Development of the Pectoral Girdle in the Pipefish. 613 



lack the black hairs found at the bases of the nails in the 

 typical " hirtuhi." 



Dimensions of the type (measured in the flesh) : — 



Head and body 256 mm. ; tail 193 mm. ; hind foot 

 44 mm. ; ear 27 mm. 



Skull : condylo-basal length 54"5 mm. ; zygomatic 

 breadth 31 mm.; interorbital breadth 12 ram. ; breadth of 

 brain-case 23 mm. ; front of canine to back of m^ 19 mm. 



Hub. Eil llur, near Obbia, Italian Somaliland. 



Ti/pe. Adult male. Original number 595. Collected by 

 me Jan. 1912 and presented to the British Museum. 



I was fortunate in obtaining two other specimens of this 

 mongoose at Gharabwein, a day^s march distant from Eil 

 Hur, and they both possess the same distinctive pale 

 coloration. It gives me much pleasure in naming this 

 mongoose after my friend Mr. H. T. Powell, Treasurer of 

 the Somaliland Protectorate. 



LXXVl. — On the Development of the Pectoral Girdle in the 

 Pipefish (Synguathus acus) . By T. P. Buist, M.A., B.Sc, 

 Gatty Marine Laboratory, University of St. Andrews. 



[Plate XIII.] 



The most important contribution to the study of the anatomy 

 of the Lophobranchs is undoubtedly Professor Jungersen^s 

 recent paper *, including as it does both an exhaustive 

 account of the comparative anatomy of the group, prepared 

 from his own investigations and illustrated with a large 

 number of exceedingly clear and accurate figures, and a 

 critical review of the previous literature, bringing the whole 

 subject completely up to date. . Jungersen gives a full and 

 accurate description of the pectoral girdle of the adult pipe- 

 flsh, and also records the less perfect descriptions of earlier 

 writers. This renders it unnecessary to do more here than 

 mention a few points which are of importance in relation to 

 the special purpose of this paper. 



Superticial in position the pectoral girdle in the pipefish 

 enters into intimate relations with the adjoining plates of 

 the dermal armature, and diflers greatly from that of other 



* H. F. E. Jung-ersen, " Ichthyotomical Contributions. — II. The 

 Structiu-e of the Aulostomidae, Svngnathidse, and Soleuostomidae," D. Kgl. 

 Danske Vid. Selsk. Skrifter, 7 K^kke, Nat. og Math. Md. viii, 5 (1910). 



