shorter, and extend obliquely for- 

 wards to the base of the eyestalks. The proximal undivided portion of the rostrum 

 is exceedingly stout. The eyes are slightly flattened dorso-ventrally ; the cornea is a 

 little wider than the stalk, and is set transversely on it. 



The first four abdominal somites are laterally carinate as in the preceding species, 

 but are quite smooth dorsally. The postero-lateral angles of the first three segments 

 are rectangularly rounded; those of the fourth are pointed, while those of the fifth are 

 sharply spinous. The median portion of the fifth somite is smooth in front, but poste- 

 riorly bears four longitudinal depressions, often constricted in the middle, and evidently 



