MARINE CRUSTACEANS. 457 



2. Pseudo-squilla ciliata. Miers. 



Miers, Ann. Mag. Nat. Hist. (5) v. p. 108, PI. III. Fig.s. 7—8 (1880). 



$ , Minikoi, " Obtained by breaking np a coral mass from the outer reef," and a young 

 form, Suvadiva Atoll, 30/'. (fathoms). 



In the young specimen the submedian carinae on the telson, which are small in the 

 adult, are quite absent. In describing the thoracic segments Miers says, " 2nd thoracic 

 segment... laterally sub-truncated, 3rd more rounded laterally." I think there must be a .slip 

 here on Miers' part, the arrangement in these specimens being just the reverse. 



II. LARVAL FORMS. 



3. A lima hidens Glaus. 



Glaus, Ahh. d. kon. Ges. Wiss. GMingen, p. 152, PI. VIII. Fig. 34 (1872); Brooks, 

 'Ghallenger' Stomatopoda, p. 90, PI. IX. Figs. 1—2 (1886). 



A single example from Suvadiva Atoll, Maldive Is., SOf. 



In this specimen, which is 25'5 mm. long and therefore of the same size as the older of 

 Brooks' two specimens, the three teeth (besides the terminal one) on the dactyl of the 

 raptorial claw are represented by only the merest rudiments under the skin, and there is 

 only one spine on the inner edge of the postero-lateral spine, as opposed to three in Glaus', 

 and two in Brooks' specimens ; the spines on the postero-lateral angles of the abdominal 

 segments are, however, well-developed. 



4. Alinierichthus pyramidalis sp. n. 



Cp. Glaus, Alinierichthus, sp. Ahh. d. kon. Ges. Wiss. Gottingen, p. 147, PL VIII. Fig. 

 30 (1872); and Brooks, 'Ghallenger' Stomatopoda, p. 97 (1886). 



Of this species there is one example in the collection. This, which is from the North 

 Male Atoll, is 17 mm. in length and thus corresponds in size with Glaus' example, with 

 which, moreover, it corresponds closely in other structural details; there are, however, 

 indications of only 5 (or possibly 6) spines on the dactyl of the raptorial claw, and 5 spines 

 only on the exopodite of the uropod. As points which have not been described before, I may 

 mention that all the abdominal segments bear spines on their postero-lateral angles, while 

 the 6th abdominal segment bears a pair of submedian spines. Also the dorsal spine rises 

 from a pyramidal elevation of the carapace, the angles of which p3rramid form carinae, not 

 shaqj but rounded, which are continued, one along the mid-dorsum to the rosti'um, the other 

 two along the posterior border of the carapace to the postero-lateral spines, the posterior 

 border beinff bent downwards behind these two carinae. 



o 



Glaus makes no mention, in his descrijJtion of this species, of spines on the postero-lateral 

 angles of the abdominal segments, and the point cannot be decided from his figure. Brooks, 

 however, says on p. 98 of his work, " In the true Aliinae the postero-lateral angles of the 

 abdominal somites end in acute spines, which are not developed in Alimerichthus." This 

 I believe to be an error; firstly, because inspection of his figure 3 on PI. IX. reveals the 

 presence of such spines on at least the 3rd — 5th segments ; secondly, because the present 

 specimen, which has such spines, agrees so closely with the one dealt with by Glaus as to 



