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No. XIII—STOMATOPODA FROM THE WESTERN INDIAN OCEAN. 
By L. A. Borravat.e, WA., Lecturer in Natural Sciences at 
Selwyn College, Cambridge. 
(Communicated by J. Stantny Garviner, M.A., F.L.S.) 
(Plate 22.) 
tead 20th June, 1907. 
Tux two collections on which this paper is based were made respectively by Mr. Stanley 
Gardiner’s expedition in 1905 at various localities between the Maldives and Madagascar, 
and by Mr. C. Crossland in 1902 in Zanzibar and British East Africa. Together they 
comprise 15 species of adult forms, belonging to 5 genera, and 11 species of larvie, 
belonging to 6 genera. Two species of adult forms and as many iarve are new. All 
the remaining species have already been recorded from various parts of the Indo-Pacific 
region. 
The extensive material, together with the collection in the Cambridge Museum of 
Zoology, has enabled several specific and varietal questions of difficulty to be solved, 
and some of the larvze contribute to the completion of the life-histories of their species. 
The following is a list of the adult forms in the collection :— 
Genus PROTOSQUILLA, Brooks, 1886. 
1. Protosquilla pulchella (Miers), 1880. 
Gonodactylus trispinosus var. pulchellus, Miers, Aun. Mag. Nat. Hist. (5) v. p. 122 (1880). 
Protosquilla trispinosa var. pulchella, de Man, Abh. Senck. Ges. xxv. 111. p. 920. 
This species has the following constant differences from P. tvispinosa :— 
i, The middle of the fifth abdominal tergite is smooth, not ridged. 
ii. The flat part of the telson, around the three mounds, is both longer and wider 
than in P. trispinosa. 
ii. This field around the mounds is not grooved but pitted. 
Specimens from Zanzibar and Wasin, British East Africa. 
2. Protosquilla tuberculata, sp. nov. (Plate 22. fig. 1.) 
Diagnosis—A Protosquilla with the angles of the rostrum sharp but hardly forming 
spines, its middle spine almost reaching the cornea of the eyes; the free thoracic and 
first five abdominal terga smooth, without spines at their angles; the sixth abdominal 
segment bearing four low mounds, on each of which are three or fowr sharp knobs, 
as well as a ridge on each edge ending in a spine; and the telson with four teeth at its 
hinder end, of which the middle two are rather larger than the outer and all are edged 
SECOND SERIES.—ZOOLOGY, VOL. XII. 30 
