OSTEOLOGY. 39 



The pelvic girdle (Plate 8, figs. 1, 2) is luueli like that of Erinaceus in its 

 Ijruportions. The pubis is well developed, with a lateral crest for the attach- 

 ment of muscles, and quite without the inward arching of the anterior rim so 

 peculiarly developed in Gymnura. The symphysis is about 4 mm. long yet 

 firm, as in Erinaceus. In (iymnura it is incomplete. The obturator foramen is 

 large and subcjuadrate in outline. The ischial tuberosities are about as far 

 apart as are those of tlie ilia. In absolute size the pelvis of Solenodon paradoxus 

 is practically identical with that of S. cubamis. Leche (:07, p. 83, text fig. 77) 

 has given a figiu-e and description of what he believed to l)e "das bisher unbe- 

 kannte Becken von Sol. paradoxus," but there can be no doubt that the bones 

 figured (a ix'lvis, with sacral and four caudal vertebrae) are not those of Soleno- 

 don at all. The figiu-es re])reseat a pelvis larger than that of this genus, with a 

 long symphysis pubis, oval obturator foramen, evenly rounded iscliia, and caudal 

 vertebrae of a totally different character from those founil in Solenodon. Doubt- 

 less the mistake arose through some transposition nf labels, for Leche himself 

 remarks upon the astonishing characters that the specimen presents, quite 

 different from those of all other "Insectivora lipotyphla." 



The scapula (Plate 8, figs. 5, 7, 8) is subtriangular in outline, with a greater 

 relative development of the coracoid margin than in Erinaceus. The scapula 

 spine is broad and shelf-like but tlie acromion and metacromion are shorter 

 than in Erinaceus and Gjnmura, and in this respect resemble these processes in 

 Centetes. 



The humerus (Plate 8, figs. 9-11) is short and is remarkable for its great 

 expansion distally, on each side of the articulation. The epitrochlear foramen is 

 present as in Gymnura, Centetes, and Ericulus. This foramen is absent in 

 Erinaceus. In the specimen of Gymnura examined, the olecranal fossa is per- 

 forate, but no such perforation was found in Solenodon, Ericulus, or Erinaceus, 

 and it apparently does not exist in Centetes. The extreme length of the humerus 

 is 49 mm. or about 5 mm. longer than that of .S'. cubanus; its least breadth is 

 5 mm. at about the commencement of the distal third of its length. The great- 

 est distal expansion is 1 8.5 mm., of which the articulating surface occupies 7 nmi. 



The radius and ulna (Plate 8, fig. 15) are separate and practically as in the 

 Cuban Solenodon. The former is narrow proximally with a distinct neck about 

 5 mm. from the articulation. Distally it is expanded and articulates with the 

 radiale and the intermedium of the carpus. Its ectal face has a shallow longi- 

 tudinal groove along the distal three fourths. Its extreme length is 41.5 mm., 

 or about 5 mm. greater than the measurement of the same bone in Peters's 



